CN206226448U - Make an uproar inspection broadcast system - Google Patents
Make an uproar inspection broadcast system Download PDFInfo
- Publication number
- CN206226448U CN206226448U CN201621234842.4U CN201621234842U CN206226448U CN 206226448 U CN206226448 U CN 206226448U CN 201621234842 U CN201621234842 U CN 201621234842U CN 206226448 U CN206226448 U CN 206226448U
- Authority
- CN
- China
- Prior art keywords
- guest room
- signal
- sent
- voice
- measuring equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 31
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241001672694 Citrus reticulata Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model is made an uproar inspection broadcast system there is provided one kind, including：Voice broadcast service processing module, volume adjusting module, guest room power amplifier, guest room loudspeaker, noise measuring equipment and guest room sound pick-up.Inspection broadcast system of making an uproar described in the utility model, by setting up noise measuring equipment and guest room sound pick-up, so that noise measuring equipment receives the signal that guest room sound pick-up and voice broadcast service processing module are sent simultaneously, and the signal after treatment is sent to the mode of volume adjusting module, noise measuring equipment has just filtered broadcast voice signal from guest room sound pick-up, and extracted environmental noise signal, realize the accurate detection environmental noise in the state of having broadcasting speech, meet changeable collection environment, suitable for the application scenarios for having voice broadcast, improve make an uproar inspection real-time and precision, and then passenger is improved to broadcasting speech resolving effect.
Description
Technical field
The utility model is related to inspection broadcast technology field of making an uproar in real time, more particularly to one kind is made an uproar inspection broadcast system.
Background technology
In train travelling process, different time, different sections of highway and different passenger take train all can generation environment noise, when
Passenger can not hear voice of calling out the stops when noise is excessive, or produce erroneous judgement to voice content, be made troubles to passenger.Therefore, train
Noise reducing apparatus must gather ambient sound using highly sensitive microphone or guest room loudspeaker when without sound broadcast.Row
Car noise reducing apparatus are sent to Broadcasting Control equipment after the result of collection is switched into data signal, and then control broadcasting speech size.When
When environmental noise is greater than 75db, the audio of broadcasting speech is allowed to begin 3-10dB bigger than whole environmental noise, to adapt to the change of environmental noise
Change.
But, due to being mixed with broadcasting speech in ambient sound, train inspection equipment of making an uproar but can not in real time reflect environment
Noise, it is necessary to noise could be gathered after broadcasting speech terminates.It is flat between standing and standing by taking number line of Shenzhen Metro as an example
Equal running time is about 2 points of halfs, and mandarin is needed to use during broadcast, and three kinds of voices of English and Guangdong language are reported, added out
Close the door prompt tone, finally stay a just only one minute time of collection noise.This causes that the noise information that the equipment is gathered is forbidden
Really, because the train peak period passenger that passes through tunnel or come off duty talks and makes a phone call not hear wide ON TRAINS during often there is broadcast
Report the problem of station information, it is impossible to which meet train increases what the use environments such as dB more than 20 were brought from spacious environment into tunnel noise
Problem.
Therefore, Fu Di companies develop a FM1188 audios DSP process chips, DSP（Digital Signal
Process, Digital Signal Processing）, also referred to as FM1188 process circuits chip is to refer to realize Digital Signal Processing
Chip.
As shown in figure 1, Party A's talk back equipment and Party B's talk back equipment both sides are both provided with FM1188 audio frequency processing circuit cores
Piece, built-in ADC analog to digital conversion circuits, DAC D/A converting circuits, RAM memory, ROM memory, DSP in the chip circuit
Process circuit and anti-sidetone algorithm.Party A's talk back equipment first records the voice data of local terminal monitoring loudspeaker, then re-records this
The voice data of intercommunication microphone is held, afterwards by the Processing Algorithm of FM1188 audio frequency processing circuit chip internals Party A's intercommunication
The voice data of equipment end intercommunication microphone collection subtracts the voice data of local terminal monitoring loudspeaker, draws voice data, then will
The voice data is passed in Party B's talk back equipment, so as to realize the function of anti-sidetone.Because the function is by software algorithm reality
Existing anti-sidetone, contrasts hardware anti-side-tone circuit, and its advantage is well to solve phase place change, changes in amplitude and transmission to prolong
Slow problem.
But, during for being applied in the application scenarios of voice broadcast, foregoing circuit is not applied to.
Utility model content
Therefore, technical problem to be solved in the utility model is：One kind is provided to make an uproar inspection broadcast system, can be with Real-time Collection
Environmental noise, meets changeable collection environment, it is adaptable to have the application scenarios of voice broadcast, improves passenger and broadcasting speech is differentiated
Effect.
Then, the utility model is made an uproar inspection broadcast system there is provided one kind, including：Voice broadcast service processing module, volume adjusting
Module, guest room power amplifier, guest room loudspeaker, noise measuring equipment and guest room sound pick-up, noise measuring equipment receive guest room and pick up simultaneously
The signal that sound device and voice broadcast service processing module are sent, and the signal after treatment is sent to volume adjusting module, volume adjusting
Module receives the signal that voice broadcast service processing module and noise reduction testing equipment are sent simultaneously, and by the broadcast voice signal after regulation
Guest room power amplifier is sent to, then guest room loudspeaker sounding is sent to by guest room power amplifier.
Wherein, the noise measuring equipment includes：FM1188 process circuit cores for removing guest room voice broadcast service audio
Piece, discharge circuit, rectifying and wave-filtering and operation amplifier process circuit and AD analog to digital conversion circuits, the sound that guest room sound pick-up will be collected
Message number is sent to FM1188 process circuit chips by discharge circuit, and it is wide that FM1188 process circuits chip also receives voice simultaneously
The signal that processing module is sent is broadcast, FM1188 process circuits chip puts the signal after treatment by rectifying and wave-filtering and computing afterwards
Big process circuit is sent to AD analog to digital conversion circuits, then sends the signal to volume adjusting module by AD analog to digital conversion circuits.
Inspection broadcast system of making an uproar described in the utility model, by setting up noise measuring equipment and guest room sound pick-up so that noise
Testing equipment receives the signal that guest room sound pick-up and voice broadcast service processing module are sent simultaneously, and the signal after treatment is sent to
The mode of volume adjusting module, noise measuring equipment has filtered broadcast voice signal from guest room sound pick-up, and has extracted ring
Border noise signal, realizes the accurate detection environmental noise in the state of having broadcasting speech, meets changeable collection environment, fits
For the application scenarios for having voice broadcast, improve passenger and effect is distinguished to broadcasting speech.
Brief description of the drawings
Fig. 1 is the electrical block diagram of FM1188 process circuits chip application in the prior art；
Fig. 2 is the electrical block diagram made an uproar described in the utility model embodiment and examine broadcast system；
Fig. 3 is FM1188 process circuit chip internal circuits structural representations.
Specific embodiment
Below, the utility model is described in detail with reference to accompanying drawing.
As shown in Figure 1-2, one kind is present embodiments provided to make an uproar inspection broadcast system, including：Voice broadcast service processing module, volume
Adjustment module, guest room power amplifier, guest room loudspeaker, noise measuring equipment and guest room sound pick-up, noise measuring equipment receive visitor simultaneously
The signal that room sound pick-up and voice broadcast service processing module are sent, and the signal after treatment is sent to volume adjusting module, volume
Adjustment module receives the signal that voice broadcast service processing module and noise reduction testing equipment are sent simultaneously, and by the broadcast audio after regulation
Signal is sent to guest room power amplifier, then is sent to guest room loudspeaker sounding by guest room power amplifier.
Wherein, the noise measuring equipment includes：FM1188 process circuit cores for removing guest room voice broadcast service audio
Piece, discharge circuit, rectifying and wave-filtering and operation amplifier process circuit and AD analog to digital conversion circuits, the sound that guest room sound pick-up will be collected
Message number is sent to FM1188 process circuit chips by discharge circuit, and it is wide that FM1188 process circuits chip also receives voice simultaneously
The signal that processing module is sent is broadcast, FM1188 process circuits chip puts the signal after treatment by rectifying and wave-filtering and computing afterwards
Big process circuit is sent to AD analog to digital conversion circuits, then sends the signal to volume adjusting module by AD analog to digital conversion circuits.
Specifically, voice broadcast service processing module, volume adjusting module, guest room power amplifier can be placed on guest room broadcast rack
In, after voice broadcast service processing module receives instruction of calling out the stops, point two-way output：Volume adjusting module regulation broadcast sound volume is issued all the way
Afterwards, guest room power amplifier is sent to, the loudspeaker of guest room 8 is promoted；Issue the FM1188 process circuits of noise measuring equipment in another road
Chip.
Played when guest room loudspeaker and broadcasted, when guest room sound pick-up gathers environmental noise, guest room sound pick-up is loudspeaker
Broadcast sounds also treated as noise and together gathered, collection signal is sent to FM1188 process circuit chips by discharge circuit.
FM1188 process circuits chip contrasts the environmental noise data that broadcast audio initial data and sound pick-up are collected, and uses
Its internal algorithm removes the broadcast data in environmental noise data, retains remaining noise signal and is given to rectifying and wave-filtering and computing
Noise signal is switched to DC level and is given to AD analog-to-digital conversions electricity by amplification treatment circuit, rectifying and wave-filtering and operation amplifier process circuit
Road, generation data signal is sent to the volume adjusting module of guest room rack.
Volume adjusting module judges the height of noise level by data signal, adjusts guest room loudspeaker output gain, enters
And complete the whole process of make an uproar in real time inspection and output volume control.
Fig. 3 is the internal circuit configuration schematic diagram of FM1188 process circuit chips, because the chip is prior art, herein
Excessive description is not done, and circuit diagram reference is only provided.
In sum, made an uproar described in the present embodiment inspection broadcast system, by setting up noise measuring equipment and guest room sound pick-up, made
Noise measuring equipment receives the signal that guest room sound pick-up and voice broadcast service processing module are sent simultaneously, and by the signal after treatment
The mode of volume adjusting module is sent to, noise measuring equipment has just filtered broadcast voice signal from guest room sound pick-up, and carries
Environmental noise signal has been got, the accurate detection environmental noise in the state of having broadcasting speech has been realized, changeable adopting has been met
Collection environment, it is adaptable to have the application scenarios of voice broadcast, improve noise eradicating efficacy.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (2)
1. one kind is made an uproar inspection broadcast system, it is characterised in that including：Voice broadcast service processing module, volume adjusting module, guest room work(
Put, guest room loudspeaker, noise measuring equipment and guest room sound pick-up, noise measuring equipment receives guest room sound pick-up simultaneously and voice is wide
The signal that processing module is sent is broadcast, and the signal after treatment is sent to volume adjusting module, volume adjusting module is received simultaneously
The signal that voice broadcast service processing module and noise measuring equipment are sent, and the broadcast voice signal after regulation is sent to guest room work(
Electric discharge road, then guest room loudspeaker sounding is sent to by guest room power amplifier.
2. inspection broadcast system of making an uproar according to claim 1, it is characterised in that the noise measuring equipment includes：For going
Except the FM1188 process circuits chip of guest room voice broadcast service audio, discharge circuit, rectifying and wave-filtering and operation amplifier process circuit and
AD analog to digital conversion circuits, the voice signal that guest room sound pick-up will be collected is sent to FM1188 process circuit cores by discharge circuit
Piece, FM1188 process circuits chip also receives the signal that voice broadcast service processing module is sent simultaneously, afterwards FM1188 process circuits
Signal after treatment is sent to AD analog to digital conversion circuits by chip by rectifying and wave-filtering and operation amplifier process circuit, then by AD moulds
Number change-over circuit sends the signal to volume adjusting module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234842.4U CN206226448U (en) | 2016-11-17 | 2016-11-17 | Make an uproar inspection broadcast system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234842.4U CN206226448U (en) | 2016-11-17 | 2016-11-17 | Make an uproar inspection broadcast system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206226448U true CN206226448U (en) | 2017-06-06 |
Family
ID=58792638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621234842.4U Active CN206226448U (en) | 2016-11-17 | 2016-11-17 | Make an uproar inspection broadcast system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206226448U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022597A (en) * | 2017-12-15 | 2018-05-11 | 北京远特科技股份有限公司 | A kind of sound processing system, method and vehicle |
| CN112616109A (en) * | 2020-11-19 | 2021-04-06 | 广州市保伦电子有限公司 | Automatic adjustment method, server and system for broadcast noise detection volume |
| CN112735464A (en) * | 2020-12-21 | 2021-04-30 | 招商局重庆交通科研设计院有限公司 | Tunnel emergency broadcast sound effect information detection method |
-
2016
- 2016-11-17 CN CN201621234842.4U patent/CN206226448U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022597A (en) * | 2017-12-15 | 2018-05-11 | 北京远特科技股份有限公司 | A kind of sound processing system, method and vehicle |
| CN112616109A (en) * | 2020-11-19 | 2021-04-06 | 广州市保伦电子有限公司 | Automatic adjustment method, server and system for broadcast noise detection volume |
| CN112735464A (en) * | 2020-12-21 | 2021-04-30 | 招商局重庆交通科研设计院有限公司 | Tunnel emergency broadcast sound effect information detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206226448U (en) | Make an uproar inspection broadcast system | |
| CN105981408A (en) | Systems and methods for sharing secondary path information between audio channels in an adaptive noise cancellation system | |
| CN111883163B (en) | Audio howling suppression method, device and system and neural network training method | |
| CN102197422A (en) | Audio source proximity estimation using sensor array for noise reduction | |
| CN110956976B (en) | Echo cancellation method, device and equipment and readable storage medium | |
| CN101123629A (en) | An environmental noise filtering method and device for mobile phone | |
| CN105322985A (en) | System and method for testing Bluetooth connection of vehicle-borne multimedia equipment | |
| CN105577943A (en) | Bus stop reporting prompting method and system and mobile terminal | |
| CN201533398U (en) | Broadcasting system of communication and transportation equipment | |
| CN103117083B (en) | A kind of audio-frequency information harvester and method | |
| CN102265334A (en) | Variable noise masking during periods of substantial silence | |
| CN112509595A (en) | Audio data processing method, system and storage medium | |
| CN111883158A (en) | Echo cancellation method and device | |
| CN206293160U (en) | A kind of speech processing system based on digital DSP algorithm | |
| CN103402038A (en) | Method and device for eliminating echo of receiver from opposite side in handfree state of mobile phone | |
| CN102413216A (en) | Method and system for realizing Android intelligent mobile terminal voice communication | |
| CN110301140A (en) | Noise remove device, noise remove method and noise remove program | |
| CN101977273B (en) | Method for testing conducting anti-interference performance of network voice communication equipment | |
| CN112637438B (en) | Entrance guard double-end intercom method and system based on single-line transmission | |
| CN101699837B (en) | Telephone voice output gain adjustment method, device and communication terminal | |
| CN207039811U (en) | A kind of multimedia microphone Intelligent Measurement audio amplifier | |
| CN106708741A (en) | Voice application test method and system | |
| CN103096232A (en) | Frequency self-adaptation method and device used for hearing aid | |
| CN103002094B (en) | Method and device for suppressing environmental noise | |
| CN103152686B (en) | A kind of digital deaf-aid of customizable functionality pattern and its implementation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000, 202 West Side, Assembly Plant 2, Shapu Community Rail Transit Equipment Science and Technology Park, Songgang Street, Bao'an District, Shenzhen, Guangdong Province Patentee after: Beihai Communication (Shenzhen) Group Co.,Ltd. Country or region after: China Address before: 518000, 1st floor, Building 27, Zhiheng Strategic Emerging Industry Park, Nantou Guankou Second Road, Nanshan District, Shenzhen, Guangdong Province Patentee before: SHENZHEN BEIHAI RAIL TRANSIT TECHNOLOGY CO.,LTD. Country or region before: China |