CN107332634A - Audio Matrix main frame and its method of work, Public Address system and its method of work - Google Patents

Audio Matrix main frame and its method of work, Public Address system and its method of work Download PDF

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Publication number
CN107332634A
CN107332634A CN201710694634.5A CN201710694634A CN107332634A CN 107332634 A CN107332634 A CN 107332634A CN 201710694634 A CN201710694634 A CN 201710694634A CN 107332634 A CN107332634 A CN 107332634A
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audio
cpu
audio signal
signal
controller
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CN107332634B (en
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罗志锋
黄文裕
邝庭超
黄健恒
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Guangzhou Ddt Long Jian Electronics Co Ltd
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Guangzhou Ddt Long Jian Electronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/268—Signal distribution or switching

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Alarm Systems (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

The invention discloses Audio Matrix main frame, Public Address system and both method of works, Audio Matrix main frame includes CPU and the digital audio media matrix, microphone controller, fire protection warning device, fire-fighting link device, trigger controller and the external source of sound that are connected respectively with CPU；CPU is received after microphone controller, fire protection warning device, external source of sound, the audio signal of trigger controller, knows the whereabouts of each road audio signal, and Ji Ge roads audio signal to be distributed audio zone extremely；Each audio zone is directed to, comparing will distribute to the priority of each road audio signal of same audio zone, then controls digital audio media matrix to distribute to the audio signal of the highest priority of same audio zone and be output to correspondence audio zone.Public Address system of the present invention includes multiple Audio Matrix main frames, and the CPU level of each Audio Matrix main frame joins.The present invention has the advantages that simple in construction, the connection without carrying out complexity, saves installing space and use cost.

Description

Audio Matrix main frame and its method of work, Public Address system and its method of work
Technical field
The present invention relates to a kind of broadcast system, more particularly to a kind of Public Address system and Audio Matrix main frame.
Background technology
Continuous progressive and science and technology with the epoch develops rapidly, the functional requirement of modern architecture and original building There is obvious difference, the high speed development of light current technology is particularly built, by electronic technology, mechanics of communication, network technology, calculating The serial state-of-the-art technology such as machine technology, automatic control technology, sensor technology is introduced, and the service function of building is carried significantly Height, comprehensive stronger, the field being related to is wider.Public broadcasting is as a part of weak electricity system, and be closely connected people The modern life, it can play music, and service propaganda and paging broadcast can be done again, moreover it is possible to be used as the urgent wide of fire incident Broadcast, be a kind of extremely strong broadcast system of property agreed to, be widely used in cell, market, hotel, office cell, airport, harbour, station It is the modern life and indispensable part in work Deng place.
The broadcast products of at present on the market are broadly divided into two major classes, and a class is classified as analog broadcast system, another kind of for number Word broadcast system is network IP broadcast, and traditional analog broadcasting product is constituting multiple sound resource broadcasting, multiple functional broadcast system, Required structural device product is excessively various, and the installing space requirement of system is larger, allows user to use invisible increasing The demand of cost is added, has been connected in the composition of system on due to needing multiple devices to cross machine, cause the audio transmission of system Poor anti jamming capability, it is impossible to expand more broadcast audio areas.
The content of the invention
The first object of the present invention is the shortcoming and deficiency for overcoming prior art there is provided a kind of Audio Matrix main frame, should Audio Matrix main frame have the advantages that it is simple in construction, powerful, constitute multiple sound resource play, multiple functional broadcast system When, without carrying out complicated connection, save installing space and use cost.
The second object of the present invention is to provide the method for work that a kind of above-mentioned Audio Matrix main frame is constituted.
The third object of the present invention is to provide a kind of Public Address system being made up of above-mentioned Audio Matrix main frame, the public affairs Broadcast system can be expanded into more broadcast audio areas altogether, and have the advantages that strong antijamming capability.
The fourth object of the present invention is to provide a kind of method of work of above-mentioned Public Address system.
The first object of the present invention is achieved through the following technical solutions：A kind of Audio Matrix main frame, including CPU, digital sound Frequency mediamatrix, microphone controller, fire protection warning device, fire-fighting link device and trigger controller；
The microphone controller is provided with multiple microphone audio input ports, and the microphone controller connects CPU, by microphone The audio signal of controller audio input port input is sent to CPU；
The fire protection warning device connects the first storage card of the audio signal for the fire alarm that is stored with；The fire protection warning device connection CPU, controls fire protection warning device to read audio signal from the first storage card, and the audio signal of reading is transmitted by CPU To CPU；
The fire-fighting link device is provided with multiple fire alarm trigger signal input ports, and the fire-fighting link device connects CPU, will The fire alarm trigger signal received is sent to CPU, and CPU controls fire protection warning device from first when receiving fire alarm trigger signal The audio signal of fire alarm is read in storage card；
The trigger controller connect band does the external timer source of sound of triggering, and the trigger controller connects CPU, CPU receives the doing after trigger signal of external timer source of sound by trigger controller, receives external by trigger controller The audio signal that timer source of sound is sent；
The CPU is provided with multiple external audio input ports, connects external source of sound by external audio input port, connects Receive the audio signal that external source of sound is sent；
The CPU connections digital audio media matrix, is being received from microphone controller, fire protection warning device, external sound After source, the audio signal of trigger controller, the whereabouts of each road audio signal is known, Ji Ge roads audio signal to be distributed sound extremely Frequency area；Each audio zone is directed to simultaneously, comparing will distribute to the priority of each road audio signal of same audio zone, then control Digital audio media matrix will distribute to the audio signal of the highest priority of same audio zone and be output to correspondence audio zone.
It is preferred that, the trigger controller connects external fire alarm source of sound, and CPU is receiving the fire alarm of fire-fighting link device transmission During trigger signal, the audio signal that external fire alarm source of sound is sent is got by trigger controller, while passing through trigger controller Fire alarm trigger signal is sent to outside；The CPU is connected with cuts controller by force, is needed when connecting fire alarm generation by cutting controller by force Equipment out of service is wanted, when CPU receives the fire alarm trigger signal of fire-fighting link device transmission, sends a control signal to and cuts by force Controller, needs equipment out of service out of service when controlling fire alarm to occur by cutting controller by force；
The CPU is connected with the first touch-screen.
It is preferred that, the microphone controller connects each microphone work station by each microphone audio input port thereon；
The microphone work station includes microphone, the first controller, the first digital control audio processing chip and second and touched Touch screen, the audio signal output end of the words microphone connects the input of the first digital control audio processing chip, described the The output end of one digital control audio processing chip connects the microphone audio input port of microphone controller；The first numeral control Audio processing chip processed connects the first controller, and the gain of the first digital control audio processing chip is directed to by the first controller It is adjusted with audio；First controller connects CPU, and second touch-screen connects the first controller.
It is preferred that, in addition to remote controllers, the remote controllers are provided with multiple remote audio signal input ports With multiple remote audio signal output ports；The remote controllers are connected by each remote audio signal input port thereon Each remote control panel of each audio zone is arranged on, the audio signal for receiving remote control panel transmission；The long-range control Device processed connects CPU, the audio for receiving it from each remote control panel by each remote audio signal output port thereon Signal sends CPU to；In the remote controllers, a remote audio signal is shared per several remote audio signal input ports Output port, wherein each remote audio signal input port that connection belongs to same audio zone remote control panel shares one far Journey Audio output port, i.e., the remote control panel of same audio zone, which is sent to the audio signal of remote controllers, to be passed through Same remote audio signal output port in remote controllers is output in CPU, and CPU receives remote controllers transmission After audio signal, send to digital audio media matrix, then according to the two priority classes digital audio media of the audio signal The corresponding audio signal of Output matrix is to each audio zone；
Each remote control panel include second controller, local audio source, the second digital control audio processing chip and 3rd touch-screen；The second controller connects CPU, and the 3rd touch-screen connects second controller；
The second controller connects local audio source, for the audio signal for selecting local audio source to export；Described The input connection local audio source of two digital control audio processing chips, output end connects remote controllers by signal wire One of remote audio signal input port；The second controller connects the second digital control audio processing chip, is used for Second digital control audio processing chip gain and the regulation of audio.
Further, the digital audio media matrix includes 28 audio signal input ends, wherein, the 1st to 8 sound Frequency signal input part input microphone controller is sent to CPU 8 tunnel audio signals, the 9th to 16 audio signal input end input 8 Individual external source of sound is sent to CPU 8 tunnel audio signals, and the 17th audio signal input end input fire protection warning device is sent to CPU Audio signal, the 18th audio signal input end input trigger controller, which is sent to CPU from external timer source of sound, to be received The audio signal arrived, the 19th audio signal input end input trigger controller sends to CPU from external fire alarm source of sound and received The audio signal arrived；20th audio signal input end input is read to CPU audio letter from the second storage card or outside USB flash disk Number；The audio signal of 21st to 28 audio signal input end input 8 remote audio signal output end output of remote controllers；
The digital audio media matrix includes first selector, second selector and third selector, described first Selector is that No. 20 selectors are selected on 40 tunnels, and the second selector is that No. 8 selectors are selected on 28 tunnels, and the third selector is 36 tunnels Select No. 1 selector；
1st to 20 audio signal input end of the digital audio media matrix passes through each 3rd digital control sound respectively Frequency process chip connects 20 inputs of first selector；20 output ends correspondence connection second of the first selector is selected Wherein 20 inputs of device are selected, the wherein 8 inputs correspondence input of second selector is inputted to CPU's by remote controllers 8 tunnel audio signals；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audio processing chips, 8 the 4th digital control audio processing chips are connected respectively the loudspeaker front-end power amplifier of 8 audio zones；Described 20 output ends of the wherein 20 inputs correspondence connection first selector of three selectors, wherein 8 of third selector are defeated Enter end correspondence input to be inputted to CPU 8 tunnel audio signals by remote controllers, wherein 8 inputs of third selector are distinguished The output end of correspondence 8 the 4th digital control audio processing chips of connection, the output end of third selector is put by digital power Big device connects local loudspeaker, and monitor function is realized by local loudspeaker；
The first selector, second selector and third selector address end connect CPU respectively, and CPU is according to the first choosing Select the priority of device, second selector and each input audio signal of third selector, control first selector, second selector and Third selector output end exports corresponding audio signal；
CPU is all connected with each 4th digital control audio processing chip on each 3rd digital control audio processing chip, is led to Cross the gain on each 3rd digital control audio processing chip of CPU regulations with each 4th digital control audio processing chip and sound Effect.
The second object of the present invention is achieved through the following technical solutions：A kind of method of work of above-mentioned Audio Matrix main frame, Step is as follows：
According to the source of each road audio signal, input is set in CPU to the priority of wherein each road audio signal；
When microphone controller receives audio signal, audio signal is sent to CPU；
When firefighting warning linkage device receives fire alarm trigger signal, fire alarm trigger signal is sent to CPU, CPU and connect When receiving fire protection warning trigger signal, control fire protection warning device reads the audio signal of fire alarm, fire-fighting report from the first storage card Alert device is read after the audio signal of fire alarm from the first storage card, and audio signal is sent into CPU；
After trigger controller, which receives band, does the timing pip of external timer source of sound of triggering, CPU passes through Trigger controller reads audio signal from external timer source of sound；
CPU knows the whereabouts of each road audio signal after each road audio signal is received, and Ji Ge roads audio signal to be divided The audio zone being assigned to；Each audio zone is directed to simultaneously, comparing will distribute to the priority of each road audio signal of same audio zone； Then control digital audio media matrix will distribute to the audio signal of the highest priority of same audio zone and be output to diaphone Frequency area.
Preferential, it is further comprising the steps of：
Microphone work station sends audio zone by the first controller and distributes control instruction to CPU, and CPU receives above-mentioned control After instruction, judge distribution to correspondence audio zone audio signal in, microphone work station output audio signal priority whether be Highest, if so, then control digital audio media matrix sends the audio signal that microphone work station is exported to correspondence audio zone；
Gain and audio of the microphone work station by the first controller to the first digital control audio processing chip are adjusted Section, is sent to the volume of CPU audio signal and audio with adjusting microphone work station；
Microphone work station sends master volume Regulate signal and keynote by the first controller imitates Regulate signal and connects to CPU, CPU After the master volume Regulate signal and keynote effect Regulate signal that receive the transmission of the controller of microphone work station first, pass through DAB matchmaker Volume matrix is adjusted to exporting to the volume of the audio signal of respective audio area loudspeaker and audio；
The remote control panel of each audio zone selects the audio signal that local audio source is exported by second controller, locally The audio signal of audio-source output is output to remote controllers after the second digital control audio processing chip, then by long-range Controller is sent to CPU；If now, in the audio signal of audio zone where distribution to remote control panel, remote control panel Local audio source output audio signal priority be highest, then CPU control digital audio media matrix the audio is believed Number output to audio zone where the remote control panel loudspeaker；
Remote control panel sends external source of sound selection signal to CPU by second controller, and CPU receives the second control After the external source of sound selection signal that device is sent, in the audio signal of audio zone where judging distribution to remote control panel, correspondence Whether the priority of the audio signal of external source of sound output is highest, if so, then control digital audio media matrix will be corresponding outer The audio signal for putting source of sound is exported to the loudspeaker of audio zone where the remote control panel；
Gain and audio of the remote control panel by second controller to the second digital control audio processing chip are carried out Regulation, is sent to the volume of CPU audio signal and audio with adjusting local audio source in remote control panel；
Remote control panel sends master volume Regulate signal by second controller and keynote imitates Regulate signal to CPU, CPU After the master volume Regulate signal and keynote effect Regulate signal that receive the transmission of remote control panel second controller, the digital sound of control The volume and audio that export to the audio signal of audio zone loudspeaker where remote control panel are adjusted frequency mediamatrix；
The external equipment connected by CPU port directly triggers CPU and controls digital audio media matrix to exporting to each The volume and audio of the audio signal of audio zone loudspeaker are adjusted；The external equipment connected by cpu port triggers CPU pairs The source of sound of each audio zone is selected；
Wherein when firefighting warning linkage device receives fire alarm trigger signal, fire alarm trigger signal is sent to CPU, CPU When receiving fire protection warning trigger signal, control fire protection warning device reads the audio signal of fire alarm from the first storage card, disappears Anti- alarm is read after the audio signal of fire alarm from the first storage card, and audio signal is sent into CPU；Or CPU is connecing When receiving the fire alarm trigger signal of fire-fighting link device transmission, the audio that external fire alarm source of sound is sent is got by trigger controller Signal, while sending fire alarm trigger signal to outside by trigger controller.
Further, the CPU receives 28 tunnel audio signals, and the source of each road audio signal is as follows：Wherein the 1st to 8 8 microphone work stations that road audio signal is connected from microphone controller, the 9th to 16 tunnel audio signal is from 8 external sounds Source, the 17th tunnel audio signal comes from fire protection warning device, the external timing that the 18th tunnel audio signal is connected from trigger controller Device source of sound, the external fire alarm source of sound that the 19th tunnel audio signal is connected from trigger controller, the 20th tunnel audio signal comes from CPU The second storage card or outside USB flash disk connected, 8 audio zones that the 21st to 28 tunnel audio signal is connected from remote controllers Remote control panel；
Wherein 1 or several microphone work stations are as artificial urgent broadcast work station in 8 microphone work stations, if being left Cylinder work station is common broadcast work station, and the audio signal priority level initializing of artificial urgent broadcast work station output is highest；Come The priority level initializing of the 17th tunnel audio signal from the external tunnel audio signal of fire alarm source of sound the 19th or from fire protection warning device is second； The priority level initializing of the audio signal of common broadcast work station output is the 3rd；Come the 18th tunnel of the external timer source of sound of self-timing The priority level initializing of audio signal is the 4th；21st to 28 tunnel audio signal of the remote control panel from 8 audio zones Priority level initializing is the 5th；The priority level initializing of the 9th to the 16 tunnel audio signal from external timer source of sound is the 6th；Come from The priority level initializing of 20th tunnel audio signal of the second storage card or outside USB flash disk is the 7th；Wherein priority be in the 3rd it is several There is certain priority in road audio signal；The 3rd is in when the audio signal of distribution to certain audio zone includes priority During multipath audio signal, now CPU selects priority in multiple signals to arrange most preceding audio signal all the way；Priority is in the There is certain priority in two the 19th tunnel audio signal and the 17th tunnel audio signal；
The CPU is linked into Ethernet, and remote computer is connected by Ethernet, and the remote computer passes through wherein The software of configuration is monitored to CPU, the priority of CPU Zhong Ge roads audio signal is set, controls CPU selections to receive phase The audio signal answered, master volume Regulate signal and audio Regulate signal are sent to CPU.
The third object of the present invention is achieved through the following technical solutions：A kind of Public Address system, including multiple rights will It is cascade connection, the wherein first order to seek the CPU in the Audio Matrix main frame any one of 1 to 4, each Audio Matrix main frame CPU host CPUs, other CPU at different levels are from CPU；The host CPU receives correspondence after each road audio signal is received Each road audio signal sends each to from CPU step by step；Now each CPU knows received each road audio signal from host CPU Whereabouts, Ji Ge roads audio signal to be distributed audio zone extremely；Each audio of Audio Matrix main frame where being directed to each CPU Area, comparing will distribute to the priority of each road audio signal of same audio zone, then control digital audio media matrix to divide The audio signal for being assigned to the highest priority of same audio zone is output to correspondence audio zone.
It is preferred that, including the Audio Matrix main frame any one of 32 Claims 1-4, i.e., 32 Audio Matrixs Corresponding 32 CPU are cascade connection in main frame；Wherein each Audio Matrix main frame includes 8 audio zones；
In each Audio Matrix main frame, digital audio media matrix includes 28 audio signal input ends, wherein, the 1st to 8 Audio signal input end input microphone controller is sent to CPU 8 tunnel audio signals, and the 9th to 16 audio signal input end is defeated Enter 8 external sources of sound to send to CPU 8 tunnel audio signals, the 17th audio signal input end input fire protection warning device send to CPU audio signal, the 18th audio signal input end input trigger controller sends to CPU from external timer source of sound and connect The audio signal received, the 19th audio signal input end input trigger controller sends to CPU from external fire alarm source of sound and connect The audio signal received；20th audio signal input end input is read to CPU audio letter from the second storage card or outside USB flash disk Number；The audio signal of 21st to 28 audio signal input end input 8 remote audio signal output end output of remote controllers；
In each Audio Matrix main frame, digital audio media matrix includes first selector, second selector, the 3rd selection Device and third selector；The first selector is that No. 20 selectors are selected on 40 tunnels, and the second selector is that 28 tunnels select 8 tunnels to select Device, the third selector is that No. 1 selector is selected on 36 tunnels；
In each Audio Matrix main frame, when CPU therein is host CPU, the 1st to 20 of the digital audio media matrix Audio signal input end connects wherein 20 inputs of first selector by each 3rd digital control audio processing chip respectively End；Wherein 20 inputs of 20 output ends correspondence connection second selector of the first selector；When CPU therein is From CPU when, the 1st to 20 audio signal input end of the digital audio media matrix passes through each 3rd digital control sound respectively Frequency process chip connects wherein 20 inputs of first selector；Another 20 inputs input upper level of first selector CPU is sent to this grade of CPU 20 tunnel audio signals, and 20 output ends correspondence connection second selector of first selector is wherein 20 inputs；
In each Audio Matrix, the wherein 8 inputs correspondence input of second selector is inputted to CPU's by remote controllers 8 tunnel audio signals；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audio processing chips, 8 the 4th digital control audio processing chips are connected respectively the loudspeaker front-end power amplifier of 8 audio zones；Described 20 output ends of the wherein 20 inputs correspondence connection first selector of three selectors, wherein 8 of third selector are defeated Enter end correspondence input to be inputted to CPU 8 tunnel audio signals by remote controllers, wherein 8 inputs of third selector are distinguished The output end of correspondence 8 the 4th digital control audio processing chips of connection, the output end of third selector is put by digital power Big device connects local loudspeaker, and monitor function is realized by local loudspeaker；
In each Audio Matrix, the first selector, second selector and third selector address end connect CPU respectively, CPU controls first choice according to the priority of first selector, second selector and each input audio signal of third selector Device, second selector and third selector output end export corresponding audio signal；
In each Audio Matrix, with each 4th digital control audio processing chip on each 3rd digital control audio processing chip CPU is all connected with, is adjusted by CPU on each 3rd digital control audio processing chip and each 4th digital control audio processing chip Gain and audio.
The fourth object of the present invention is achieved through the following technical solutions：A kind of method of work of Public Address system, step It is as follows：
According to the source of each road audio signal, input is set in each CPU of cascade to wherein each road audio signal Priority；
In the Audio Matrix main frame where host CPU, when the microphone controller that host CPU is connected receives audio signal, Audio signal is sent to host CPU；When the firefighting warning linkage device that host CPU is connected receives fire alarm trigger signal, by fire alarm Trigger signal is sent to host CPU, and host CPU is when receiving the fire protection warning trigger signal that it is connected, and control host CPU is connected Fire protection warning device the audio signal of fire alarm is read from the first storage card, the fire protection warning device that host CPU is connected is deposited from first Read in card storage after the audio signal of fire alarm, audio signal is sent to host CPU；The trigger controller that host CPU is connected connects Band is received to do after the timing pip of external timer source of sound of triggering, the trigger controller that host CPU is connected through from External timer source of sound reads audio signal；
Host CPU after each road audio signal is received, each road audio signal is sent to step by step it is each from CPU, and it is each from CPU is by getting the whereabouts of each road audio signal at host CPU, Ji Ge roads audio signal to be distributed audio zone extremely；Pin For each audio zone of Audio Matrix main frame where each CPU, comparing will distribute excellent to each road audio signal of same audio zone First level；Then each CPU controls the digital audio media matrix that it is connected to distribute to the highest priority of same audio zone Audio signal is output to correspondence audio zone.
It is preferred that, also comprise the following steps：
In Audio Matrix main frame where host CPU, microphone controller is connected by each microphone audio input port thereon Each microphone work station；The first controller connection host CPU in each microphone work station；
Microphone work station sends audio zone by the first controller and distributes control instruction to host CPU, and host CPU receives above-mentioned After control instruction, above-mentioned control instruction is sent to other step by step from CPU, each CPU judges the audio where distribution to its respectively In the audio signal of matrix host computer correspondence audio zone, whether the audio signal priority of microphone work station output is highest, if so, Then each CPU controls the digital audio media matrix that it is connected to send the audio signal that microphone work station is exported to correspondence audio Area；
Gain and audio of the microphone work station by the first controller to the first digital control audio processing chip are adjusted Section, is sent to the volume of the audio signal of host CPU and audio with adjusting microphone work station；
Microphone work station sends master volume Regulate signal by the first controller and keynote imitates Regulate signal to host CPU, main CPU is received after the master volume Regulate signal and keynote effect Regulate signal of the transmission of the controller of microphone work station first, and instruction is step by step Other are sent to from CPU, each CPU is received after master volume Regulate signal and keynote effect Regulate signal, is connected by each CPU Digital audio media matrix is adjusted to exporting to the volume of the audio signal of respective audio area loudspeaker and audio；
In each Audio Matrix main frame, the remote control panel of each audio zone selects local audio source by second controller The audio signal of output, the audio signal of local audio source output is output to far after the second digital control audio processing chip Range controller, is then sent to CPU by remote controllers；If now, the audio of audio zone where distribution to remote control panel In signal, the priority of the audio signal of the local audio source output of remote control panel is highest, then CPU controls DAB Mediamatrix exports the audio signal to the loudspeaker of audio zone where the remote control panel；Operator in the present embodiment Member can select the local audio source audio signal to be sent by the 3rd touch-screen in remote control panel, pass through the 3rd After touch-screen selection, second controller is that local audio source can be controlled to export corresponding audio signal；
In each Audio Matrix main frame, the remote control panel of each audio zone sends external source of sound by second controller and selected Signal is selected to CPU, CPU is received after the external source of sound selection signal of second controller transmission, judge distribution to remote control face In the audio signal of audio zone where plate, whether the priority of the audio signal of the external source of sound output of correspondence is highest, if so, then Control digital audio media matrix exports the audio signal of the external source of sound of correspondence to audio zone where the remote control panel Loudspeaker；
In each Audio Matrix main frame, the remote control panel of each audio zone is digital control to second by second controller The gain of audio processing chip and audio are adjusted, and are sent with adjusting local audio source in remote control panel to CPU sound The volume and audio of frequency signal；
In each Audio Matrix main frame, the remote control panel of each audio zone sends master volume by second controller and adjusted Signal and keynote imitate Regulate signal to CPU, and CPU receives the master volume Regulate signal of remote control panel second controller transmission Afterwards, control digital audio media matrix to exporting to the volume of the audio signal of audio zone loudspeaker where remote control panel and Audio is adjusted；
In each Audio Matrix main frame, the external equipment connected by cpu port directly triggers CPU control DAB matchmakers Volume matrix is adjusted to exporting to the volume of the audio signal of each audio zone loudspeaker of the Audio Matrix main frame and audio；Pass through The external equipment of host CPU port connection directly triggers host CPU and the digital audio media matrix pair for controlling it to be connected from CPU Export to the volume of the audio signal of each audio zone loudspeaker and audio and be adjusted；
In each Audio Matrix main frame, the external equipment connected by cpu port triggers CPU to the Audio Matrix main frame The source of sound of audio zone is selected；The external equipment connected by host CPU port directly trigger host CPU and from CPU control pair The source of sound of each audio zone is selected；
Wherein when the firefighting warning linkage device that host CPU is connected receives fire alarm trigger signal, fire alarm trigger signal is sent out Host CPU is delivered to, host CPU is when receiving the fire protection warning trigger signal that it is connected, the fire protection warning that control host CPU is connected Device reads the audio signal of fire alarm from the first storage card, and the fire protection warning device that host CPU is connected is read from the first storage card To after the audio signal of fire alarm, audio signal is sent to host CPU；Or host CPU is receiving its fire-fighting link connected During the fire alarm trigger signal that device is sent, the audio letter that external fire alarm source of sound is sent is got by its trigger controller connected Number, while the trigger controller connected by it sends fire alarm trigger signal to outside.
The present invention has the following advantages and effect relative to prior art：
(1) Audio Matrix main frame of the present invention include CPU, digital audio media matrix, microphone controller, fire protection warning device, Fire-fighting link device and trigger controller；Wherein CPU receives the audio signal from microphone work station by microphone controller, passed through Fire protection warning device receives being received on the audio signal of fire alarm, by trigger controller from external timer from storage card The audio signal of source of sound, CPU knows that each road audio signal to be distributed audio zone extremely after each road audio signal is received, Then each audio zone is directed to, comparing will distribute to the priority of each road audio signal of same audio zone, finally by numeral Audio frequency media matrix will distribute to the audio signal of the highest priority of same audio zone and be output to correspondence audio zone.It can be seen that, this Invention Audio Matrix main frame according to the priority of each road audio signal, can play the audio letter of highest priority in each audio zone Number, it is highly suitable for the places such as cell, market, hotel, office cell, airport, harbour, station and is used.And the present invention Audio Matrix main frame controls CPU, digital audio media matrix, microphone controller, fire protection warning device, fire-fighting link device and triggering Device is integrated in one, and the transmission of audio signal and control signal is carried out in the mode based on bus, with simple in construction and Powerful advantage；Constitute multiple sound resource play, multiple functional broadcast system when, without carrying out complicated connection, save Installing space and use cost.
(2) the microphone work station that microphone controller is connected in Audio Matrix main frame of the present invention includes microphone, the first control Device, the first digital control audio processing chip and the second touch-screen, can be directed to by the first digital control audio processing chip The audio signal of microphone work station output carries out the regulation of volume and audio, while microphone can also be directed to by the first controller The audio zone that work station exports audio signal is distributed is configured, in addition, microphone work station can also send master volume regulation Signal and keynote imitate Regulate signal to CPU, to trigger CPU to exporting to the volume of the audio signal in respective audio area and audio Row regulation.It can be seen that, user can carry out volume, audio and distributed audio zone according to the actual requirements in microphone work station Arbitrarily adjustment, improves the flexibility ratio that Audio Matrix main frame of the present invention is used.Regulation and the audio zone of other volume and audio Selection can directly pass through the operation realization of the second touch-screen, the use of very convenient user.
(3) CPU is connected with remote controllers in Audio Matrix main frame of the present invention, and each audio is connected by remote controllers The remote control panel in area, remote control panel of the present invention includes second controller, local audio source, the second digital control audio Process chip and the 3rd touch-screen, the present invention can be directed to remote control panel sheet by the second digital control audio processing chip The audio signal of ground audio-source output carries out the regulation of volume and audio；The present invention can pass through remote controllers second controller Send master volume Regulate signal and keynote imitates Regulate signal to CPU, to trigger CPU to exporting to the audio signal in respective audio area Volume and audio be adjusted.The audio that the present invention can also select local audio source to export by second controller simultaneously is believed Number so that user can play corresponding music in audio zone according to where selecting in remote control panel the hobby of oneself.This hair The bright audio signal that its place audio zone can also be selected to broadcast by the second controller of remote control panel is external from which Source of sound.It can be seen that, the remote control of audio zone audio signal where the present invention can realize it by remote control panel.To user Use bring great convenience.And aforesaid operations can be connected by second controller in remote control panel the Three touch-screens are realized.
(4) in Audio Matrix main frame of the present invention, CPU is connected with external fire alarm source of sound by trigger controller, when CPU is connecing When receiving the fire alarm trigger signal of fire-fighting link device transmission, the related audio letter of fire alarm can be got by fire protection warning device Number, the audio signal for the fire alarm correlation that external fire alarm source of sound is sent, therefore the present invention can also be got by trigger controller Allow users to play corresponding fire alarm audio signal according to demand.The present invention can also send fire alarm by trigger controller Trigger signal has further expanded the use function of Audio Matrix main frame of the present invention to external equipment.In addition, audio square of the present invention In battle array main frame, CPU is connected with cuts controller by force, when CPU receives the fire alarm trigger signal of fire-fighting link device transmission, by cutting by force Controller relevant device is out of service, it is ensured that security against fire.
(5) in Audio Matrix main frame of the present invention, CPU is connected with the first touch-screen, and user can be real by the first touch-screen Now interacted with CPU, realize the control to Audio Matrix main frame.
(6) Public Address system of the present invention is made up of multiple Audio Matrix main frames in the present invention, wherein each Audio Matrix The CPU of main frame is cascade connection, host CPU after each road audio signal is received, by each road audio signal be sent to step by step it is each from CPU, and it is each from whereabouts of the CPU by getting each road audio signal at host CPU.It is directed to Audio Matrix where each CPU Each audio zone of main frame, comparing will distribute to the priority of each road audio signal of same audio zone；Then each CPU controls its institute The digital audio media matrix of connection will distribute to the audio signal of the highest priority of same audio zone and be output to correspondence audio Area.Therefore Public Address system of the present invention being capable of extended audio area, level by way of the CPU level connection in each Audio Matrix main frame Only in each CPU when connection, occur annexation without other equipment, public broadcasting is got therefore, it is possible to quick assembling System, has the advantages that simple in construction, strong antijamming capability.Cascading the CPU's of 32 Audio Matrix main frames in the present invention In the case of, the lossless transmission of audio signal can be realized, therefore audio zone can extend to 256, disclosure satisfy that large-scale field Use.
(7) in Public Address system of the present invention, audio signal, control signal respectively from CPU etc. both from host CPU, by The control of host CPU, therefore only pass through the corresponding operating to host CPU in the present invention, you can realize all audio zone audio signals Control, for example export to the volume of the audio signal of each audio zone and audio regulation, and each audio zone source of sound selection etc. control System.
Brief description of the drawings
Fig. 1 is the structured flowchart of Audio Matrix main frame of the present invention.
Fig. 2 a are the circuit theory diagrams of trigger controller main circuit in Audio Matrix main frame of the present invention.
Fig. 2 b are the circuit theory diagrams of the power amplifier of trigger controller first in Audio Matrix main frame of the present invention.
Fig. 2 c are the circuit theory diagrams of the power amplifier of trigger controller second in Audio Matrix main frame of the present invention.
Fig. 3 is the circuit theory diagrams of digital audio media matrix in Audio Matrix main frame of the present invention.
Fig. 4 be microphone work station of the present invention the second touch-screen in arrange audio zone sequence number button when schematic diagram.
Fig. 5 is to arrange showing during the source of sound sequence number button of external source of sound in the 3rd touch-screen of remote control panel of the present invention It is intended to.
Fig. 6 is signal when the first touch-screen that Audio Matrix host CPU of the present invention is connected sets 16 source of sound buttons Figure.
Fig. 7 is the structural representation of each CPU level connection in Public Address system of the present invention.
Fig. 8 is the electricity of the digital audio media matrix from Audio Matrix main frame where CPU in Public Address system of the present invention Road schematic diagram.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited In this.
Embodiment
Present embodiment discloses a kind of Audio Matrix main frame, as shown in figure 1, including CPU, digital audio media matrix, words Cylinder controller, fire protection warning device, fire-fighting link device, remote controllers, trigger controller and controller is cut by force；
In the present embodiment, microphone controller is provided with multiple microphone audio input ports, and microphone controller connection CPU will The audio signal of microphone controller audio input port input is sent to CPU；Microphone controller can be used in the present embodiment The microprocessors such as single-chip microcomputer.
In the present embodiment, fire protection warning device connects the first storage card of the audio signal for the fire alarm that is stored with；The fire-fighting report Alert device connection CPU, controls fire protection warning device to read audio signal from the first storage card by CPU, and by the audio of reading Signal is sent to CPU；Fire protection warning device can use the microprocessors such as single-chip microcomputer in the present embodiment.
In the present embodiment, fire-fighting link device is provided with multiple fire alarm trigger signal input ports, and the fire-fighting link device connects CPU is met, the fire alarm trigger signal received is sent to CPU, CPU controls fire protection warning when receiving fire alarm trigger signal Device reads the audio signal of fire alarm from the first storage card；Wherein each fire alarm trigger signal input port of fire-fighting link device can be with Connection is in each local fire-fighting link switch, and when fire-fighting link switch is pressed, fire-fighting link device can receive fire alarm and touch Signal.
In the present embodiment, trigger controller connect band does the external timer source of sound and external fire alarm source of sound of triggering, touches Send out controller connection CPU, CPU and the doing after trigger signal of external timer source of sound is received by trigger controller, by touching Send out controller and receive the audio signal that external timer source of sound is sent；CPU is receiving the fire alarm triggering of fire-fighting link device transmission During signal, the audio signal that external fire alarm source of sound is sent is got by trigger controller, while outside by trigger controller Portion sends fire alarm trigger signal；
Trigger controller includes main circuit, the first power amplifier and the second power amplifier in the present embodiment；
As shown in Figure 2 a, main circuit includes the first photo-coupler IS600, the second photo-coupler IS601, the first relay K600C and the second relay K601C；Photo-coupler IS600, the second photo-coupler IS601 model in the present embodiment EL357.First relay includes two groups of contacts, respectively first group contact and the second composition contact, the coil of the first relay Anode connects dc source 24V by a backward dioded D600 connection coil negative terminal, the coil anode of the first relay, the The coil negative terminal connection NPN triode Q600 of one relay colelctor electrode, NPN triode Q600 base stage is connected by resistance R612 CPU I/O port is connect, NPN triode Q600 base stage is grounded by being sequentially connected after resistance R612 and resistance R614, the poles of NPN tri- Pipe Q600 grounded emitter；First first group of relay contact is by the first normally closed stationary contact, the first normally opened stationary contact and first Movable contact is constituted, and the first second group of relay contact is by the second normally closed stationary contact, the second normally opened stationary contact and the second movable contact group Into wherein the first movable contact and the second movable contact are all connected with one end of external timer source of sound trigger signal output, first is normally opened Stationary contact and the second normally opened stationary contact are all connected with the other end of external timer source of sound trigger signal output, the first normally opened stationary contact It is grounded with the second normally opened stationary contact by resistance R622.First movable contact and the second movable contact series opposing diode D603 and electricity The first input port of the first photo-coupler is connected after resistance R624, dc source+5V passes through diode D601 the first optocouplers of connection Second input port of clutch；Between the first input port of first photo-coupler and the second input port of the first photo-coupler Be connected with a backward dioded D602, the output port of the first photo-coupler by resistance R615 connection dc source+3.3V, The output port of the first photo-coupler connects CPU I/O port simultaneously；The wherein first input port of the first photo-coupler and Second input port of one photo-coupler corresponds to anode and the negative electrode two ends in the first photo-coupler internal illumination source respectively.Second Relay includes two groups of contacts, respectively the 3rd group contact and the 4th composition contact, and the coil anode of the second relay passes through one Individual backward dioded D606 connections coil negative terminal, the coil anode connection dc source 24V of the second relay, the second relay Coil negative terminal connection NPN triode Q601 colelctor electrode, the IO that NPN triode Q601 base stage passes through resistance R613 connections CPU Port, NPN triode Q601 base stage is grounded by being sequentially connected after resistance R613 and resistance R617, NPN triode Q601's Grounded emitter；The 3rd group of contact of second relay is by the 3rd normally closed stationary contact, the 3rd normally opened stationary contact and the 3rd movable contact group Into, the 4th group of contact of the second relay is made up of the 4th normally closed stationary contact, the 4th normally opened stationary contact and the 4th movable contact, wherein the Three movable contacts and the 4th movable contact are all connected with one end of external equipment fire alarm trigger signal input, the 3rd normally opened stationary contact and the 4th Normally opened stationary contact is all connected with the other end of external equipment fire alarm trigger signal input, the 3rd normally opened stationary contact and the 4th normally opened stationary contact Point is grounded by resistance R623.Is connected after 3rd movable contact and the 4th movable contact series opposing diode D605 and resistance R625 The first input port of two photo-couplers, the second input that dc source+5V passes through diode D601 the second photo-couplers of connection Port；One is connected between the first input port of second photo-coupler and the second input port of the second photo-coupler reversely Diode D604, the output port of the second photo-coupler is by resistance R616 connection dc source+3.3V, while the second optical coupling The output port of device connects CPU I/O port,；Wherein the of the first input port of the second photo-coupler and the second photo-coupler Two input ports correspond to anode and the negative electrode two ends in the second photo-coupler internal illumination source respectively.
As shown in Figure 2 b, the first power amplifier includes the first operational amplifier U600A, the second operational amplifier U600B And first potentiometer, wherein the first potentiometer is slide rheostat；First operational amplifier U600 inverting input passes through The audio signal output negative terminal that external timer source of sound is connected after resistance R601 and electrochemical capacitor E600 is sequentially connected in series, wherein being electrolysed Electric capacity E600 positive pole connects the audio output negative terminal of external timer source of sound, the first operational amplifier U600A normal phase input end The audio input anode of external timer source of sound, wherein electrochemical capacitor are connected after resistance R601 and electric capacity E600 by being sequentially connected in series E601 negative pole connects the audio output anode of external timer source of sound.One end connection of resistance R601 and electrochemical capacitor E600 connections It is grounded after resistance R608 in parallel and polarity free capacitor C601, one end connection of resistance R602 and electrochemical capacitor E601 connections is in parallel Resistance R609 and polarity free capacitor C603 after be grounded, the first operational amplifier U600A normal phase input end connection electricity in parallel Hinder and be grounded after R603 and polarity free capacitor C604.The resistance of first operational amplifier U600A inverting input connection parallel connection The first operational amplifier U600A output end is connected after R600 and polarity free capacitor C600.First operational amplifier U600A's is defeated Go out one end of the first potentiometer of end connection, the other end ground connection of the first potentiometer, the sliding end of the first potentiometer connects series connection The second operational amplifier U600B inverting input, the second operational amplifier are connected after electrochemical capacitor E604 and resistance R618 U600B positive input end grounding, the second operational amplifier U600B inverting input connection resistance R620 in parallel and electrodeless Property electric capacity C621 after connect the second operational amplifier U600B output end, the second operational amplifier U600B output end connection CPU I/O port, the audio signal of external timer source of sound output is inputted into CPU after the first power amplifier, wherein The multiplication factor of the first power amplifier can be adjusted by the first potentiometer.
As shown in Figure 2 c, the second power amplifier includes the 3rd operational amplifier U601A, four-operational amplifier U601B And second potentiometer, wherein the second potentiometer is slide rheostat；3rd operational amplifier U600 inverting input passes through The audio signal output negative terminal of connection and external fire alarm source of sound after resistance R605 and electrochemical capacitor E602 is sequentially connected in series, wherein being electrolysed Electric capacity E602 positive pole connects the audio output negative terminal with external fire alarm source of sound, the 3rd operational amplifier U601B normal phase input end The audio input anode of external fire alarm source of sound is connected after resistance R606 and electrochemical capacitor E603 by being sequentially connected in series, wherein electrolysis electricity The negative pole for holding E603 connects the audio output anode of external fire alarm source of sound.One end connection of resistance R605 and electrochemical capacitor E602 connections It is grounded after resistance R610 in parallel and polarity free capacitor C606, the electricity of one end connection parallel connection of resistance R606 and electric capacity E603 connections Hinder and be grounded after R611 and polarity free capacitor C608, the resistance of the 3rd operational amplifier U601B normal phase input end connection parallel connection It is grounded after R607 and polarity free capacitor C609.The resistance R604 of 3rd operational amplifier U601A inverting input connection parallel connection With the output end that the 3rd operational amplifier U601A is connected after polarity free capacitor C605.3rd operational amplifier U601A output end Connect one end of the second potentiometer, the other end ground connection of the second potentiometer, the electrolysis of the sliding end connection series connection of the second potentiometer Four-operational amplifier U601B inverting input is connected after electric capacity E605 and resistance R619, four-operational amplifier U601B's Positive input end grounding, the resistance R621 and polarity free capacitor of four-operational amplifier U601B inverting input connection parallel connection Four-operational amplifier U601B output end is connected after C622, four-operational amplifier 601B output end connects CPU IO ends Mouthful, the audio signal of external fire alarm source of sound output is inputted into CPU after the second power amplifier, wherein can pass through second Potentiometer adjusts the multiplication factor of the second power amplifier.
Trigger controller receives the timing pip that external timing source of sound is sent by main circuit in the present embodiment, passes through First power amplifier receives the audio signal that external timing source of sound is sent, and sends to CPU.CPU passes through in the present embodiment The main circuit of trigger controller sends fire alarm trigger signal, and the sound that external fire alarm source of sound is sent is received by the second power amplifier Frequency signal, and send to CPU.
In the present embodiment, CPU is connected with cuts controller by force, needs to stop fortune when fire alarm occurs by cutting controller by force and connecting Capable equipment, when CPU receives the fire alarm trigger signal of fire-fighting link device transmission, sends a control signal to and cuts controller by force, Need equipment out of service out of service when controlling fire alarm to occur by cutting controller by force.Cut controller by force in the present embodiment For can be with relay.
In the present embodiment, CPU is provided with multiple external audio input ports, connects external by external audio input port Source of sound, receives the audio signal that external source of sound is sent；Wherein external source of sound can be CD, MP3, radio, computer etc..In this reality Apply in example, CPU is provided with multiple external audio input ports, 8 external sources of sound can be connected, wherein external source of sound can be provided The audio signals such as background music.
In the present embodiment, remote controllers are provided with multiple remote audio signal input ports and multiple remote audios letter Number output port；Remote controllers are arranged on each remote of each audio zone by each remote audio signal input port connection thereon Process control panel, the audio signal for receiving remote control panel transmission；The remote controllers connect CPU, by thereon Each remote audio signal output port audio signal for receiving it from each remote control panel send CPU to；Long-range control In device processed, a remote audio signal output port is shared per several remote audio signal input ports, wherein connection belongs to same Each remote audio signal input port of one audio zone remote control panel shares a remote audio signal output port, i.e., same The remote control panel of one audio zone sends the audio signal to remote controllers by same remote in remote controllers Journey Audio output port is output in CPU, and CPU is received after the audio signal of remote controllers transmission, is sent to numeral Audio frequency media matrix.
In the present embodiment, CPU is connected with the second storage card or outside USB flash disk.
In the present embodiment, CPU connection digital audio media matrixes, CPU is being received from microphone controller, fire protection warning After device, external source of sound, trigger controller, remote controllers, the second storage, the audio signal of outside USB flash disk, each road audio letter is known Number whereabouts, Ji Ge roads audio signal to be distributed audio zone extremely；Each audio zone is directed to simultaneously, comparing will distribute to same The priority of each road audio signal of audio zone, then controls digital audio media matrix by the preferential of distribution to same audio zone Level highest audio signal is output to correspondence audio zone.
In the present embodiment, CPU port is connected with the first touch-screen, and first touch-screen is 7 cun of capacitance touch color screens. In the present embodiment, operating personnel can be triggered the first controller by the operation of the first touch-screen and send relevant control instruction Signal sets relevant parameter.For example, digital audio media matrix can be directed to output by the operation of the first touch-screen Volume and audio to the audio signal of each audio zone loudspeaker are adjusted；It can be set by the operation of the first touch-screen CPU to be received the source of audio signal；CPU is set to receive certain road or a few road audio signals.
In the present embodiment, above-mentioned microphone controller connects each microphone by each microphone audio input port thereon and worked Stand；Microphone work station includes microphone, the first controller, the first digital control audio processing chip and second in the present embodiment Touch-screen, the audio signal output end of the words microphone connects the input of the first digital control audio processing chip, described The output end of first digital control audio processing chip connects the microphone audio input port of microphone controller；First numeral Control audio processing chip to connect the first controller, the increasing of the first digital control audio processing chip is directed to by the first controller Benefit and audio are adjusted；First controller connects CPU, and second touch-screen connects the first controller.In this implementation The the first digital control audio frequency process core that can be connected in example by the operation on the second touch-screen for the first controller The gain of piece and audio are adjusted, so as to realize the volume of microphone work station microphone institute exports audio signal and the tune of audio Section.In the present embodiment, the whereabouts of microphone work station exports audio signal can be selected by the operation of the second touch-screen, i.e., The audio zone of distribution extremely.
In this implementation, above-mentioned each remote control panel includes second controller, local audio source, the second digital control sound Frequency process chip and the 3rd touch-screen；The second controller connects CPU, and the 3rd touch-screen connects second controller；The Two controllers connect local audio source, for the audio signal for selecting local audio source to export；The second digital control audio The input connection local audio source of process chip, output end connects one of them long-range sound of remote controllers by signal wire Frequency signal input port；The second controller connects the second digital control audio processing chip, for the second digital control sound The gain of frequency process chip and the regulation of audio.In the present embodiment can be by the operation on the 3rd touch-screen for the second control The gain for the second digital control audio processing chip that device processed is connected and audio are adjusted, so as to realize remote control panel The volume for the audio signal that local audio source is exported and the regulation of audio.
In the present embodiment, digital audio media matrix includes 28 audio signal input ends, wherein, the 1st to 8 audio Signal input part input microphone controller is sent to CPU 8 tunnel audio signals, and the 9th to 16 audio signal input end inputs 8 External source of sound is sent to CPU 8 tunnel audio signals, and the 17th audio signal input end input fire protection warning device is sent to CPU's Audio signal, the 18th audio signal input end input trigger controller sends to CPU from external timer source of sound and received Audio signal, the 19th audio signal input end input trigger controller, which is sent to CPU from external fire alarm source of sound, to be received Audio signal；20th audio signal input end input is read to CPU audio signal from the second storage card or outside USB flash disk； The audio signal of 21st to 28 audio signal input end input 8 remote audio signal output end output of remote controllers, i.e., Carry out 8 tunnel audio signals of the 21st to 28 audio signal input end correspondence input, the long-range control from 8 audio zones is corresponded to respectively Panel local audio source processed, 1 road signal of the 21st audio signal input end correspondence input is long-range from first audio zone Control panel local audio source, by that analogy, 1 road signal of the 28th audio signal input end correspondence input is from the 8th sound The remote control panel local audio source in frequency area.
As shown in figure 3, in the present embodiment, digital audio media matrix includes first selector, second selector, the 3rd Selector and third selector；The first selector is that No. 20 selectors are selected on 40 tunnels, and the second selector is that 8 tunnels are selected on 28 tunnels Selector, the third selector is that No. 1 selector is selected on 36 tunnels
In the present embodiment, the 1st to 20 audio signal input end of digital audio media matrix passes through each 3rd number respectively Word control audio processing chip connects 20 inputs of first selector；20 output ends correspondence of the first selector connects Wherein 20 inputs of second selector are connect, the wherein 8 inputs correspondence input of second selector is defeated by remote controllers Enter to CPU 8 tunnel audio signals；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audios Process chip, 8 the 4th digital control audio processing chips are connected respectively the loudspeaker front-end power amplification of 8 audio zones Device；20 output ends of the wherein 20 inputs correspondence connection first selector of the third selector, third selector Wherein 8 input correspondence inputs are inputted to CPU 8 tunnel audio signals by remote controllers, and wherein 8 of third selector are defeated Enter the output end that end is connected respectively 8 the 4th digital control audio processing chips, the output end of third selector passes through number Word power amplifier connects local loudspeaker, and monitor function is realized by local loudspeaker；First selector, second selector and Third selector address end connects CPU respectively, and CPU respectively inputs sound according to first selector, second selector and third selector The priority of frequency signal, control first selector, second selector and third selector output end export corresponding audio signal； CPU is all connected with each 4th digital control audio processing chip on each 3rd digital control audio processing chip, is adjusted by CPU Gain with each 4th digital control audio processing chip and audio on each 3rd digital control audio processing chip.
The first digital control audio processing chip, the second digital control audio processing chip, the 3rd count in the present embodiment Word controls audio processing chip and the 4th digital control audio processing chip to select TM2314.
The present embodiment also discloses a kind of method of work of above-mentioned Audio Matrix main frame, and step is as follows：
According to the source of each road audio signal, input is set in CPU to the priority of wherein each road audio signal；
When microphone controller receives audio signal, audio signal is sent to CPU；When firefighting warning linkage device is received During to fire alarm trigger signal, fire alarm trigger signal is sent to CPU, CPU is when receiving fire protection warning trigger signal, and control disappears Anti- alarm reads the audio signal of fire alarm from the first storage card, and fire protection warning device reads fire alarm from the first storage card After audio signal, audio signal is sent to CPU；When trigger controller receives the external timer source of sound that band does triggering After timing pip, CPU reads audio signal by trigger controller from external timer source of sound；
CPU knows the whereabouts of each road audio signal after each road audio signal is received, and Ji Ge roads audio signal to be divided The audio zone being assigned to；Each audio zone is directed to simultaneously, comparing will distribute to the priority of each road audio signal of same audio zone； Then control digital audio media matrix will distribute to the audio signal of the highest priority of same audio zone and be output to diaphone Frequency area.CPU is by controlling first selector, second selector and the 3rd selection in digital audio media matrix in the present embodiment The address end signal of device, realization sends respective audio signal to respective audio area.For example now second microphone work station is sent out Go out audio signal, the whereabouts of its audio signal sent is the first audio zone, now to compare distribution each to the first audio zone by CPU The priority of road audio signal, if the highest priority for the audio signal that second microphone work station is sent, CPU passes through logarithm The control of first selector, second selector and third selector address end signal in word tone frequency mediamatrix, by second word The front-end power that the audio signal that cylinder work station is sent passes through final output after three selectors to each loudspeaker in the first audio zone In amplifier, in being played out after power amplifier amplifies by loudspeaker.
In this embodiment, the method for work of Audio Matrix main frame is further comprising the steps of：
Microphone work station sends audio zone by the first controller and distributes control instruction to CPU, and CPU receives above-mentioned control After instruction, judge distribution to correspondence audio zone audio signal in, microphone work station output audio signal priority whether be Highest, if so, then control digital audio media matrix sends the audio signal that microphone work station is exported to correspondence audio zone； The audio that operating personnel can select microphone work station to export by the second touch-screen in microphone work station in the present embodiment is believed Audio zone extremely number is distributed, after being selected by the second touch-screen, the first controller is that can send corresponding audio zone distribution Control instruction is to CPU, and CPU is received after above-mentioned control instruction, it is possible to know going for the audio signal that microphone work station is exported To.Specifically, as shown in figure 4, being disposed with each audio zone sequence number button, such as Zone1, Zone2 ... in the second touch-screen Zone8, when the several audio zone sequence number buttons of selection some or certain, the first controller will send export microphone control station Control instruction is distributed to CPU in the audio zone that audio signal is distributed to some or certain several audio zones.
Gain and audio of the microphone work station by the first controller to the first digital control audio processing chip are adjusted Section, is sent to the volume of CPU audio signal and audio with adjusting microphone work station；Microphone work can be passed through in the present embodiment The second touch-screen in standing triggers gain and audio of first controller to the first digital control audio processing chip and adjusted Section.Specifically, be provided with volume knob and audio regulation button in the second touch-screen, by volume knob and The operation of audio regulation button causes gain and audio of first controller for the first digital control audio processing chip to carry out Regulation.
Microphone work station sends master volume Regulate signal and keynote by the first controller imitates Regulate signal and connects to CPU, CPU After the master volume Regulate signal and keynote effect Regulate signal that receive the transmission of the controller of microphone work station first, pass through DAB matchmaker Volume matrix is adjusted to exporting to the volume of the audio signal of respective audio area loudspeaker and audio, i.e., CPU is by controlling number Word tone frequency mediamatrix, microphone work station exports the volume and sound of the audio signal to digital audio media matrix by CPU Effect is adjusted；In the present embodiment, operating personnel can be triggered the first controller by the second touch-screen and send master volume tune Save signal and keynote imitates Regulate signal to CPU, then CPU is according to master volume Regulate signal and keynote the effect regulation letter received Number, the digital control audio processing chip of correspondence the 3rd and/or correspondence the 4th that microphone work station exports audio signal is passed through The gain of digital control audio processing chip and audio are adjusted, so as to realize that microphone work station is output to the audio of audio zone Volume and the audio regulation of signal.Specifically, being provided with the second touch-screen, master volume adjusts button and keynote effect regulation is pressed Button, causes the first controller to send master volume Regulate signal by the operation for adjusting button and keynote effect regulation button to master volume Regulate signal is imitated to CPU with keynote.
The remote control panel of each audio zone selects the audio signal that local audio source is exported by second controller, locally The audio signal of audio-source output is output to remote controllers after the second digital control audio processing chip, then by long-range Controller is sent to CPU；If now, in the audio signal of audio zone where distribution to remote control panel, remote control panel Local audio source output audio signal priority be highest, then CPU control digital audio media matrix the audio is believed Number output to audio zone where the remote control panel loudspeaker；Operating personnel can pass through remote control in the present embodiment The 3rd touch-screen selection local audio source audio signal to be sent in panel, after being selected by the 3rd touch-screen, second Controller is that local audio source can be controlled to export corresponding audio signal.
Remote control panel sends external source of sound selection signal to CPU by second controller, and CPU receives the second control After the external source of sound selection signal that device is sent, in the audio signal of audio zone where judging distribution to remote control panel, correspondence Whether the priority of the audio signal of external source of sound output is highest, if so, then control digital audio media matrix will be corresponding outer The audio signal for putting source of sound is exported to the loudspeaker of audio zone where the remote control panel；In the present embodiment, operating personnel can To select the external source of sound of the CPU audio signals to be received by the 3rd touch-screen, after being selected by the 3rd touch-screen, the Two controllers can send corresponding external source of sound selection signal to CPU.Specifically, as shown in figure 5, being arranged in the 3rd touch-screen There are the source of sound sequence number of external source of sound, such as Line1, Line2 ... Line8, when selecting some source of sound sequence number button, second controller It will send and select the external source of sound selection signal of the external source of sound of source of sound sequence number correspondence to CPU.
Gain and audio of the remote control panel by second controller to the second digital control audio processing chip are carried out Regulation, is sent to the volume of CPU audio signal and audio with adjusting local audio source in remote control panel；The present embodiment In, operating personnel can be triggered by the 3rd touch-screen second controller to the gain of the second digital control audio processing chip and Audio is adjusted.Specially：Volume knob and audio regulation button are provided with the 3rd touch-screen, by volume The operation for adjusting button and audio regulation button causes second controller to be directed to the gain of the second digital control audio processing chip It is adjusted with audio.
Remote control panel sends master volume Regulate signal by second controller and keynote imitates Regulate signal to CPU, CPU After the master volume Regulate signal and keynote effect Regulate signal that receive the transmission of remote control panel second controller, the digital sound of control The volume and audio that export to the audio signal of audio zone loudspeaker where remote control panel are adjusted frequency mediamatrix； In the present embodiment, operating personnel can be triggered second controller by the 3rd touch-screen and send master volume Regulate signal and keynote effect Regulate signal is to CPU, and then CPU imitates Regulate signal to digital audio media according to the master volume Regulate signal and keynote received Gain and the sound of corresponding 3rd digital control audio processing chip and/or corresponding 4th digital control audio processing chip in matrix Effect is adjusted, so that the audio letter of audio zone loudspeaker where realizing digital audio media Output matrix to remote control panel Number volume and audio regulation.Specifically, being provided with master volume regulation button and keynote effect regulation button in the 3rd touch-screen, lead to Crossing the operation to master volume regulation button and keynote effect regulation button causes second controller to send master volume Regulate signal and master Audio Regulate signal is to CPU.
The external equipment connected by cpu port directly triggers CPU and controls digital audio media matrix to exporting to each sound The volume and audio of the audio signal of frequency area loudspeaker are adjusted；CPU port is connected with the first touch-screen in the present embodiment, CPU can directly be triggered to the corresponding 3rd digital control audio in DAB mediamatrix by the operation of the first touch-screen The gain of process chip and/or corresponding 4th digital control audio processing chip and audio are adjusted, so as to realize digital sound Frequency mediamatrix is exported to the audio signal volume of respective audio area loudspeaker and audio regulation.Specifically, in the first touch-screen In be provided with volume knob and audio regulation button, pass through to master volume adjust button and keynote effect adjust button operation So that CPU is realized to the 3rd digital control audio processing chip and/or gain and the sound of the 4th digital control audio processing chip Effect is adjusted.
The external equipment triggering CPU connected by cpu port is selected the source of sound of each audio zone；In the present embodiment In selections of the CPU to the source of sound of each audio zone is realized by the operation of the first touch-screen, specifically, as shown in fig. 6, first It is provided with 17 source of sound buttons in touch-screen, including 8 external source of sound button Line1 to Line8,8 audio zones correspondences are long-range The source of sound button WP1 to WP8 that control panel is provided；1 from CPU the second storage cards connected or outside USB flash disk (such as MP3) Source of sound button, when pressing some source of sound button, will select corresponding source of sound for correspondence audio zone.It to be e.g. the first sound Frequency area selects source of sound, then may be selected to click on one of buttons of the Line1 into Line8, WP1 and MP3, if selection One of them of Line1 to Line8, then the source of sound of the first audio zone by for 8 external sources of sound one of them, if selection WP1, then the source of sound of the first audio zone is by the remote control panel from the audio zone, such as figure selection MP3, then the first audio The source of sound in area will be from the second storage card or outside USB flash disk.
In the present embodiment above-mentioned steps, when firefighting warning linkage device receives fire alarm trigger signal, fire alarm is triggered and believed Number send to CPU, CPU can control fire protection warning device to be read from the first storage card when receiving fire protection warning trigger signal Get fire alert audio signal, so as to be sent to CPU；Trigger controller can also be controlled to get the sound that external fire alarm source of sound is sent Frequency signal, so that CPU is sent to, while sending fire alarm trigger signal to outside relevant device by trigger controller.Above-mentioned two The selection of mode of operation is planted, operating personnel can be set in CPU.
In the present embodiment, CPU receives 28 tunnel audio signals, and the source of each road audio signal is as follows：Wherein the 1st to 8 tunnel 8 microphone work stations that audio signal is connected from microphone controller, the 9th to 16 tunnel audio signal comes from 8 external sources of sound, 17th tunnel audio signal comes from fire protection warning device, the external timer sound that the 18th tunnel audio signal is connected from trigger controller Source, the external fire alarm source of sound that the 19th tunnel audio signal is connected from trigger controller, the 20th tunnel audio signal connects from CPU The second storage card for connecing or outside USB flash disk, 8 audio zones that the 21st to 28 tunnel audio signal is connected from remote controllers it is remote Process control panel；
Wherein 1 or several microphone work stations are as artificial urgent broadcast work station in 8 microphone work stations, if being left Cylinder work station is common broadcast work station, and the audio signal priority level initializing of artificial urgent broadcast work station output is highest；Come The priority level initializing of the 17th tunnel audio signal from the external tunnel audio signal of fire alarm source of sound the 19th or from fire protection warning device is second； The priority level initializing of the audio signal of common broadcast work station output is the 3rd；Come the 18th tunnel of the external timer source of sound of self-timing The priority level initializing of audio signal is the 4th；21st to 28 tunnel audio signal of the remote control panel from 8 audio zones Priority level initializing is the 5th；The priority level initializing of the 9th to the 16 tunnel audio signal from external timer source of sound is the 6th；Come from The priority level initializing of 20th tunnel audio signal of the second storage card or outside USB flash disk is the 7th；Wherein priority be in the 3rd it is several There is certain priority in road audio signal；The 3rd is in when the audio signal of distribution to certain audio zone includes priority During multipath audio signal, now CPU selects priority in multiple signals to arrange most preceding audio signal all the way.Priority is in the There is certain priority in two the 19th tunnel audio signal and the 17th tunnel audio signal；This preferred sequence can be according to demand Progress is set.
CPU is linked into Ethernet in the present embodiment, and remote computer is connected by Ethernet, and remote computer can lead to The corresponding SDK bags (SDK) crossed the software wherein configured or be loaded into system, realization CPU is monitored, The source of sound set to the priority of CPU Zhong Ge roads audio signal, received audio signal to CPU is selected, sends master Volume adjustment signals and audio Regulate signal are to CPU.
Embodiment 2
The present embodiment discloses multiple Audio Matrix main frames in a kind of Public Address system, including embodiment 1, as shown in fig. 7, CPU in each Audio Matrix main frame is cascade connection, and wherein first order CPU host CPUs, other CPU at different levels are from CPU；It is described Host CPU is after each road audio signal is received, and each road audio signal that correspondence is received sends each to from CPU step by step；This When each CPU the whereabouts of received each road audio signal is known from host CPU, Ji Ge roads audio signal to be distributed sound extremely Frequency area；Each audio zone of Audio Matrix main frame where being directed to each CPU, comparing will distribute to each road audio letter of same audio zone Number priority, then control digital audio media matrix by distribute to same audio zone highest priority audio signal it is defeated Go out to correspondence audio zone.
In the present embodiment, altogether including 32 Audio Matrix main frames, i.e., corresponding 32 in 32 Audio Matrix main frames CPU is cascade connection；Wherein each Audio Matrix main frame includes 8 audio zones；Therefore the present embodiment Public Address system altogether Including 256 audio zones.Wherein 8 audio zones that the 1st CPU in cascade is Audio Matrix main frame where host CPU are defined as 8 audio zones of Audio Matrix main frame where the 2nd CPU (from CPU) in cascade are defined as the 9th to 16 by the 1st to 8 audio zone Audio zone, the like, 8 audio zones of Audio Matrix main frame where the 32nd CPU (from CPU) are defined as the 249th to 256 Audio zone.
In each Audio Matrix main frame, digital audio media matrix includes 28 audio signal input ends, wherein, the 1st to 8 Audio signal input end input microphone controller is sent to CPU 8 tunnel audio signals, and the 9th to 16 audio signal input end is defeated Enter 8 external sources of sound to send to CPU 8 tunnel audio signals, the 17th audio signal input end input fire protection warning device send to CPU audio signal, the 18th audio signal input end input trigger controller sends to CPU from external timer source of sound and connect The audio signal received, the 19th audio signal input end input trigger controller sends to CPU from external fire alarm source of sound and connect The audio signal received；20th audio signal input end input is read to CPU audio letter from the second storage card or outside USB flash disk Number；The audio signal of 21st to 28 audio signal input end input 8 remote audio signal output end output of remote controllers；
In each Audio Matrix main frame, digital audio media matrix includes first selector, second selector, the 3rd selection Device and third selector；The first selector is that No. 20 selectors are selected on 40 tunnels, and second selector is that No. 8 selectors are selected on 28 tunnels, The third selector is that No. 1 selector is selected on 36 tunnels；
In each Audio Matrix main frame, when CPU therein is host CPU, as shown in figure 8, the digital audio media matrix The 1st to 20 audio signal input end its of first selector is connected by each 3rd digital control audio processing chip respectively In 20 inputs；Wherein 20 inputs of 20 output ends correspondence connection second selector of the first selector；When CPU therein be from CPU when, as shown in figure 8, the 1st to 20 audio signal input end of digital audio media matrix leads to respectively Cross wherein 20 inputs that each 3rd digital control audio processing chip connects first selector；Another 20 of first selector Input input upper level CPU is sent to this grade of CPU 20 tunnel audio signals, and 20 output ends correspondence of first selector is connected Wherein 20 inputs of second selector；
In each Audio Matrix, the wherein 8 inputs correspondence input of second selector is inputted to CPU's by remote controllers 8 tunnel audio signals；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audio processing chips, 8 the 4th digital control audio processing chips are connected respectively the loudspeaker front-end power amplifier of 8 audio zones；Described 20 output ends of the wherein 20 inputs correspondence connection first selector of three selectors, wherein 8 of third selector are defeated Enter end correspondence input to be inputted to CPU 8 tunnel audio signals by remote controllers, wherein 8 inputs of third selector are distinguished The output end of correspondence 8 the 4th digital control audio processing chips of connection, the output end of third selector is put by digital power Big device connects local loudspeaker, and monitor function is realized by local loudspeaker；
In each Audio Matrix, the first selector, second selector and third selector address end connect CPU respectively, CPU controls first choice according to the priority of first selector, second selector and each input audio signal of third selector Device, second selector and third selector output end export corresponding audio signal；
In each Audio Matrix, with each 4th digital control audio processing chip on each 3rd digital control audio processing chip CPU is all connected with, is adjusted by CPU on each 3rd digital control audio processing chip and each 4th digital control audio processing chip Gain and audio.
The present embodiment also discloses a kind of method of work of above-mentioned Public Address system, comprises the following steps that：
According to the source of each road audio signal, input is set in each CPU of cascade to wherein each road audio signal Priority；
In the Audio Matrix main frame where host CPU, when the microphone controller that host CPU is connected receives audio signal, Audio signal is sent to host CPU；When the firefighting warning linkage device that host CPU is connected receives fire alarm trigger signal, by fire alarm Trigger signal is sent to host CPU, and host CPU is when receiving the fire protection warning trigger signal that it is connected, and control host CPU is connected Fire protection warning device the audio signal of fire alarm is read from the first storage card, the fire protection warning device that host CPU is connected is deposited from first Read in card storage after the audio signal of fire alarm, audio signal is sent to host CPU；The trigger controller that host CPU is connected connects Band is received to do after the timing pip of external timer source of sound of triggering, the trigger controller that host CPU is connected through from External timer source of sound reads audio signal；
Host CPU after each road audio signal is received, each road audio signal is sent to step by step it is each from CPU, and it is each from CPU is by getting the whereabouts of each road audio signal at host CPU, Ji Ge roads audio signal to be distributed audio zone extremely；Pin For each audio zone of Audio Matrix main frame where each CPU, comparing will distribute excellent to each road audio signal of same audio zone First level；Then each CPU controls the digital audio media matrix that it is connected to distribute to the highest priority of same audio zone Audio signal is output to correspondence audio zone.
Wherein for each CPU, only in the audio signal of distribution to each audio zone of Audio Matrix main frame where it Carry out priority ratio compared with and distribution processing.
The method of work of the above-mentioned Public Address system of the present embodiment also comprises the following steps：
In Audio Matrix main frame where host CPU, microphone controller is connected by each microphone audio input port thereon Each microphone work station；The first controller connection host CPU in each microphone work station；Other do not pass through microphone controller from CPU Connect microphone work station.
Microphone work station sends audio zone by the first controller and distributes control instruction to host CPU, and host CPU receives above-mentioned After control instruction, above-mentioned control instruction is sent to other step by step from CPU, each CPU judges the audio where distribution to its respectively In the audio signal of matrix host computer correspondence audio zone, whether the audio signal priority of microphone work station output is highest, if so, Then each CPU controls the digital audio media matrix that it is connected to send the audio signal that microphone work station is exported to correspondence audio Area；Wherein distribution control instruction in audio zone includes distributing the audio signal that microphone work station is exported to the 1st to 256 audio zone The information of one of audio zone.In the present embodiment, operating personnel can be selected by the second touch-screen in microphone work station The audio signal for selecting the output of microphone work station to be distributed audio zone extremely, after the selection of the second touch-screen, the first controller Corresponding audio zone can be sent and distribute control instruction to host CPU, host CPU is received after above-mentioned control instruction, it is possible to known The whereabouts of the audio signal of microphone work station output.Specifically, each audio zone sequence number button is disposed with the second touch-screen, Such as Zone1, Zone2 ... Zone256, when the several audio zone sequence number buttons of selection some or certain, the first controller will be sent The audio signal that microphone control station is exported distributes the audio zone distribution control instruction to some or certain several audio zones to master CPU.And other are forwarded to step by step by host CPU from CPU, are realized and are played microphone work in some or certain several audio zone loudspeakers Stand output audio signal.
Gain and audio of the microphone work station by the first controller to the first digital control audio processing chip are adjusted Section, is sent to the volume of the audio signal of host CPU and audio with adjusting microphone work station；Microphone can be passed through in the present embodiment The second touch-screen in work station triggers gain and audio of first controller to the first digital control audio processing chip and carried out Regulation.Specifically, volume knob and audio regulation button are provided with the second touch-screen, by volume knob The operation for adjusting button with audio causes gain and audio of first controller for the first digital control audio processing chip to enter Row regulation.
Microphone work station sends master volume Regulate signal by the first controller and keynote imitates Regulate signal to host CPU, main CPU is received after the master volume Regulate signal and keynote effect Regulate signal of the transmission of the controller of microphone work station first, and instruction is step by step Other are sent to from CPU, each CPU is received after master volume Regulate signal and keynote effect Regulate signal, is connected by each CPU Digital audio media matrix is adjusted to exporting to the volume of the audio signal of each audio zone loudspeaker and audio.In this implementation In example, operating personnel can be triggered the first controller by the second touch-screen and send master volume Regulate signal and keynote effect regulation letter Number to host CPU, other are then transmitted to step by step by host CPU from CPU, and each CPU is according to receiving master volume Regulate signal and keynote Imitate Regulate signal, the digital control audio processing chip of correspondence the 3rd that microphone work station exports audio signal is passed through and/or The gain of the 4th digital control audio processing chip of correspondence and audio are adjusted, so as to realize that microphone work station is output to audio Volume and the audio regulation of the audio signal in area.Specifically, being provided with master volume regulation button and keynote in the second touch-screen Effect regulation button, causes the first controller to send master volume by the operation for adjusting button and keynote effect regulation button to master volume Regulate signal and keynote imitate Regulate signal to host CPU.
In each Audio Matrix main frame, the remote control panel of each audio zone selects local audio source by second controller The audio signal of output, the audio signal of local audio source output is output to far after the second digital control audio processing chip Range controller, is then sent to CPU by remote controllers；If now, the audio of audio zone where distribution to remote control panel In signal, the priority of the audio signal of the local audio source output of remote control panel is highest, then CPU controls DAB Mediamatrix exports the audio signal to the loudspeaker of audio zone where the remote control panel；In the present embodiment, for In each Audio Matrix main frame, operating personnel can select local audio source to want by the 3rd touch-screen in remote control panel The audio signal of transmission, after being selected by the 3rd touch-screen, second controller is that local audio source can be controlled to export corresponding sound Frequency signal.
In each Audio Matrix main frame, the remote control panel of each audio zone sends external source of sound by second controller and selected Signal is selected to CPU, CPU is received after the external source of sound selection signal of second controller transmission, judge distribution to remote control face In the audio signal of audio zone where plate, whether the priority of the audio signal of the external source of sound output of correspondence is highest, if so, then Control digital audio media matrix exports the audio signal of the external source of sound of correspondence to audio zone where the remote control panel Loudspeaker.In the present embodiment, each Audio Matrix main frame is directed to, operating personnel can select CPU to want by the 3rd touch-screen The external source of sound of the audio signal of reception, after being selected by the 3rd touch-screen, second controller can send corresponding external sound Source selection signal is to CPU.Specifically, the source of sound sequence number of external source of sound is disposed with the 3rd touch-screen, when some source of sound of selection During sequence number button, second controller will send the external source of sound selection signal of the external source of sound of selection source of sound sequence number correspondence extremely CPU。
In each Audio Matrix main frame, the remote control panel of each audio zone is digital control to second by second controller The gain of audio processing chip and audio are adjusted, and are sent with adjusting local audio source in remote control panel to CPU sound The volume and audio of frequency signal；In the present embodiment, each Audio Matrix main frame is directed to, operating personnel can pass through the 3rd touch-screen Gain and audio of the second controller to the second digital control audio processing chip is triggered to be adjusted.Specially：Touched the 3rd Touch and volume knob and audio regulation button are provided with screen, by the operation that button is adjusted to volume knob and audio So that gain and audio of the second controller for the second digital control audio processing chip are adjusted.
In each Audio Matrix main frame, the remote control panel of each audio zone sends master volume by second controller and adjusted Signal and keynote imitate Regulate signal to CPU, and CPU receives the master volume Regulate signal of remote control panel second controller transmission Afterwards, control digital audio media matrix to exporting to the volume of the audio signal of audio zone loudspeaker where remote control panel and Audio is adjusted；In the present embodiment, each Audio Matrix main frame is directed to, operating personnel can pass through the 3rd touch-screen triggering the Two controllers send master volume Regulate signal and keynote imitates Regulate signal to CPU, and then CPU is according to the master volume regulation received Signal and keynote effect Regulate signal are to corresponding 3rd digital control audio processing chip in DAB mediamatrix and/or accordingly The gain of 4th digital control audio processing chip and audio are adjusted, so as to realize digital audio media Output matrix to remote The audio signal volume of audio zone loudspeaker where process control panel and audio regulation.Specifically, being set in the 3rd touch-screen There is master volume to adjust button and keynote effect regulation button, made by the operation that button is adjusted to master volume regulation button and keynote effect Obtain second controller and send master volume Regulate signal and keynote effect Regulate signal to CPU.
In each Audio Matrix main frame, the external equipment connected by cpu port directly triggers CPU control DAB matchmakers Volume matrix is adjusted to exporting to the volume of the audio signal of each audio zone loudspeaker of the Audio Matrix main frame and audio；Pass through The external equipment of host CPU port connection directly triggers host CPU and the digital audio media matrix pair for controlling it to be connected from CPU Export to the volume of the audio signal of each audio zone loudspeaker and audio and be adjusted, i.e., set when host CPU port receives outside When standby volume and audio regulation trigger signal, while volume and audio regulation trigger signal are sent to other from CPU, it is main CPU controls the digital audio media matrix that it is connected to defeated with respectively from CPU respectively according to volume and audio regulation trigger signal Go out to the volume of the audio signal of each audio zone loudspeaker and audio and be adjusted.The external equipment of wherein each cpu port connection For the first touch-screen；In the present embodiment, in each Audio Matrix main frame, the first touch-screen that can be connected by each cpu port Audio signal to 8 audio zone loudspeakers of the Audio Matrix main frame where CPU carries out the regulation of volume and audio.Can be with The first touch-screen connected by host CPU port carries out the tune of volume and audio to the audio signal of 256 audio zone loudspeakers Section.
In each Audio Matrix main frame, the external equipment connected by cpu port triggers CPU to the Audio Matrix main frame The source of sound of audio zone is selected；The external equipment connected by host CPU port directly trigger host CPU and from CPU control pair The source of sound of each audio zone is selected；I.e. in the present embodiment, in each Audio Matrix main frame, it can be connected by each cpu port The first touch-screen connect is selected the source of sound of 8 audio zones of the Audio Matrix main frame where CPU.Master can also be passed through First touch-screen of cpu port connection, which is realized, to be selected the source of sound of 256 audio zones.
Wherein when the firefighting warning linkage device that host CPU is connected receives fire alarm trigger signal, fire alarm trigger signal is sent out Host CPU is delivered to, host CPU is when receiving the fire protection warning trigger signal that it is connected, the fire protection warning that control host CPU is connected Device reads the audio signal of fire alarm from the first storage card, and the fire protection warning device that host CPU is connected is read from the first storage card To after the audio signal of fire alarm, audio signal is sent to host CPU, host CPU is received after above-mentioned audio signal, gradually send to Other are from CPU；Or host CPU passes through its institute when receiving the fire alarm trigger signal that its fire-fighting link device connected is sent The trigger controller of connection gets the audio signal that external fire alarm source of sound is sent, while the trigger controller connected by it Fire alarm trigger signal is sent to outside.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by above-described embodiment of the invention Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification, Equivalent substitute mode is should be, is included within protection scope of the present invention.

Claims (12)

1. a kind of Audio Matrix main frame, it is characterised in that including CPU, digital audio media matrix, microphone controller, fire-fighting report Alert device, fire-fighting link device and trigger controller；
The microphone controller is provided with multiple microphone audio input ports, and the microphone controller connects CPU, by microphone control The audio signal of device audio input port input is sent to CPU；
The fire protection warning device connects the first storage card of the audio signal for the fire alarm that is stored with；The fire protection warning device connects CPU, Control fire protection warning device to read audio signal from the first storage card by CPU, and the audio signal of reading is sent to CPU；
The fire-fighting link device is provided with multiple fire alarm trigger signal input ports, and the fire-fighting link device connects CPU, will received To fire alarm trigger signal be sent to CPU, CPU when receiving fire alarm trigger signal, control fire protection warning device from first storage The audio signal of fire alarm is read in card；
The trigger controller connect band does the external timer source of sound of triggering, and the trigger controller connects CPU, and CPU leads to Cross trigger controller and receive the doing after trigger signal of external timer source of sound, external timer is received by trigger controller The audio signal that source of sound is sent；
The CPU is provided with multiple external audio input ports, and external source of sound is connected by external audio input port, receives outer Put the audio signal of source of sound transmission；
The CPU connections digital audio media matrix, CPU is being received from microphone controller, fire protection warning device, external sound After source, the audio signal of trigger controller, the whereabouts of each road audio signal is known, Ji Ge roads audio signal to be distributed sound extremely Frequency area；Each audio zone is directed to simultaneously, comparing will distribute to the priority of each road audio signal of same audio zone, then control Digital audio media matrix will distribute to the audio signal of the highest priority of same audio zone and be output to correspondence audio zone.
2. Audio Matrix main frame according to claim 1, it is characterised in that the trigger controller connects external fire alarm sound Source, CPU gets external fire alarm source of sound when receiving the fire alarm trigger signal of fire-fighting link device transmission by trigger controller The audio signal of transmission, while sending fire alarm trigger signal to outside by trigger controller；The CPU is connected with cuts control by force Device, needs equipment out of service by cutting controller by force and connecting when fire alarm occurs, the transmission of fire-fighting link device is received in CPU During fire alarm trigger signal, send a control signal to and cut controller by force, need to stop when controlling fire alarm to occur by cutting controller by force The equipment of operation is out of service；
The CPU is connected with the first touch-screen.
3. Audio Matrix main frame according to claim 1, it is characterised in that the microphone controller passes through each words thereon Cylinder audio input port connects each microphone work station；
The microphone work station includes microphone, the first controller, the first digital control audio processing chip and the second touch-screen, The audio signal output end of the words microphone connects the input of the first digital control audio processing chip, first numeral The output end of audio processing chip is controlled to connect the microphone audio input port of microphone controller；The first digital control audio Process chip connects the first controller, the gain for the first digital control audio processing chip and audio by the first controller It is adjusted；First controller connects CPU, and second touch-screen connects the first controller.
4. Audio Matrix main frame according to claim 1, it is characterised in that also including remote controllers, the long-range control Device processed is provided with multiple remote audio signal input ports and multiple remote audio signal output ports；The remote controllers lead to Each remote audio signal input port connection crossed thereon is arranged on each remote control panel of each audio zone, long-range for receiving The audio signal that control panel is sent；The remote controllers connect CPU, pass through each remote audio signal output port thereon The audio signal that it is received from each remote control panel sends CPU to；In the remote controllers, per several remote audios Signal input port shares a remote audio signal output port, wherein connection belongs to same audio zone remote control panel Each remote audio signal input port shares a remote audio signal output port, i.e., the remote control panel of same audio zone Send to the audio signal of remote controllers and exported by the same remote audio signal output port in remote controllers Into CPU, CPU is received after the audio signal of remote controllers transmission, is sent to digital audio media matrix, then basis should The corresponding audio signal of two priority classes digital audio media Output matrix of audio signal is to each audio zone；
Each remote control panel includes second controller, local audio source, the second digital control audio processing chip and the 3rd Touch-screen；The second controller connects CPU, and the 3rd touch-screen connects second controller；
The second controller connects local audio source, for the audio signal for selecting local audio source to export；Second number The input connection local audio source of word control audio processing chip, output end connects remote controllers wherein by signal wire One remote audio signal input port；The second controller connects the second digital control audio processing chip, for second Digital control audio processing chip gain and the regulation of audio.
5. Audio Matrix main frame according to claim 4, it is characterised in that the digital audio media matrix includes 28 Audio signal input end, wherein, the 1st to 8 audio signal input end input microphone controller is sent to CPU 8 tunnel audio letters Number, the 9th to 16 audio signal input end inputs 8 external sources of sound and sent to CPU 8 tunnel audio signals, the 17th audio letter Number input input fire protection warning device is sent to CPU audio signal, and the 18th audio signal input end inputs trigger controller Send to the CPU audio signal received from external timer source of sound, the 19th audio signal input end input triggering control Device is sent to the CPU audio signal received from external fire alarm source of sound；20th audio signal input end input is deposited from second Card storage or outside USB flash disk are read to CPU audio signal；21st to 28 audio signal input end input remote controllers are 8 remote The audio signal of journey audio signal output end output；
The digital audio media matrix includes first selector, second selector and third selector, the first choice Qi Wei 40 selects on tunnel No. 20 selectors, and the second selector is that No. 8 selectors are selected on 28 tunnels, and the third selector is that 36 tunnels select 1 Road selector；
1st to 20 audio signal input end of the digital audio media matrix respectively by each 3rd digital control audio at Manage 20 inputs that chip connects first selector；20 output ends correspondence connection second selector of the first selector Wherein 20 inputs, second selector wherein 8 inputs correspondence input is inputted by remote controllers to CPU 8 tunnels Audio signal；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audio processing chips, 8 4th digital control audio processing chip is connected respectively the loudspeaker front-end power amplifier of 8 audio zones；Described 3rd 20 output ends of the wherein 20 inputs correspondence connection first selector of selector, wherein 8 inputs of third selector End correspondence input is inputted to CPU 8 tunnel audio signals by remote controllers, and wherein 8 inputs of third selector are right respectively The output end of 8 the 4th digital control audio processing chips should be connected, the output end of third selector is amplified by digital power Device connects local loudspeaker, and monitor function is realized by local loudspeaker；
The first selector, second selector and third selector address end connect CPU respectively, CPU according to first selector, The priority of second selector and each input audio signal of third selector, control first selector, second selector and the 3rd Selector output end exports corresponding audio signal；
CPU is all connected with each 4th digital control audio processing chip on each 3rd digital control audio processing chip, passes through CPU Adjust the gain on each 3rd digital control audio processing chip with each 4th digital control audio processing chip and audio.
6. the method for work of the Audio Matrix main frame described in a kind of claim 1, it is characterised in that step is as follows：
According to the source of each road audio signal, input is set in CPU to the priority of wherein each road audio signal；
When microphone controller receives audio signal, audio signal is sent to CPU；
When firefighting warning linkage device receives fire alarm trigger signal, fire alarm trigger signal is sent to CPU, CPU and received During fire protection warning trigger signal, control fire protection warning device reads the audio signal of fire alarm, fire protection warning device from the first storage card Read from the first storage card after the audio signal of fire alarm, audio signal is sent to CPU；
After trigger controller, which receives band, does the timing pip of external timer source of sound of triggering, CPU passes through triggering Controller reads audio signal from external timer source of sound；
CPU knows the whereabouts of each road audio signal after each road audio signal is received, Ji Ge roads audio signal to be distributed to Audio zone；Each audio zone is directed to simultaneously, comparing will distribute to the priority of each road audio signal of same audio zone；Then Control digital audio media matrix will distribute to the audio signal of the highest priority of same audio zone and be output to correspondence audio zone.
7. the method for work of Audio Matrix main frame according to claim 6, it is characterised in that further comprising the steps of：
Microphone work station sends audio zone by the first controller and distributes control instruction to CPU, and CPU receives above-mentioned control instruction Afterwards, distribution is judged into the audio signal of correspondence audio zone, and whether the audio signal priority of microphone work station output is highest, If so, then control digital audio media matrix sends the audio signal that microphone work station is exported to correspondence audio zone；
Gain and audio of the microphone work station by the first controller to the first digital control audio processing chip are adjusted, with Regulation microphone work station is sent to the volume of CPU audio signal and audio；
Microphone work station sends master volume Regulate signal and keynote by the first controller imitates Regulate signal and receives to CPU, CPU After master volume Regulate signal and keynote the effect Regulate signal that the controller of microphone work station first is sent, pass through digital audio media square Battle array is adjusted to exporting to the volume of the audio signal of respective audio area loudspeaker and audio；
The remote control panel of each audio zone selects the audio signal that local audio source is exported, local audio by second controller The audio signal of source output is output to remote controllers after the second digital control audio processing chip, then by remote control Device is sent to CPU；If now, in the audio signal of audio zone where distribution to remote control panel, the sheet of remote control panel The priority of the audio signal of ground audio-source output is highest, then CPU controls digital audio media matrix that the audio signal is defeated Go out to the loudspeaker of audio zone where the remote control panel；
Remote control panel sends external source of sound selection signal to CPU by second controller, and CPU receives second controller hair After the external source of sound selection signal sent, in the audio signal of audio zone where judging distribution to remote control panel, correspondence is external Whether the priority of the audio signal of source of sound output is highest, if so, then control digital audio media matrix will the external sound of correspondence The audio signal in source is exported to the loudspeaker of audio zone where the remote control panel；
Gain and audio of the remote control panel by second controller to the second digital control audio processing chip are adjusted, Sent with adjusting local audio source in remote control panel to the volume of CPU audio signal and audio；
Remote control panel sends master volume Regulate signal by second controller and keynote imitates Regulate signal to CPU, CPU reception After master volume Regulate signal and keynote the effect Regulate signal sent to remote control panel second controller, DAB matchmaker is controlled The volume and audio that export to the audio signal of audio zone loudspeaker where remote control panel are adjusted volume matrix；
The external equipment connected by CPU port directly triggers CPU and controls digital audio media matrix to exporting to each audio The volume and audio of the audio signal of area's loudspeaker are adjusted；The external equipment connected by cpu port triggers CPU to each The source of sound of audio zone is selected；
Wherein when firefighting warning linkage device receives fire alarm trigger signal, fire alarm trigger signal is sent to CPU, CPU and connect When receiving fire protection warning trigger signal, control fire protection warning device reads the audio signal of fire alarm, fire-fighting report from the first storage card Alert device is read after the audio signal of fire alarm from the first storage card, and audio signal is sent into CPU；Or CPU is being received During the fire alarm trigger signal that fire-fighting link device is sent, the audio letter that external fire alarm source of sound is sent is got by trigger controller Number, while sending fire alarm trigger signal to outside by trigger controller.
8. the method for work of the Audio Matrix main frame according to claim 6 or 7, it is characterised in that the CPU receives 28 tunnels Audio signal, the source of each road audio signal is as follows：Connected from microphone controller 8 of wherein the 1st to 8 tunnel audio signal Microphone work station, the 9th to 16 tunnel audio signal comes from fire protection warning device, the 18th from 8 external sources of sound, the 17th tunnel audio signal The external timer source of sound that road audio signal is connected from trigger controller, the 19th tunnel audio signal comes from trigger controller institute The external fire alarm source of sound of connection, the 20th tunnel audio signal is from CPU the second storage cards connected or outside USB flash disk, the 21st to 28 The remote control panel for 8 audio zones that road audio signal is connected from remote controllers；
Wherein 1 or several microphone work stations are used as artificial urgent broadcast work station, remaining microphone work in 8 microphone work stations It is common broadcast work station to make station, and the audio signal priority level initializing of artificial urgent broadcast work station output is highest；From outer The priority level initializing for putting the tunnel audio signal of fire alarm source of sound the 19th or the 17th tunnel audio signal from fire protection warning device is second；Commonly The priority level initializing of the audio signal of broadcasting station output is the 3rd；Carry out the 18th tunnel audio of the external timer source of sound of self-timing The priority level initializing of signal is the 4th；21st to 28 tunnel audio signal of the remote control panel from 8 audio zones it is preferential Level is set as the 5th；The priority level initializing of the 9th to the 16 tunnel audio signal from external timer source of sound is the 6th；From second The priority level initializing of 20th tunnel audio signal of storage card or outside USB flash disk is the 7th；Wherein priority is in the more than 3rd road sounds There is certain priority in frequency signal；I.e. when the audio signal of distribution to certain audio zone includes the multichannel that priority is in the 3rd During audio signal, now CPU selects priority in multiple signals to arrange most preceding audio signal all the way；Priority is in second There is certain priority in the 19th tunnel audio signal and the 17th tunnel audio signal；
The CPU is linked into Ethernet, connects remote computer by Ethernet, the remote computer is by wherein configuring Software CPU is monitored, the priority of CPU Zhong Ge roads audio signal is set, controls CPU selections to receive corresponding Audio signal, master volume Regulate signal and audio Regulate signal are sent to CPU.
9. a kind of Public Address system, it is characterised in that including the Audio Matrix any one of multiple Claims 1-4 CPU in main frame, each Audio Matrix main frame is cascade connection, and wherein first order CPU host CPUs, other CPU at different levels are from CPU； The host CPU after each road audio signal is received, by each road audio signal for receiving of correspondence send to step by step each from CPU；Now each CPU knows the whereabouts of received each road audio signal from host CPU, and Ji Ge roads audio signal to be distributed Audio zone extremely；Each audio zone of Audio Matrix main frame where being directed to each CPU, comparing will distribute to each road of same audio zone The priority of audio signal, then controls digital audio media matrix to distribute to the audio of the highest priority of same audio zone Signal output to correspondence audio zone.
10. Public Address system according to claim 9, it is characterised in that including any in 32 Claims 1-4 Corresponding 32 CPU are cascade connection in Audio Matrix main frame described in, i.e., 32 Audio Matrix main frames；Wherein each audio Matrix host computer includes 8 audio zones；
In each Audio Matrix main frame, digital audio media matrix includes 28 audio signal input ends, wherein, the 1st to 8 audio Signal input part input microphone controller is sent to CPU 8 tunnel audio signals, and the 9th to 16 audio signal input end inputs 8 External source of sound is sent to CPU 8 tunnel audio signals, and the 17th audio signal input end input fire protection warning device is sent to CPU's Audio signal, the 18th audio signal input end input trigger controller sends to CPU from external timer source of sound and received Audio signal, the 19th audio signal input end input trigger controller, which is sent to CPU from external fire alarm source of sound, to be received Audio signal；20th audio signal input end input is read to CPU audio signal from the second storage card or outside USB flash disk； The audio signal of 21st to 28 audio signal input end input 8 remote audio signal output end output of remote controllers；
In each Audio Matrix main frame, digital audio media matrix include first selector, second selector, third selector and Third selector；The first selector is that No. 20 selectors are selected on 40 tunnels, and the second selector is that No. 8 selectors are selected on 28 tunnels, The third selector is that No. 1 selector is selected on 36 tunnels；
In each Audio Matrix main frame, when CPU therein is host CPU, the 1st to 20 audio of the digital audio media matrix Signal input part connects wherein 20 inputs of first selector by each 3rd digital control audio processing chip respectively；Institute State wherein 20 inputs of 20 output ends correspondence connection second selector of first selector；When CPU therein is from CPU When, the 1st to 20 audio signal input end of the digital audio media matrix respectively by each 3rd digital control audio at Manage wherein 20 inputs that chip connects first selector；Another 20 inputs input upper level CPU of first selector is passed Deliver to this grade of CPU 20 tunnel audio signals, wherein 20 of 20 output ends correspondence connection second selector of first selector Input；
In each Audio Matrix, the wherein 8 inputs correspondence input of second selector is inputted to CPU 8 tunnels by remote controllers Audio signal；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audio processing chips, 8 4th digital control audio processing chip is connected respectively the loudspeaker front-end power amplifier of 8 audio zones；Described 3rd 20 output ends of the wherein 20 inputs correspondence connection first selector of selector, wherein 8 inputs of third selector End correspondence input is inputted to CPU 8 tunnel audio signals by remote controllers, and wherein 8 inputs of third selector are right respectively The output end of 8 the 4th digital control audio processing chips should be connected, the output end of third selector is amplified by digital power Device connects local loudspeaker, and monitor function is realized by local loudspeaker；
In each Audio Matrix, the first selector, second selector and third selector address end connect CPU, CPU roots respectively According to the priority of first selector, second selector and each input audio signal of third selector, control first selector, second Selector and third selector output end export corresponding audio signal；
In each Audio Matrix, connect with each 4th digital control audio processing chip on each 3rd digital control audio processing chip CPU is met, the increasing on each 3rd digital control audio processing chip with each 4th digital control audio processing chip is adjusted by CPU Benefit and audio.
11. the method for work of the Public Address system described in a kind of claim 9, it is characterised in that step is as follows：
According to the source of each road audio signal, set input preferential to wherein each road audio signal in each CPU of cascade Level；
In the Audio Matrix main frame where host CPU, when the microphone controller that host CPU is connected receives audio signal, by sound Frequency signal is sent to host CPU；When the firefighting warning linkage device that host CPU is connected receives fire alarm trigger signal, fire alarm is triggered Signal is sent to host CPU, and host CPU is when receiving the fire protection warning trigger signal that it is connected, and what control host CPU was connected disappears Anti- alarm reads the audio signal of fire alarm from the first storage card, and the fire protection warning device that host CPU is connected is from the first storage card In read after the audio signal of fire alarm, audio signal is sent to host CPU；The trigger controller that host CPU is connected is received Band is done after the timing pip of external timer source of sound of triggering, and the trigger controller that host CPU is connected through is from external Timer source of sound reads audio signal；
Each road audio signal is sent to each from CPU and each equal from CPU by host CPU step by step after each road audio signal is received By getting the whereabouts of each road audio signal at host CPU, Ji Ge roads audio signal to be distributed audio zone extremely；It is directed to each Each audio zone of Audio Matrix main frame where CPU, comparing will distribute to the priority of each road audio signal of same audio zone；So Each CPU controls the digital audio media matrix that it is connected to distribute to the audio signal of the highest priority of same audio zone afterwards It is output to correspondence audio zone.
12. the method for work of Public Address system according to claim 11, it is characterised in that also comprise the following steps：
In Audio Matrix main frame where host CPU, microphone controller connects each words by each microphone audio input port thereon Cylinder work station；The first controller connection host CPU in each microphone work station；
Microphone work station sends audio zone by the first controller and distributes control instruction to host CPU, and host CPU receives above-mentioned control After instruction, above-mentioned control instruction is sent to other step by step from CPU, each CPU judges the Audio Matrix where distribution to its respectively In the audio signal of main frame correspondence audio zone, whether the audio signal priority of microphone work station output is highest, if so, then each CPU controls the digital audio media matrix that it is connected to send the audio signal that microphone work station is exported to correspondence audio zone；
Gain and audio of the microphone work station by the first controller to the first digital control audio processing chip are adjusted, with Regulation microphone work station is sent to the volume of the audio signal of host CPU and audio；
Microphone work station sends master volume Regulate signal by the first controller and keynote imitates Regulate signal to host CPU, and host CPU connects After the master volume Regulate signal and keynote effect Regulate signal that receive the transmission of the controller of microphone work station first, instruction is sent to step by step Other are from CPU, and each CPU is received after master volume Regulate signal and keynote effect Regulate signal, the digital sound connected by each CPU Frequency mediamatrix is adjusted to exporting to the volume of the audio signal of respective audio area loudspeaker and audio；
In each Audio Matrix main frame, the remote control panel of each audio zone selects local audio source to export by second controller Audio signal, local audio source output audio signal be output to long-range control after the second digital control audio processing chip Device processed, is then sent to CPU by remote controllers；If now, the audio signal of audio zone where distribution to remote control panel In, the priority of the audio signal of the local audio source output of remote control panel is highest, then CPU controls digital audio media Matrix exports the audio signal to the loudspeaker of audio zone where the remote control panel；Operating personnel can in the present embodiment To select the local audio source audio signal to be sent by the 3rd touch-screen in remote control panel, touched by the 3rd After screen selection, second controller is that local audio source can be controlled to export corresponding audio signal；
In each Audio Matrix main frame, the remote control panel of each audio zone sends external source of sound selection by second controller to be believed Number to CPU, CPU is received after the external source of sound selection signal of second controller transmission, judges distribution to remote control panel institute In the audio signal of audio zone, whether the priority of the audio signal of the external source of sound output of correspondence is highest, if so, then controlling The audio signal of the external source of sound of correspondence is exported raising one's voice to audio zone where the remote control panel by digital audio media matrix Device；
In each Audio Matrix main frame, the remote control panel of each audio zone is by second controller to the second digital control audio The gain of process chip and audio are adjusted, and are sent with adjusting local audio source in remote control panel to CPU audio letter Number volume and audio；
In each Audio Matrix main frame, the remote control panel of each audio zone sends master volume Regulate signal by second controller Regulate signal is imitated to CPU with keynote, and CPU is received after the master volume Regulate signal of remote control panel second controller transmission, Control digital audio media matrix is to exporting to the volume and sound of the audio signal of audio zone loudspeaker where remote control panel Effect is adjusted；
In each Audio Matrix main frame, the external equipment connected by cpu port directly triggers CPU control digital audio media squares Battle array is adjusted to exporting to the volume of the audio signal of each audio zone loudspeaker of the Audio Matrix main frame and audio；Pass through master The external equipment of cpu port connection directly triggers host CPU and controls the digital audio media matrix that it is connected to defeated from CPU Go out to the volume of the audio signal of each audio zone loudspeaker and audio and be adjusted；
In each Audio Matrix main frame, the external equipment connected by cpu port triggers audios of the CPU to the Audio Matrix main frame The source of sound in area is selected；The external equipment connected by host CPU port directly triggers host CPU and from CPU controls to each The source of sound of audio zone is selected；
Wherein when host CPU connect firefighting warning linkage device receive fire alarm trigger signal when, by fire alarm trigger signal send to Host CPU, host CPU when receiving the fire protection warning trigger signal that it is connected, the fire protection warning device that is connected of control host CPU from The audio signal of fire alarm is read in first storage card, the fire protection warning device that host CPU is connected reads fire from the first storage card After alert audio signal, audio signal is sent to host CPU；Or host CPU is receiving its fire-fighting link device hair connected During the fire alarm trigger signal sent, the audio signal that external fire alarm source of sound is sent is got by its trigger controller connected, The trigger controller connected simultaneously by it sends fire alarm trigger signal to outside.
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