CN207766285U - Digital conference system based on Streaming Media real-time bus - Google Patents
Digital conference system based on Streaming Media real-time bus Download PDFInfo
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- CN207766285U CN207766285U CN201820184631.7U CN201820184631U CN207766285U CN 207766285 U CN207766285 U CN 207766285U CN 201820184631 U CN201820184631 U CN 201820184631U CN 207766285 U CN207766285 U CN 207766285U
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Abstract
The utility model discloses a kind of digital conference systems based on Streaming Media real-time bus, it includes stream media transmission system and lossless audio frequency conversion system, wherein stream media transmission system includes central control equipment etc., it is sequentially connected in series between multiple terminal devices, central control equipment is connected with the terminal device of the front end in the terminal device being connected in series with, and lossless audio frequency conversion system includes central controller etc..The utility model increases the frequency translation function of a variety of audios, and sample rate conversion parameter can flexibly be arranged according to demand in application process, and digital conference system is enable to be operated in the application environment of multi-sampling rate audio, realizes lossless sample rate conversion.
Description
Technical field
The utility model is related to a kind of systems, more particularly to a kind of digital session system based on Streaming Media real-time bus
System.
Background technology
The access of existing systematic sampling rate audio frequency apparatus is more single, is unable to flexible configuration difference sample rate conversion ginseng
Number, can not select best sample rate transfer algorithm according to different types of audio sample rate salient feature.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of digital session systems based on Streaming Media real-time bus
System, which increase the frequency translation functions of a variety of audios, and sample rate can flexibly be arranged according to demand in application process
Conversion parameter enables digital conference system to be operated in the application environment of multi-sampling rate audio, increases existing digital session system
It unites application flexibility, the audio signal of different sample rates is accessed in digital conference system, sample rate shift control module can root
According to sample rate conversion parameter is adjusted the characteristics of sample rate, best frequency conversion algorithm is selected, realizes lossless sample rate conversion,
Under the premise of not influencing realisation based on Streaming Media bus digital conference system, connecing for plurality of sampling rates audio frequency apparatus is realized
Enter, plurality of sampling rates audio frequency apparatus output, the flexibility that increase system uses can flexibly match according to requirements in the application
Different sample rate conversion parameters are set, according to different types of audio sample rate salient feature, selects best sample rate to convert and calculates
Method, it is ensured that the high-performance of system and the hi-fi of audio.
The utility model is to solve above-mentioned technical problem by following technical proposals：One kind is total in real time based on Streaming Media
The digital conference system of line, which is characterized in that it includes stream media transmission system and lossless audio frequency conversion system, wherein：
Stream media transmission system includes central control equipment, terminal device, is sequentially connected in series between multiple terminal devices, center
Control device is connected with the terminal device of the front end in the terminal device being connected in series with；
Lossless audio frequency conversion system includes central controller, Streaming Media bus, resolve command module, parsing audio mould
Block, audio processor, sample rate conversion module, sample rate shift control module, forwarding module, D/A conversion modules, power amplification
Device, loud speaker, audio input interface, audio input device, audio output apparatus, output end and the center of audio input interface are controlled
The input terminal of device processed is connected, output end and Streaming Media bus, audio processor, the sample rate shift control module of central controller
Input terminal be connected, audio processor, sample rate shift control module output end and sample rate conversion module input terminal phase
Even, sample rate conversion module output end is connected with the input terminal of forwarding module, D/A conversion modules, the output end of D/A conversion modules
Be connected with the input terminal of power amplifier, the output end of power amplifier is connected with the input terminal of loud speaker, forwarding module it is defeated
Outlet is connected with the input terminal of Streaming Media bus, and the output end of Streaming Media bus is connected with the input terminal of audio output apparatus, more
It is sequentially connected between a audio output apparatus, is sequentially connected between multiple audio input device, the output end of audio input device
It is connected with the input terminal of Streaming Media bus, output end and resolve command module, the input of parsing audio-frequency module of Streaming Media bus
End is connected, and resolve command module, the output end for parsing audio-frequency module are connected with the input terminal of central controller.
Preferably, the sample frequency of the multiple audio input device is different.
Preferably, the output frequency of the multiple audio output apparatus is different.
Preferably, the audio input interface is external audio source input interface.
The positive effect of the utility model is：The utility model increases the frequency translation function of a variety of audios,
And sample rate conversion parameter can be flexibly set according to demand in application process, so that digital conference system is operated in more
In the application environment of sample rate audio, increases existing digital conference system application flexibility, accessed in digital conference system different
The audio signal of sample rate, sample rate shift control module can be selected according to sample rate conversion parameter is adjusted the characteristics of sample rate
Best frequency conversion algorithm is selected, realizes lossless sample rate conversion, is not influencing to be based on Streaming Media bus digital conference system
Under the premise of realisation, the access of plurality of sampling rates audio frequency apparatus is realized, the output of plurality of sampling rates audio frequency apparatus increases system
The flexibility used, in the application can flexible configuration difference sample rate conversion parameter according to requirements, according to different type
Audio sample rate salient feature, select best sample rate transfer algorithm, it is ensured that the high-performance of system and the high of audio are protected
True property.
Description of the drawings
Fig. 1 is the stream media transmission system structure chart of the utility model.
Fig. 2 is the lossless audio frequency conversion system structure chart of the utility model.
Specific implementation mode
The utility model preferred embodiment is provided below in conjunction with the accompanying drawings, the technical solution of the utility model is described in detail.
As shown in Figure 1 to Figure 2, digital conference system of the utility model based on Streaming Media real-time bus includes that Streaming Media passes
Defeated system and lossless audio frequency conversion system, wherein：
Stream media transmission system includes central control equipment 101, terminal device 102, between multiple terminal devices 102 successively
Series connection, central control equipment 101 are connected with the terminal device 102 of the front end in the terminal device being connected in series with；
Lossless audio frequency conversion system include central controller 201, Streaming Media bus 202, resolve command module 203,
Parse audio-frequency module 204, audio processor 205, sample rate conversion module 206, sample rate shift control module 207, forwarding mould
Block 208, D/A conversion modules 209, power amplifier 210, loud speaker 211, audio input interface 212, audio input device 213,
The output end of audio output apparatus 214, audio input interface 212 is connected with the input terminal of central controller 201, central controller
201 output end is connected with the input terminal of Streaming Media bus 202, audio processor 205, sample rate shift control module 207, sound
Frequency processor 205, sample rate shift control module 207 output end be connected with the input terminal of sample rate conversion module 206, sample
206 output end of rate conversion module is connected with the input terminal of forwarding module 208, D/A conversion modules 209, D/A conversion modules 209
Output end is connected with the input terminal of power amplifier 210, the output end of power amplifier 210 and the input terminal phase of loud speaker 211
Even, the output end of forwarding module 208 is connected with the input terminal of Streaming Media bus 202, the output end and audio of Streaming Media bus 202
The input terminal of output equipment 214 is connected, and is sequentially connected between multiple audio output apparatus 214, multiple audio input device 213 it
Between be sequentially connected, the output end of audio input device 213 is connected with the input terminal of Streaming Media bus 202, Streaming Media bus 202
Output end is connected with the input terminal of resolve command module 203, parsing audio-frequency module 204, resolve command module 203, parsing audio
The output end of module 204 is connected with the input terminal of central controller 201.
The sample frequency of multiple audio input device 213 is different, and the sound of the corresponding sample rate of output is selected according to setting demand
Frequency signal.
The output frequency of multiple audio output apparatus 214 is different, and selection according to demand is sent to each system.
Audio input interface 212 is external audio source input interface, and external sound source is linked into central controller.
The operation principle of the utility model is as follows：Stream media transmission system includes multiple terminal devices, center control, equipment
Terminal device, central control equipment are connected with the terminal device of the front end in the terminal device being connected in series with, and come from so each
The audio of a terminal device, vision signal, to central control equipment, and come from central control equipment by uplink in series
Audio, vision signal is by downlink transfer to multiple terminal devices in series.Meet system streaming media data continuity and
The strict demand of time delay.Simultaneously as system that employs the connection type of serially concatenated, make system in practical engineering application
In wiring and layout it is more convenient, significantly reduce construction and maintenance cost.Lossless audio frequency conversion system, it is various not
Audio with sample rate is input to central controller by audio input interface, can also be by audio input device, through flowing matchmaker
Body bus, and carry out the external input and output of various signals and controlled to center by resolve command module and parsing audio-frequency module
Device sends digital audio and video signals；The digital audio and video signals of different sample rates are sent to audio processor according to need by central controller
Processing audio signal is asked to be sent to sample rate conversion module, carrying out sample rate according to the demand of sample rate shift control module turns
It changes, and is sent to after D/A converter converts digital signals into analog signal, be sent to power amplifier, expanded using loud speaker
Sound increases the frequency translation function of a variety of audios, and sampling can flexibly be arranged according to demand in application process in this way
Rate conversion parameter enables digital conference system to be operated in the application environment of multi-sampling rate audio, increases existing digital session
System application flexibility, accesses the audio signal of different sample rates in digital conference system, and sample rate shift control module can be with
According to sample rate conversion parameter is adjusted the characteristics of sample rate, best frequency conversion algorithm is selected, realizes that lossless sample rate turns
It changes.Central controller is used to receive the order data and digital audio-frequency data after parsing, and the demand being arranged according to order data
Audio signal is handled, and is sent to audio processor；The externally input that Streaming Media real-time bus carries out various signals by it is defeated
Go out and by resolve command module and parsing audio-frequency module to central controller and audio processor send signal；Resolve command
Module is used for command analysis that Streaming Media bus inputs and is forwarded to central controller；Audio-frequency module is parsed to be used for Streaming Media
The audio of bus input parses and is forwarded to central controller；Audio processor is used to receive the order of central controller, presses
The digital audio and video signals for parsing lower turn of audio-frequency module are handled according to command recognition code, each road audio is set according to command code
The weights of signal, later, digital audio and video signals are sent to D/A converter by the audio signal mixing that every road has individually been handled；
Sample rate conversion module is received through audio processor treated audio, is converted according to the sample rate of sample rate shift control module
Information is controlled, corresponding sample rate conversion is carried out to audio output, and generate corresponding audio data frame, is sent respectively to forwarding mould
Block and D/A conversion modules；Sample rate shift control module receives the sample rate conversion and control order of central controller, parsing control
Order, and it is sent to sample rate conversion module；Forwarding module is for the transformed audio frame buffer of sampled rate and is transmitted to stream
Media bus, and then it is sent to audio output apparatus；After D/A converter converts digital signals into analog signal, it is sent to work(
Rate amplifier uses loud speaker public address；Power amplifier is for sending analog audio signal power amplification to loud speaker；Loud speaker
For sound to be amplified output.In this way under the premise of not influencing realisation based on Streaming Media bus digital conference system,
The access of plurality of sampling rates audio frequency apparatus is realized, plurality of sampling rates audio frequency apparatus exports, the flexibility that increase system uses,
In can flexible configuration difference sample rate conversion parameter according to requirements, converted according to different types of audio sample rate
Feature selects best sample rate transfer algorithm, it is ensured that the high-performance of system and the hi-fi of audio.
Particular embodiments described above, the technical issues of to the solution of the utility model, technical solution and advantageous effect
It has been further described, it should be understood that the foregoing is merely specific embodiment of the utility model, not
For limiting the utility model, within the spirit and principle of the utility model, any modification for being made, changes equivalent replacement
Into etc., it should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of digital conference system based on Streaming Media real-time bus, which is characterized in that it include stream media transmission system and
Lossless audio frequency conversion system, wherein：
Stream media transmission system includes central control equipment, terminal device, is sequentially connected in series between multiple terminal devices, center control
Equipment is connected with the terminal device of the front end in the terminal device being connected in series with；
Lossless audio frequency conversion system include central controller, Streaming Media bus, resolve command module, parsing audio-frequency module,
Audio processor, sample rate conversion module, sample rate shift control module, forwarding module, D/A conversion modules, power amplifier,
Loud speaker, audio input interface, audio input device, audio output apparatus, output end and the center of audio input interface control
The input terminal of device is connected, the output end of central controller and Streaming Media bus, audio processor, sample rate shift control module
Input terminal is connected, and audio processor, the output end of sample rate shift control module are connected with the input terminal of sample rate conversion module,
Sample rate conversion module output end is connected with the input terminal of forwarding module, D/A conversion modules, the output end of D/A conversion modules with
The input terminal of power amplifier is connected, and the output end of power amplifier is connected with the input terminal of loud speaker, the output of forwarding module
End is connected with the input terminal of Streaming Media bus, and the output end of Streaming Media bus is connected with the input terminal of audio output apparatus, multiple
Be sequentially connected between audio output apparatus, be sequentially connected between multiple audio input device, the output end of audio input device with
The input terminal of Streaming Media bus is connected, output end and resolve command module, the input terminal of parsing audio-frequency module of Streaming Media bus
It is connected, resolve command module, the output end for parsing audio-frequency module are connected with the input terminal of central controller.
2. the digital conference system as described in claim 1 based on Streaming Media real-time bus, which is characterized in that the multiple sound
The sample frequency of frequency input equipment is different.
3. the digital conference system as described in claim 1 based on Streaming Media real-time bus, which is characterized in that the multiple sound
The output frequency of frequency output equipment is different.
4. the digital conference system as described in claim 1 based on Streaming Media real-time bus, which is characterized in that the audio is defeated
Incoming interface is external audio source input interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820184631.7U CN207766285U (en) | 2018-02-02 | 2018-02-02 | Digital conference system based on Streaming Media real-time bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820184631.7U CN207766285U (en) | 2018-02-02 | 2018-02-02 | Digital conference system based on Streaming Media real-time bus |
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| Publication Number | Publication Date |
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| CN207766285U true CN207766285U (en) | 2018-08-24 |
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| CN201820184631.7U Active CN207766285U (en) | 2018-02-02 | 2018-02-02 | Digital conference system based on Streaming Media real-time bus |
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2018
- 2018-02-02 CN CN201820184631.7U patent/CN207766285U/en active Active
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