CN109067434A - Via the synchronization Public Address System of power line transmission digital audio-frequency data - Google Patents
Via the synchronization Public Address System of power line transmission digital audio-frequency data Download PDFInfo
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- CN109067434A CN109067434A CN201811088573.9A CN201811088573A CN109067434A CN 109067434 A CN109067434 A CN 109067434A CN 201811088573 A CN201811088573 A CN 201811088573A CN 109067434 A CN109067434 A CN 109067434A
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- China
- Prior art keywords
- audio
- power line
- package
- playing device
- public address
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/16—Vocoder architecture
- G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
Abstract
The present invention is a kind of synchronization Public Address System via power line transmission digital audio-frequency data, the synchronization Public Address System system includes a sound source and a plurality of playing devices, it and is interconnected with regional power circuit each other, it is mainly able to receive analog-to-digital audio signal, Internet audio signal, digital audio signal etc. by sound source, via the power line in regional space, by message, the synchronous driving in a manner of broadcasting packages provides each space equipped with playing device and is synchronized the audio that broadcasting sound source is transmitted to each playing device.
Description
Technical field
The present invention is a kind of synchronization Public Address System via power line transmission digital audio-frequency data, and espespecially one kind can be via electricity
The line of force transmits the audio of broadcasting packages to each playing device, and the audio played is synchronized output.
Background technique
Internet brings the convenience of this generation, either housed device, vehicular equipment, accompanied electronic equipment etc., all may be used
To transmit, play via internet, remotely starting, in real time monitoring etc., allow the utilization rate of internet to be promoted.
However, the use of internet conveniently property, relatively broad, and wireless network is covered with the utilization rate of wireless network
Though convenience is stressed, but still having undisputable fact is exactly to obstruct problem, in a space, as long as one of metope will be wireless
Signal stops, signal is made to reduce or interdict signal etc., in addition there is one of metope incessantly in a space.
It is just dialled and is put with current convenient message, i.e., wireless network is penetrated using audio devices, by audio transmission to sound equipment system
System plays, when as with one-to-one transmission if without it is synchronous whether the problem of, then can be because when being transmitted with a pair of of multiple groups sound system
For many of space obstacle, signal is stopped, keeps the sound system institute for being distributed in different places in a space received
Audio signal is unstable, and cause sound system can not synchronously playing audio frequency missing.
Edge this, applicant proposes a kind of transmission through power line as message, makes each small space in a space all
The efficiency that message is played simultaneously can be reached, have the missing for being blocked blocking to improve wireless signal.
Summary of the invention
The present invention will need the audio transmitted via sound source mainly by zonal power line as transmission domain
After reception, power line transmission to each playing device of penetrating region property is played simultaneously, and can avoid penetrating transmitting radio signals
When, the power of signal allows efficiency when transmission to have interval, and is unable to reach message and is synchronized broadcasting, while making via power line
Message transmission operation makes transmitted in both directions and feedback between sound source and playing device more accurate and stable.One kind is via electric power
The synchronization Public Address System of line transmission digital audio-frequency data a characterized by comprising sound source, comprising: audio input group
Part, first microprocessor component, the first audio processing components and the first power line Digital Transmission component, are connect by audio input component
External audio is received, audio is recombinated through first microprocessor component and is numbered, via the first audio processing components by audio compression
Package is made, is exported audio package to playing device via power line by the first power line Digital Transmission component；
A plurality of playing devices, comprising: the second power line Digital Transmission component, the second micro process component, at the second audio
Component, loudspeaking component and microphone assembly are managed, the audio package of sound source transmission is received by the second control assembly, it is micro- through second
Processing component detects audio number, decompresses audio package via the second audio processing components, does audio through loudspeaking component
It plays；
Sound source via regional space power line by message in a manner of broadcasting packages synchronous driving to each broadcasting
Device provides playing device set by zonal each space and is synchronized the audio that broadcasting sound source is exported.
Detailed description of the invention
Fig. 1 is application schematic diagram of the present invention via the synchronization Public Address System of power line transmission digital audio-frequency data.
Fig. 2 is audio error differentiation signal of the present invention via the synchronization Public Address System of power line transmission digital audio-frequency data
Figure.
Fig. 3 is that the present invention is wrong via the audio of the playing device of the synchronization Public Address System of power line transmission digital audio-frequency data
Judge other process by accident.
Wherein: 1, synchronous Public Address System, 10, sound source, 100, audio input component, 101, first microprocessor group
Part, the 102, first audio processing components, the 103, first power line Digital Transmission component, 11, playing device, the 110, second power line
Digital Transmission component, the 111, second micro process component, the 112, second audio processing components, 113, loudspeaking component 114, microphone group
Part, 20, analog-to-digital audio signal, 21, Internet audio signal, 22, digital audio signal, G01~G04, audio error
Differentiate process.
Specific embodiment
As shown in Figures 1 and 2, the present invention is a kind of synchronization Public Address System via power line transmission digital audio-frequency data,
Synchronous 1 system of Public Address System includes: a sound source 10 and a plurality of playing devices 11, and sound source 10 is via regional space
Power line by message, the synchronous driving in a manner of broadcasting packages provides set by zonal each space to each playing device 11
The playing device 11 set, which is synchronized, plays the audio that sound source 10 is exported；
Wherein, sound source 10, comprising: audio input component 100, first microprocessor component 101, at the first audio
Component 102 and the first power line Digital Transmission component 103 are managed, which receives external audio, and audio is led
To first microprocessor component 101, which receives the audio of audio input component 100, by audio weight
Group #, the audio that number is completed are oriented to the first audio processing components 102, which receives first
Package is made in the numbered message compression of the tool of microprocessor components 101, and is oriented to the first power line Digital Transmission component 103,
The first power line Digital Transmission component 103 receives the first audio processing components 102 and compresses the message package completed, via electricity
The line of force is exported to playing device 11.
So, sound source 10 can pass through the transmission suspend mode of the first power line Digital Transmission component 103 and wake up signal to broadcasting
Device 11 enables playing device 11 to make hesitation or shutdown under the demand that no message exports, and when there is message input,
It then can the progress message output broadcasting of actuation in real time.
A plurality of playing devices 11 include: the second power line Digital Transmission component 110, the second micro process component 111, second
Audio processing components 112, loudspeaking component 113 and microphone assembly 114, the second power line Digital Transmission component 110 receive sound
Message package derived from 10 institute of source device, and audio package is oriented to the second microprocessor components 111, the second microprocessor group
Part 111 receives the audio package of the second power line Digital Transmission component 110, and audio package is done the detection of audio serial number, will test
The audio package of completion is oriented to the second audio processing components 112, which receives the second microprocessor group
Part 111 detects the message package that serial number is completed, and does each message package decompression, and message package is sorted, and is oriented to
Loudspeaking component 113 plays, which receives doing with the message package of decompression for the second audio processing components 112
It plays.
And the microphone assembly 114 provides detection whether playing device 11 does self loudspeaking, the microphone assembly 114 with
The connection of second audio processing components 112, when self detection of playing device 11, which plays testing audio, by wheat
The recording of gram wind component 114 receives testing audio, which then carries out broadcast and compare with recording, and judges
Whether broadcast is normal or has exception.
So, the sound source 10 be able to receive external audio play out, wherein the external audio includes: analog-to-digital
Audio signal 20, Internet audio signal 21, digital audio signal 22 etc., each audio execute audio via sound source 10 and compile
After serial number and audio compression, form message package, then via regional space power line by audio data synchronous driving to each
A playing device 11 provides each space equipped with playing device 11 and is synchronized the audio that broadcasting sound source 10 is transmitted.
And how to reach message and broadcast synchronization, when playing device 11 receives the audio package of sound source 10, which is connect
It is play time that the gauge outfit of receipts, which has a time field, in the cooperation set current time, and has been calculated between sowing time and mesh
The real time interval of preceding time, then automatically rise sowing time between before first broadcast it is N number of it is mute after, and rise sowing time between simultaneously each
Playing device 11 plays out, and has reached and broadcast synchronization.
And how to reach message and play synchronization, because each playing device 11 has time deviation slightly, make broadcasting speed
There is small difference, when playing device 11 receives audio package, then the gauge outfit has a time field to indicate that the package should be defeated
Time out, and the time of estimated broadcasting is calculated at regular intervals, which is to combine wait broadcast the current time
The audio output time value for the audio quantity put, according to the estimated audio output time value played and audio should export when
Between difference adjust broadcasting speed, make to reach broadcasting and synchronize.
As shown in Figures 1 and 3, the audio error of playing device of the invention differentiates that process, step include:
G01 step A: the playing device 11 receives sound source 10 through the second power line digital output module 110 and is transmitted
Audio package.
G02 step B: the second microprocessor components 111 through playing device 11 detect audio package serial number.
G03 step C: comparing new received message package serial number and whether previous message package serial number is continuous.
G030 step C1: transmission signal to sound source 10 require retransfer the discontinuous person serial number package to play
Device 11.
G04 step D: unziping it through the second audio processing components 112, sequentially arranges message package and waits, and according to
Sequence is exported to loudspeaking component 113.
So, when the packet loss or serial number of the message with serial number are discontinuous, which compares discontinuous through serial number
Person, then enter G030 step C1 transmit signal to sound source 10 require retransfer the discontinuous person serial number package to play
Device 11, and the serial number package of the discontinuous person can be broadcasting packages or unicast package as transmission package, then carry out serial number ratio
To, decompression, play etc. sequence.
Claims (8)
1. a kind of synchronization Public Address System via power line transmission digital audio-frequency data characterized by comprising
One sound source, comprising: audio input component, first microprocessor component, the first audio processing components and the first electric power
Line number word transmission assembly, receives external audio by audio input component, recombinates audio through first microprocessor component and numbers,
Package is made in audio compression via the first audio processing components, by the first power line Digital Transmission component by audio package via
Power line is exported to playing device；
A plurality of playing devices, comprising: the second power line Digital Transmission component, the second micro process component, the second audio processing group
Part, loudspeaking component and microphone assembly are received the audio package of sound source transmission by the second control assembly, through the second micro process
Component detection audio number, audio package is decompressed, play audio through loudspeaking component via the second audio processing components；
Sound source via regional space power line by message in a manner of broadcasting packages synchronous driving to each playing device,
Playing device set by zonal each space is provided and is synchronized the audio that broadcasting sound source is exported.
2. as described in claim 1 via the synchronization Public Address System of power line transmission digital audio-frequency data, which is characterized in that outer
Portion's audio is analog-to-digital audio signal or Internet audio signal or digital audio signal.
3. as described in claim 1 via the synchronization Public Address System of power line transmission digital audio-frequency data, which is characterized in that broadcast
It puts device and self detection is provided, testing audio is broadcasted by loudspeaking component, and recorded by microphone assembly, broadcast for playing device comparison
Sound and recording whether normal actuation, reach self detection maintenance.
4. as described in claim 1 via the synchronization Public Address System of power line transmission digital audio-frequency data, which is characterized in that sound
Source device is through the transmission suspend mode of power line Digital Transmission component and wakes up signal to playing device.
5. as described in claim 1 via the synchronization Public Address System of power line transmission digital audio-frequency data, which is characterized in that same
There is step Public Address System audio to broadcast synchronization, and when playing device receives the audio package of sound source, the received gauge outfit of institute has
One time field is play time, in the cooperation set current time, and has calculated the reality between sowing time with the current time
Border time interval, then automatically rise sowing time between before first broadcast it is N number of it is mute after, and rise sowing time between simultaneously each playing device into
Row plays.
6. as described in claim 1 via the synchronization Public Address System of power line transmission digital audio-frequency data, which is characterized in that same
It walks Public Address System there is audio to play and synchronize, because each playing device has time deviation slightly, make broadcasting speed also and have and is small
Difference, when playing device receives audio package, then time that gauge outfit has time field instruction package that should export, and every
The estimated time played is calculated every a period of time, it is contemplated that the time of broadcasting is the sound for the current time combining audio quantity to be played
Frequency output time value, the difference for the time that the audio output time value according to estimated broadcasting should be exported with audio are broadcast to adjust
Put speed.
7. as described in claim 1 via the synchronization Public Address System of power line transmission digital audio-frequency data, which is characterized in that same
The audio error discriminating step of playing device for walking Public Address System includes:
Step A: playing device receives the audio package that sound source is transmitted through the second control assembly；
Step B: the second microprocessor components through playing device detect audio package serial number；
Step C: comparing new received message package serial number and whether previous message package serial number is continuous；
Step D: unziping it through the second audio processing components, sequentially arranges message package and waits, and sequentially exports to raising
Sound component.
8. further including step C1 as claimed in claim 7 via the synchronization Public Address System of power line transmission digital audio-frequency data:
Transmission signal to sound source require retransfer the discontinuous person serial number package to playing device, step C is compared through serial number
Discontinuous person, then transmitting the retransfer serial number package of the discontinuous person of signal to sound source requirement can be broadcasting packages or list
Package is broadcast to playing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088573.9A CN109067434A (en) | 2018-09-18 | 2018-09-18 | Via the synchronization Public Address System of power line transmission digital audio-frequency data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088573.9A CN109067434A (en) | 2018-09-18 | 2018-09-18 | Via the synchronization Public Address System of power line transmission digital audio-frequency data |
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| Publication Number | Publication Date |
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| CN109067434A true CN109067434A (en) | 2018-12-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811088573.9A Pending CN109067434A (en) | 2018-09-18 | 2018-09-18 | Via the synchronization Public Address System of power line transmission digital audio-frequency data |
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| CN105592568A (en) * | 2015-12-22 | 2016-05-18 | Tcl通力电子（惠州）有限公司 | Audio playing method and system |
| US20170286051A1 (en) * | 2016-03-31 | 2017-10-05 | Bose Corporation | Clock Synchronization for Audio Playback Devices |
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| CN108449630A (en) * | 2018-04-09 | 2018-08-24 | 歌尔股份有限公司 | Audio synchronization method and system |
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- 2018-09-18 CN CN201811088573.9A patent/CN109067434A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741700A (en) * | 2008-11-13 | 2010-06-16 | 泰金宝电通股份有限公司 | Music playing control system, multifunctional music playing devices and control method thereof |
| CN103197616A (en) * | 2013-01-09 | 2013-07-10 | 北京卓越信通电子股份有限公司 | Player terminal applied to audio remote access and play system |
| CN103428535A (en) * | 2013-08-02 | 2013-12-04 | 汎惪股份有限公司 | Real-time video transmission method, real-time video transmission and synchronous playing method and system and sending unit for real-time video transmission method |
| CN105592568A (en) * | 2015-12-22 | 2016-05-18 | Tcl通力电子（惠州）有限公司 | Audio playing method and system |
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Application publication date: 20181221 |