CN202584719U - Wireless audio acquisition card - Google Patents
Wireless audio acquisition card Download PDFInfo
- Publication number
- CN202584719U CN202584719U CN 201120544813 CN201120544813U CN202584719U CN 202584719 U CN202584719 U CN 202584719U CN 201120544813 CN201120544813 CN 201120544813 CN 201120544813 U CN201120544813 U CN 201120544813U CN 202584719 U CN202584719 U CN 202584719U
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- CN
- China
- Prior art keywords
- audio signal
- audio
- dsp
- data
- arm
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a wireless audio acquisition card which includes a microphone which acquires an analog audio signal, an operational amplifier which amplifies the acquired audio signal, a filter which filters the amplified audio signal, an A/D converter which converts the filtered analog audio signal into a digital audio signal, a DSP which compresses the digital audio signal, an FPGA which stores and uploads the compressed audio signal to a PC, an FLASH which stores a system program, an SRAM which is used for the data buffer memory, an SD memory card which stores the acquired audio signal, and an audio playing unit which plays the acquired audio data. The wireless audio acquisition card carries out the signal transmission via a wireless network, and the wireless audio acquisition card can be used conveniently in a place where the geographical conditions are poor and the wire arrangement is inconvenient.
Description
Technical field
The utility model relates to electronic technology field, and a kind of ANTENNAUDIO capture card is provided.
Background technology
Data acquisition technology is a basic practicality technology, has been widely used in every field such as measurement, detection, control, diagnosis.Over nearly 20 years, data acquisition technology has obtained development at full speed owing to adopted series of new techniques such as microcomputer.Along with electronic technology, the fast development of the computer technology and the communication technology, the way with digital signal processing detects both at home and abroad; Gather, analyze, handling various data has become a kind of trend; And the method for utilization digital signal processing is carried out real-time analysis to the sound signal of collection in worksite; Be the prediction of the field conditions analysis foundation that offers precise data, existing oneself uses through having obtained at aspects such as fault detect, disaster prevention, military affairs widely, and has obtained good effect and achievement.The utility model provides a kind of audio collection card based on DSP and FPGA, can gather high-quality digital audio-frequency data fast and effectively, and adopts damascene structures, be convenient to produce, and it is simple in structure, and is with low cost.
The utility model content
It is a kind of simple in structure that the purpose of the utility model is to provide, and a kind of ANTENNAUDIO with low cost is adopted card.
The utility model is for realizing that above-mentioned purpose adopts following technical scheme:
A kind of ANTENNAUDIO capture card, its composition comprises:
Microphone: be used to gather simulated audio signal;
Operational amplifier: be used for the analogue audio frequency of input is amplified;
Wave filter: the simulated audio signal to after amplifying carries out filtering;
A/D converter: convert filtered audio signal to digital audio and video signals;
DSP: to digital encoding/decoding audio signal, compression, decompress(ion);
ARM:, be responsible for external communication, transmission data and control peripheral devices as main control unit;
FPGA: control phonetic codec chip, the string and the conversion of control speech data, and the exchanges data between the responsible DSP, ARM;
FLASH: be used for the storage system program;
SRAM: be used for metadata cache;
SD storage card: be used for the sound signal that storage of collected arrives;
Audio playing unit: the audio playing unit that the voice data that collects is play;
GPRS module: send the data that collect to PC through GPRS network;
Said microphone, operational amplifier, wave filter, A/D converter are linked in sequence; Said A/D converter, audio playing unit, SD storage card and FLASH all are connected with DSP; Said ARM is connected with FPGA with SRAM; Said ARM is connected with the GPRS module; Said DSP is connected with FPGA.
[0005]The utlity model has following beneficial effect:
The utility model provides a kind of audio collection card of the structure based on DSP and FPGA and GPRS wireless network transmissions, can gather high-quality digital audio-frequency data fast and effectively, and adopts damascene structures; Be convenient to produce; And it is simple in structure, and is with low cost, and it carries out the signal transmission through wireless network; Poor at geographical environmental condition, the inconvenient place of wiring can be convenient to use.
Description of drawings
Fig. 1 is the block diagram of the utility model.
Embodiment
A kind of ANTENNAUDIO capture card, its composition comprises:
Microphone: be used to gather simulated audio signal;
Operational amplifier: be used for the analogue audio frequency of input is amplified;
Wave filter: the simulated audio signal to after amplifying carries out filtering;
A/D converter: convert filtered audio signal to digital audio and video signals;
DSP: to digital encoding/decoding audio signal, compression, decompress(ion);
ARM:, be responsible for external communication, transmission data and control peripheral devices as main control unit;
FPGA: control phonetic codec chip, the string and the conversion of control speech data, and the exchanges data between the responsible DSP, ARM;
FLASH: be used for the storage system program;
SRAM: be used for metadata cache;
SD storage card: be used for the sound signal that storage of collected arrives;
Audio playing unit: the audio playing unit that the voice data that collects is play;
The GPRS module sends the data that collect to PC through GPRS network;
Said microphone, operational amplifier, wave filter, A/D converter are linked in sequence; Said A/D converter, audio playing unit, SD storage card and FLASH all are connected with DSP; Said ARM is connected with FPGA with SRAM; Said ARM is connected with the GPRS module; Said DSP is connected with FPGA.
The utility model provides a kind of audio collection card of the structure based on DSP and FPGA and GPRS wireless network transmissions, can gather high-quality digital audio-frequency data fast and effectively, and adopts damascene structures; Be convenient to produce; And it is simple in structure, and is with low cost, and it carries out the signal transmission through wireless network; Poor at geographical environmental condition, the inconvenient place of wiring can be convenient to use.
Claims (1)
1. ANTENNAUDIO capture card, its composition comprises:
Microphone: be used to gather simulated audio signal;
Operational amplifier: be used for the analogue audio frequency of input is amplified;
Wave filter: the simulated audio signal to after amplifying carries out filtering;
A/D converter: convert filtered audio signal to digital audio and video signals;
DSP: to digital encoding/decoding audio signal, compression, decompress(ion);
ARM:, be responsible for external communication, transmission data and control peripheral devices as main control unit;
FPGA: control phonetic codec chip, the string and the conversion of control speech data, and the exchanges data between the responsible DSP, ARM;
FLASH: be used for the storage system program;
SRAM: be used for metadata cache;
SD storage card: be used for the sound signal that storage of collected arrives;
Audio playing unit: the audio playing unit that the voice data that collects is play;
GPRS module: send the data that collect to PC through GPRS network;
Said microphone, operational amplifier, wave filter, A/D converter are linked in sequence; Said A/D converter, audio playing unit, SD storage card and FLASH all are connected with DSP; Said ARM is connected with FPGA with SRAM; Said ARM is connected with the GPRS module; Said DSP is connected with FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120544813 CN202584719U (en) | 2011-12-23 | 2011-12-23 | Wireless audio acquisition card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120544813 CN202584719U (en) | 2011-12-23 | 2011-12-23 | Wireless audio acquisition card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202584719U true CN202584719U (en) | 2012-12-05 |
Family
ID=47254107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120544813 Expired - Fee Related CN202584719U (en) | 2011-12-23 | 2011-12-23 | Wireless audio acquisition card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202584719U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617800A (en) * | 2013-11-28 | 2014-03-05 | 中国传媒大学 | Portable multi-channel voice data collector based on ARM and FPGA |
| CN110312189A (en) * | 2019-06-10 | 2019-10-08 | 安徽沧浪网络科技有限公司 | A kind of audio collecting system based on wireless self-networking |
| CN110321097A (en) * | 2019-06-10 | 2019-10-11 | 安徽沧浪网络科技有限公司 | A kind of audio transmission system based on wireless self-networking |
-
2011
- 2011-12-23 CN CN 201120544813 patent/CN202584719U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617800A (en) * | 2013-11-28 | 2014-03-05 | 中国传媒大学 | Portable multi-channel voice data collector based on ARM and FPGA |
| CN110312189A (en) * | 2019-06-10 | 2019-10-08 | 安徽沧浪网络科技有限公司 | A kind of audio collecting system based on wireless self-networking |
| CN110321097A (en) * | 2019-06-10 | 2019-10-11 | 安徽沧浪网络科技有限公司 | A kind of audio transmission system based on wireless self-networking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20131223 |