CN204089832U - Double-channel audio otherness checkout gear - Google Patents
Double-channel audio otherness checkout gear Download PDFInfo
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- CN204089832U CN204089832U CN201420555675.8U CN201420555675U CN204089832U CN 204089832 U CN204089832 U CN 204089832U CN 201420555675 U CN201420555675 U CN 201420555675U CN 204089832 U CN204089832 U CN 204089832U
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Abstract
The utility model relates to a kind of double-channel audio otherness checkout gear, double-channel audio signal is sampled, audio transmission time delay regulates, otherness computing, after display Interval Maps, carry out result display by integrated display screen or carry out provisional storage by Flash RAM, long-range PC is transferred to by the result after computing or computing map by the integrated transmission circuit of WIFI or 3G/4G, mobile phone, flat board waits equipment, solve same signal source by different communication link transmission to the otherness test problems detecting Received signal strength, thus Real Time Observation can transmit otherness and the dynamic change by noise jamming to different physical path.It has the advantages such as circuit realiration is simple, low cost of manufacture, real-time handling property are good, modularization Integrated predict model is strong.
Description
Technical field
The utility model relates to the communications field, particularly relates to a kind of audio sample and the checkout gear of the real-time display double-channel audio signal difference opposite sex.
Background technology
In video and audio transmission and the field of issue, in order to realize broadcasting fault-tolerance, generally adopting redundant technique, namely carrying out programme content transmission by active and standby two-way mode, and being broadcasted by the real-time handoff technique of active and standby two-way fault.When programme signal is transmitted by different link, due to the difference of the factors such as transmission equipment, transmission link, transmission disturbance, need to carry out otherness detection and transmission link debugging to two-way programme signal at receiving terminal.Detection mode mainly contains: vision signal, audio signal and video and audio hybrid detection.The detection of vision signal and video/audio signal, data volume is large, and their advantage is: the video processing applications module that comparison in difference intuitive is strong, accuracy of detection is high, the existing market of accessible site is more ripe carries out fault-tolerant processing etc.; Shortcoming is: circuit realiration is complicated, cost is high, video format diversity causes Customization Module difficulty etc.Compared to video and video and audio mixed signal detection method, audio signal detects has the advantages such as deal with data amount is less, signal intensity complexity is low, real-time that is check processing is better, and therefore the detection mode of audio signal is applicable to the field application such as application demand is simple, requirement of real-time is high, hardware integration modularization.
Utility model content
The utility model is overcome above-mentioned weak point, object is to provide a kind of double-channel audio otherness checkout gear, this device is by double-channel audio real-time sampling, process, display or store the steps such as transmission, realizes detecting in real time affecting by factors such as transmission equipment, transmission link, transmission disturbance the signal transmission issues caused in different physical path transmitting procedure and observing.It has the advantages such as module integration application is strong, deal with data amount is little, circuit realiration simple, low cost of manufacture, process real-time are good.
The utility model achieves the above object by the following technical programs: a kind of double-channel audio otherness checkout gear comprises: power supply, splitter, audio input interface, Difference test device, WIFI integrated data transceiver module, 3G/4G integrated data transceiver module, data storage, display module; Splitter is connected with audio input interface, and audio input interface is positioned on Difference test device; WIFI integrated data transceiver module, 3G/4G integration module, data storage, display module are connected with Difference test device; Power supply is connected by power supply adaptor with Difference test device.
As preferably, described Difference test device comprises: the integrated multiplier module of adder, subtracter, FPGA and the integrated dividing module of FPGA, delayer; Delayer is connected with subtracter, and subtracter is connected with the integrated dividing module of FPGA, and the integrated dividing module of FPGA is connected with the integrated multiplier module of FPGA, and the integrated multiplier module of FPGA is connected with adder.
As preferably, described Difference test device is input as two-way realaudio data, exports the difference value into two-way audio data.
As preferably, audio signal is resolved into two-way digital audio and video signals and is transmitted by different physical channel by described splitter, and wherein the quantization digit of digital audio and video signals is 16.
As preferably, described data storage is Flash RAM, stores two-way digital audio and video signals difference operation result or the data after mapping temporarily.
As preferably, described display module is 12864 liquid crystal display screens, and liquid crystal display screen showing data map to N is that [0,2N] of ordinate center line is interval.
As preferably, the connected mode of described splitter, data storage, display module, WIFI integrated data transceiver module, 3G/4G integration module and Difference test device is based on I/O mouth.
The beneficial effects of the utility model are: (1) circuit realiration is simple, low cost of manufacture; (2) in the sampling period, amount of audio data is little, thus data storage capacity to require that low and audio frequency otherness compares process real-time good; (3) checkout gear modular construction is good, and Integrated predict model is strong; (4) two-way audio difference operation result can, by mapping directly by liquid crystal display result, also can adopt WIFI or 3G/4G that operation result or mapping result are transferred to PC or Intelligent mobile equipment, therefore uses flexibility strong.
Accompanying drawing explanation
Fig. 1 is the utility model applied environment connection diagram;
Fig. 2 is Difference test device connection layout in the utility model;
Fig. 3 is the utility model Difference test device fundamental diagram;
Fig. 4 is that in the utility model Difference test device, adder is connected application schematic diagram with subtracter.
Embodiment
Below in conjunction with specific embodiment, the utility model is described further, but protection range of the present utility model is not limited in this:
Embodiment: a kind of double-channel audio otherness checkout gear comprises: power supply, splitter, audio input interface, Difference test device, WIFI integrated data transceiver module, 3G/4G integrated data transceiver module, Flash RAM, 12864 liquid crystal display screens; Splitter is connected with audio input interface, and audio input interface is positioned on Difference test device; WIFI integrated data transceiver module, 3G/4G integration module, Flash RAM, 12864 liquid crystal display screens are connected with Difference test device; Power supply is connected by power supply adaptor with Difference test device.
As shown in Figure 1, same sound source signal resolves into the identical audio signal of two-way (time shift precision is relevant with audio frequency splitter, carries out synchronous adjustment at receiving terminal by delayer) via audio frequency splitter, is transmitted by active and standby transmission channel.After Difference test device receives audio signal, after carrying out the adjustment of double-channel audio synchronism by digital audio time shifter, otherness computing is carried out to double-channel audio signal, and by operation result directly or map to [0,2N] interval rear storage, carry out the display of the double-channel audio signal difference opposite sex by integrated WIFI, 3G/4G module transfer to the receiving terminals such as PC, mobile phone, flat board.
As shown in Figure 2, power supply is powered to Difference test device by power supply adaptor, audio signal sample is by access two-way digital audio and video signals, via after the process of Difference test device by 12864 liquid crystal display screen Graphics Processing results or just result be stored to Flash RAM, and by WIFI or 3G/4G integration module be sent to recipient remote terminal display.WIFI integrated data transceiver module, 3G/4G integrated data transceiver module, Flash RAM, 12864 liquid crystal display screens are all connected in the I/O mouth of Difference test device.
As shown in Figure 3, two-way digital audio and video signals carries out time shift adjustment via digital audio delayer to audio signal, input in 16 subtracters be made up of 74LS283 respectively as minuend and subtrahend, wherein subtracter pin connected mode as shown in Figure 4, performs A-B arithmetic operation.Afterwards, the dividing module based on FPGA is transferred to by operation result to perform difference ratio arithmetic operation, the multiplier module that the floating number business obtained is sent to based on FPGA as multiplicand performs double-channel audio difference value map operation, result is mapped to [0, N] in interval, 16 add operations operation (adder pin connected mode as shown in Figure 3) are performed finally by adder, by result by [0, N] interval be adjusted to using ordinate N as center line [0,2N] interval, thus make the display of audio frequency difference characteristic more directly perceived.Here consider that the adder that Difference test device uses four 74LS283 to realize can only carry out integer arithmetic, the multiplier module therefore based on FPGA will carry out floor operation before input summer.In actual different application environment, WIFI, 3G/4G integration module is optional, and audio delay device also can use single channel to regulate and realize.
The know-why being specific embodiment of the utility model and using described in above; if according to the change that conception of the present utility model is done; its function produced do not exceed that specification and accompanying drawing contain yet spiritual time, protection range of the present utility model must be belonged to.
Claims (7)
1. a double-channel audio otherness checkout gear, is characterized in that comprising: power supply, splitter, audio input interface, Difference test device, WIFI integrated data transceiver module, 3G/4G integrated data transceiver module, data storage, display module; Splitter is connected with audio input interface, and audio input interface is positioned on Difference test device; WIFI integrated data transceiver module, 3G/4G integration module, data storage, display module are connected with Difference test device; Power supply is connected by power supply adaptor with Difference test device.
2. a kind of double-channel audio otherness checkout gear according to claim 1, is characterized in that: described Difference test device comprises: the integrated multiplier module of adder, subtracter, FPGA and the integrated dividing module of FPGA, delayer; Delayer is connected with subtracter, and subtracter is connected with the integrated dividing module of FPGA, and the integrated dividing module of FPGA is connected with the integrated multiplier module of FPGA, and the integrated multiplier module of FPGA is connected with adder.
3. a kind of double-channel audio otherness checkout gear according to claim 1 and 2, is characterized in that: described Difference test device is input as two-way realaudio data, exports the difference value into two-way audio data.
4. a kind of double-channel audio otherness checkout gear according to claim 1 and 2, it is characterized in that: audio signal is resolved into two-way digital audio and video signals and transmitted by different physical channel by described splitter, and wherein the quantization digit of digital audio and video signals is 16.
5. a kind of double-channel audio otherness checkout gear according to claim 1, is characterized in that: described data storage is Flash RAM, interim storage two-way digital audio and video signals difference operation result or the data after mapping.
6. a kind of double-channel audio otherness checkout gear according to claim 1, is characterized in that: described display module is 12864 liquid crystal display screens, and liquid crystal display screen showing data map to N is that [0,2N] of ordinate center line is interval.
7. a kind of double-channel audio otherness checkout gear according to claim 1, is characterized in that: the connected mode of described splitter, data storage, display module, WIFI integrated data transceiver module, 3G/4G integration module and Difference test device is based on I/O mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555675.8U CN204089832U (en) | 2014-09-26 | 2014-09-26 | Double-channel audio otherness checkout gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555675.8U CN204089832U (en) | 2014-09-26 | 2014-09-26 | Double-channel audio otherness checkout gear |
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| Publication Number | Publication Date |
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| CN204089832U true CN204089832U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420555675.8U Expired - Fee Related CN204089832U (en) | 2014-09-26 | 2014-09-26 | Double-channel audio otherness checkout gear |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365555A (en) * | 2019-08-08 | 2019-10-22 | 广州虎牙科技有限公司 | Audio delay test method, device, electronic equipment and readable storage medium storing program for executing |
| CN114495984A (en) * | 2022-04-01 | 2022-05-13 | 北京澜灵科技有限责任公司 | Real-time audio stream comparison method and system |
-
2014
- 2014-09-26 CN CN201420555675.8U patent/CN204089832U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365555A (en) * | 2019-08-08 | 2019-10-22 | 广州虎牙科技有限公司 | Audio delay test method, device, electronic equipment and readable storage medium storing program for executing |
| CN110365555B (en) * | 2019-08-08 | 2021-12-10 | 广州虎牙科技有限公司 | Audio delay testing method and device, electronic equipment and readable storage medium |
| CN114495984A (en) * | 2022-04-01 | 2022-05-13 | 北京澜灵科技有限责任公司 | Real-time audio stream comparison method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20160926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |