CN208241889U - A kind of Bluetooth audio frequency transmitting device and test macro for electroacoustical measurement - Google Patents
A kind of Bluetooth audio frequency transmitting device and test macro for electroacoustical measurement Download PDFInfo
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- CN208241889U CN208241889U CN201820776481.9U CN201820776481U CN208241889U CN 208241889 U CN208241889 U CN 208241889U CN 201820776481 U CN201820776481 U CN 201820776481U CN 208241889 U CN208241889 U CN 208241889U
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Abstract
The utility model discloses a kind of Bluetooth audio frequency transmitting device and test macro for electroacoustical measurement, described device includes embeded processor module, bluetooth module, DC power supply and crystal oscillator module, communication interface modules, audio-frequency signal processing module and Audio interface block；The audio-frequency signal processing module is electrically connected with bluetooth module, Audio interface block, embeded processor module, the audio-frequency signal processing module is provided with modulus/D/A conversion unit and carries out modulus/digital-to-analogue conversion to audio signal, and the audio-frequency signal processing module is additionally provided with coding/decoding unit and encodes/decodes processing to audio signal.The utility model solves existing Bluetooth audio frequency transmitting device and has a single function, and cannot carry out Digital Signal Processing to the audio data of bluetooth equipment to be measured, lead to the problem that Bluetooth electronic product test scheme is complicated and development cost is high.
Description
Technical field
The utility model relates to electroacoustical measurement apparatus field more particularly to a kind of Bluetooth audio frequency transmission for electroacoustical measurement
Device and test macro.
Background technique
The electronic product of bluetooth such as bluetooth headset, Baffle Box of Bluetooth facilitate daily life using more and more extensive.
In order to detect the quality of Bluetooth electronic product data transmission, need to carry out electroacoustical measurement after the completion of Bluetooth electronic product manufacturing.
Bluetooth electroacoustical measurement generally requires Bluetooth audio frequency transmitting device and connects bluetooth equipment to be measured and upper host, upper master
Machine is analyzed by audio of the software to bluetooth equipment to be measured.
Existing Bluetooth audio frequency transmitting device has a single function, and cannot carry out digital signal to the audio data of bluetooth equipment to be measured
Processing needs upper host to complete, causes test process slow in this way, and need to develop additional program to be tested, so that
Related electroacoustical measurement scheme is complicated and development cost is high.
Therefore, there are also to be developed for the prior art.
Utility model content
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is that proposing a kind of for electroacoustical measurement
Bluetooth audio frequency transmitting device, it is intended to it solves existing Bluetooth audio frequency transmitting device and has a single function, it cannot be to the sound of bluetooth equipment to be measured
Frequency leads to the problem that Bluetooth electronic product test scheme is complicated and development cost is high according to Digital Signal Processing is carried out.
To achieve the above object, the utility model takes following technical scheme:
A kind of Bluetooth audio frequency transmitting device for electroacoustical measurement, wherein include: embeded processor module, bluetooth mould
Block, DC power supply and crystal oscillator module, communication interface modules, audio-frequency signal processing module and Audio interface block；The bluetooth mould
Block and bluetooth equipment to be measured are matched and carry out the wireless transmission of audio signal；The audio-frequency signal processing module and bluetooth mould
Block, Audio interface block, the electrical connection of embeded processor module, the audio-frequency signal processing module are provided with modulus/digital-to-analogue and turn
It changes unit and modulus/digital-to-analogue conversion is carried out to audio signal, the audio-frequency signal processing module is additionally provided with coding/decoding unit pair
Audio signal encodes/decodes processing；Audio interface block connection outer audio equipment transmits audio signal；Communication
Interface module is electrically connected with embeded processor module, while connecting the control signal that upper host receives upper host, insertion
Formula processor module controls bluetooth module and audio-frequency signal processing module according to the control signal of upper host；DC power supply and crystalline substance
Vibration module is electrically connected with bluetooth module, audio-frequency signal processing module, embeded processor module, communication interface modules, provides work
Make voltage and clock signal.
Wherein, the chip model of the embeded processor module is STM32F030K6T6, audio-frequency signal processing module
Chip model is CS47L24, the chip model of bluetooth module is CSR8670.
Wherein, the Audio interface block is provided with dual-channel analog audio input interface and two-channel digital audio
Signal output interface.
Wherein, the Audio interface block uses the bnc interface of 75 ohm characteristic impedances, and frequency range is 0~2Ghz.
Wherein, the DC power supply and crystal oscillator module provide 1.2V or 3.3V or 5V direct-current working volts and 40Mhz,
Or 12.288Mhz clock signal.
Wherein, it is communicated between the bluetooth module and bluetooth equipment to be measured using A2DP agreement and HFP agreement.
Wherein, it is provided with the connection of I2S bus between the audio-frequency signal processing module and bluetooth module, is passed in a manner of PCM
Transfer audio signal.
It wherein, further include the LED light being electrically connected with embeded processor module, embeded processor module is believed according to audio
The audio detection signal of number processing module feedback controls LED light, for prompting the detecting state of audio signal.
The utility model also proposes a kind of test macro, wherein passes including the above-mentioned Bluetooth audio frequency for electroacoustical measurement
Defeated device, and the upper host being connect with the Bluetooth audio frequency transmitting device, the audio signal analysis being connect with upper host
Instrument.
The Bluetooth audio frequency transmitting device for electroacoustical measurement of the utility model, by setting embeded processor module,
Bluetooth module, DC power supply and crystal oscillator module, communication interface modules, audio-frequency signal processing module and Audio interface block, audio
Signal processing module is provided with modulus/D/A conversion unit and coding/decoding unit and carries out modulus/digital-to-analogue turn to audio signal
It changes and is handled with coding/decoding, enable the Bluetooth audio frequency transmitting device of the utility model to the audio data of bluetooth equipment to be measured
Carry out Digital Signal Processing, can accelerate entire electroacoustical measurement test speed, simultaneously because audio-frequency signal processing module with modulus/
D/A conversion unit and coding/decoding unit, so that additional for not needed in the testing scheme of the Bluetooth audio frequency transmitting device
Program development, reduce the complexity and development cost of testing scheme.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is that composition of the utility model for the first embodiment of the Bluetooth audio frequency transmitting device of electroacoustical measurement is illustrated
Figure；
Fig. 2 is the composition schematic diagram of the first embodiment of the test macro of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. should do broad sense reason
Solution, for example, " fixation " may be a fixed connection, may be a detachable connection, or integral；It can be mechanical connection, it can also
To be electrical connection；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary
Or the interaction relationship of two elements, unless otherwise restricted clearly.It for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term in the present invention is understood as the case may be.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and cannot manage
Solution is its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.
Embodiment one please refers to Fig. 1, a kind of Bluetooth audio frequency transmitting device for electroacoustical measurement that the present embodiment proposes
100, comprising: embeded processor module 10, bluetooth module 20, DC power supply and crystal oscillator module 40, communication interface modules 30,
Audio-frequency signal processing module 50 and Audio interface block 60；
The bluetooth module 20 is matched with bluetooth equipment 300 to be measured and carries out the wireless transmission of audio signal；It is to be measured
Bluetooth equipment 300 includes the Bluetooth electronics products such as bluetooth headset, Baffle Box of Bluetooth.Bluetooth module 20 and bluetooth equipment 300 to be measured it
Between audio signal transmission include the audio for receiving audio signal from bluetooth equipment 300 to be measured and sending upper host 200
Signal is to bluetooth equipment 300 to be measured.
The audio-frequency signal processing module 50 and bluetooth module 20, Audio interface block 60, embeded processor module 10
Electrical connection, the audio-frequency signal processing module 50 are provided with modulus/D/A conversion unit 501 and carry out modulus/number to audio signal
Mould conversion, the audio-frequency signal processing module 50 are additionally provided with coding/decoding unit 502 and encode/decode to audio signal
Processing.
Audio interface block 60 connects outer audio equipment and transmits to audio signal；Outer audio equipment can be electricity
Audio Frequency Analyser, audio-frequency generator or upper host in sounding test system.
Communication interface modules 50 is electrically connected with embeded processor module 10, at the same connect upper host 200 receive it is upper
The control signal of host 200, embeded processor module 10 according to upper host 200 control signal control bluetooth module 20 and
Audio-frequency signal processing module 50；
DC power supply and crystal oscillator module 40 and bluetooth module 20, audio-frequency signal processing module 50, embeded processor module
10, communication interface modules 30 is electrically connected, and provides operating voltage and clock signal.
The audio-frequency signal processing module 50 of the present embodiment can believe the simulation of outer audio equipment such as audio-frequency generator input
It number carries out being sent to bluetooth to be measured by bluetooth module after analog-to-digital conversion and coding compression, Digital Signal Processing and digital equalising and set
It is standby to play out；Audio-frequency signal processing module 50 can be carried out bluetooth equipment 300 to be measured by the audio signal that microphone acquires
Audio Frequency Analyser is delivered to after the processing such as digital-to-analogue conversion and decoding or upper host is analyzed；Due to the utility model
Bluetooth audio frequency transmitting device 100 have audio-frequency signal processing module 50, be exclusively used in the modulus/digital-to-analogue conversion and volume of audio signal
Code/decoding process is provided with powerful audio digital signals processing function relative to existing Bluetooth audio frequency transmitting device, is not required to
It wants upper host to be handled, improves the speed of electroacoustical measurement, also due to encoding and decoding built in audio-frequency signal processing module 50
Program does not need additional program development relative to existing testing scheme so that entire testing scheme is simple, reduce exploitation at
This.
The chip model of embeded processor module 10 in the utility model embodiment is STM32F030K6T6, audio
The chip model of signal processing module 50 is CS47L24, the chip model of bluetooth module 20 is CSR8670.
Preferably, the Audio interface block 60 is provided with dual-channel analog audio input interface and two-channel digital
Audio signal output interface.Twin-channel input interface and output interface can improve the transmission speed of signal.
Preferably, the Audio interface block 60 using 75 ohm characteristic impedances bnc interface, frequency range is 0~
2Ghz.Bnc interface connection transmission range is long, signal stabilization.
The DC power supply and crystal oscillator module 40 of the utility model provide 1.2V or 3.3V or 5V direct-current working volts and
40Mhz or 12.288Mhz clock signal.The clock signal of different operating voltage and different frequency adapts to Bluetooth audio frequency biography
The use demand of disparate modules in defeated device 100.
Preferably, it is carried out between the bluetooth module 20 and bluetooth equipment to be measured 300 using A2DP agreement and HFP agreement
Communication.Using the A2DP agreement and HFP agreement in 4.0 agreement of bluetooth between bluetooth module 20 and bluetooth equipment to be measured 300, make
Bluetooth audio frequency transmitting device 100 and 300 stable connection of bluetooth equipment to be measured are obtained, guarantees the stability and reliability of electroacoustical measurement.
The connection of I2S bus is provided between the audio-frequency signal processing module 50 and bluetooth module 20 of the utility model, with PCM
Mode transmits audio signal.The connection of I2S bus avoids the audio signal distortion of transmission.
Preferably, the Bluetooth audio frequency transmitting device 100 further includes the LED light being electrically connected with embeded processor module 10
70, embeded processor module 70 controls LED light 70 according to the audio detection signal that audio-frequency signal processing module 50 is fed back, and is used for
Prompt the detecting state of audio signal.
As shown in Fig. 2, the utility model also proposes a kind of test macro, including the above-mentioned bluetooth sound for electroacoustical measurement
Frequency transmitting device 100, and the upper host 200 being connect with the Bluetooth audio frequency transmitting device, the sound being connect with upper host
Frequency signal analyzer 300, Audio Frequency Analyser 300 can be direct with the Audio interface block 60 of Bluetooth audio frequency transmitting device 100
Connection, can send and receive audio analog signals.Upper host 200 for control to Bluetooth audio frequency transmitting device 100, and with
Audio Frequency Analyser 300 carries out online testing, due to transmitting dress using the Bluetooth audio frequency for electroacoustical measurement of the present embodiment
100 are set, the testing scheme of the test macro of the utility model is simple, and development cost is low, and testing efficiency is high.
The utility model proposes the Bluetooth audio frequency transmitting device 100 and test macro for electroacoustical measurement, pass through setting
Embeded processor module 10, bluetooth module 20, DC power supply and crystal oscillator module 40, communication interface modules 30, at audio signal
Module 50 and Audio interface block 60 are managed, audio-frequency signal processing module 50 is provided with modulus/D/A conversion unit 501 and compiles
Code/decoding unit 502 carries out modulus/digital-to-analogue conversion to audio signal and coding/decoding is handled, so that the indigo plant of the utility model
Tooth audio transmission device 100 can carry out Digital Signal Processing to the audio data of bluetooth equipment 300 to be measured, can accelerate entire electroacoustic
Test speed is tested, simultaneously because audio-frequency signal processing module 50 has modulus/D/A conversion unit 501 and coding/decoding list
Member 502, so that reducing test side for not needing additional program development in the testing scheme of the Bluetooth audio frequency transmitting device
The complexity and development cost of case.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Under all utility models in the utility model are conceived, equivalent structure made based on the specification and figures of the utility model
Transformation, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (9)
1. a kind of Bluetooth audio frequency transmitting device for electroacoustical measurement characterized by comprising embeded processor module, indigo plant
Tooth module, DC power supply and crystal oscillator module, communication interface modules, audio-frequency signal processing module and Audio interface block；
The bluetooth module and bluetooth equipment to be measured are matched and carry out the wireless transmission of audio signal；
The audio-frequency signal processing module is electrically connected with bluetooth module, Audio interface block, embeded processor module, the sound
Audio signalprocessing module is provided with modulus/D/A conversion unit and carries out modulus/digital-to-analogue conversion, the audio signal to audio signal
Processing module is additionally provided with coding/decoding unit and encodes/decodes processing to audio signal；
Audio interface block connection outer audio equipment transmits audio signal；
Communication interface modules is electrically connected with embeded processor module, while connecting the control letter that upper host receives upper host
Number, embeded processor module controls bluetooth module and audio-frequency signal processing module according to the control signal of upper host；
DC power supply and crystal oscillator module and bluetooth module, audio-frequency signal processing module, embeded processor module, communication interface mould
Block electrical connection, provides operating voltage and clock signal.
2. the Bluetooth audio frequency transmitting device according to claim 1 for electroacoustical measurement, which is characterized in that described embedded
The chip model of processor module is STM32F030K6T6, the chip model of audio-frequency signal processing module is CS47L24, bluetooth
The chip model of module is CSR8670.
3. the Bluetooth audio frequency transmitting device according to claim 1 for electroacoustical measurement, which is characterized in that the audio connects
Mouth mold block is provided with dual-channel analog audio input interface and two-channel digital audio signal output interface.
4. the Bluetooth audio frequency transmitting device according to claim 3 for electroacoustical measurement, which is characterized in that the audio connects
Mouth mold block uses the bnc interface of 75 ohm characteristic impedances, and frequency range is 0~2Ghz.
5. the Bluetooth audio frequency transmitting device according to claim 1 for electroacoustical measurement, which is characterized in that the direct current
Source and crystal oscillator module provide 1.2V or 3.3V or 5V direct-current working volts and 40Mhz or 12.288Mhz clock signal.
6. the Bluetooth audio frequency transmitting device according to claim 1 for electroacoustical measurement, which is characterized in that the bluetooth mould
It is communicated between block and bluetooth equipment to be measured using A2DP agreement and HFP agreement.
7. the Bluetooth audio frequency transmitting device according to claim 1 for electroacoustical measurement, which is characterized in that the audio letter
It number is provided with the connection of I2S bus between processing module and bluetooth module, audio signal is transmitted in a manner of PCM.
8. the Bluetooth audio frequency transmitting device according to claim 1 for electroacoustical measurement, which is characterized in that further include with it is embedding
Enter the LED light of formula processor module electrical connection, embeded processor module is examined according to the audio that audio-frequency signal processing module is fed back
It surveys signal and controls LED light, for prompting the detecting state of audio signal.
9. a kind of test macro, which is characterized in that including the described in any item bluetooths for electroacoustical measurement of such as claim 1-8
Audio transmission device, and the upper host being connect with the Bluetooth audio frequency transmitting device, the audio letter being connect with upper host
Number analyzer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820776481.9U CN208241889U (en) | 2018-05-23 | 2018-05-23 | A kind of Bluetooth audio frequency transmitting device and test macro for electroacoustical measurement |
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| CN201820776481.9U CN208241889U (en) | 2018-05-23 | 2018-05-23 | A kind of Bluetooth audio frequency transmitting device and test macro for electroacoustical measurement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111182116A (en) * | 2019-12-31 | 2020-05-19 | 紫光展讯通信(惠州)有限公司 | Multi-channel audio testing device and testing method |
| CN112291681A (en) * | 2020-10-23 | 2021-01-29 | 深圳市垦鑫达科技有限公司 | Intelligent Bluetooth control system |
-
2018
- 2018-05-23 CN CN201820776481.9U patent/CN208241889U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111182116A (en) * | 2019-12-31 | 2020-05-19 | 紫光展讯通信(惠州)有限公司 | Multi-channel audio testing device and testing method |
| CN112291681A (en) * | 2020-10-23 | 2021-01-29 | 深圳市垦鑫达科技有限公司 | Intelligent Bluetooth control system |
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