CN203070758U - Audio recording and playing apparatus - Google Patents
Audio recording and playing apparatus Download PDFInfo
- Publication number
- CN203070758U CN203070758U CN 201220748848 CN201220748848U CN203070758U CN 203070758 U CN203070758 U CN 203070758U CN 201220748848 CN201220748848 CN 201220748848 CN 201220748848 U CN201220748848 U CN 201220748848U CN 203070758 U CN203070758 U CN 203070758U
- Authority
- CN
- China
- Prior art keywords
- audio
- recording
- iis
- digital
- interface
- 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 - Lifetime
Links
Images
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
The utility model relates to an audio recording and playing apparatus. The apparatus comprises a control module, a playing module and a recording storage module. The control module includes a microprocessor, a digital-analog converter, an IIS (Inter-IC Sound) bus interface, a data memory and an external memory conversion interface, wherein control terminals of the microprocessor is connected with the digital-analog converter, the IIS bus interface, the data memory and the external memory conversion interface; an input terminal of the IIS bus interface receives an external IIS audio data stream, output terminals of the IIS bus interface are respectively connected with an IIS interface of the digital-analog converter and an input terminal of the data memory, an output terminal of the data memory is connected with an input terminal of the external memory conversion interface, an output terminal of the external memory conversion interface is connected with an input terminal of the recording storage module, and a data output terminal of the digital-analog converter is connected with the audio playing module. According to the audio recording and playing apparatus provided by the utility model, audio files can be recorded while being played, and the cost of peripheral circuits of the control module is effectively reduced, so that the apparatus has the advantages of low cost.
Description
Technical field
The utility model relates to the voice data processing technology field, relates in particular to a kind of audio recording and reproducing device.
Background technology
Existing audio-frequence player device is in the audio frequency playing process, need an audio decoder chip or digital signal processor (DSP, be Digital Signal Processor) as core cell, decoding or coding are from the external audio file, and the control data path is play.Audio decoder chip or digital signal processor read out the music file that is stored in USB flash disk, SD card or other media, decode, and with decoded IIS(Inter-IC Sound Bus) digital serial audio data stream is sent to the digital-to-analogue conversion module, obtains the appreciable sound of people's ear through filtering.Audio file formats can be MP3, WMA and WAVE etc., and audio decoder chip or digital signal processor are used for the audio file of the above-mentioned form of decoding and produce the IIS numeral serial voice data that is fit to transmission and plays realizing music.
But existing audio-frequence player device often can only be realized the playing function of audio file, but can not carry out recording and storing to audio file when playing.Be the function that realization is recorded while playing, many equipment increase complicated peripheral circuit with the recording and storing function of realization audio file, but peripheral circuit has increased the cost of manufacture of entire equipment, also improves the complexity of circuit design.
Summary of the invention
Technical problem to be solved in the utility model is the problem that has cost height, complex circuit designs at existing audio-frequence player device when realizing while playing recording and storing audio file, provide a kind of circuit design simple, with low cost, can realize the audio recording and reproducing device of the recording and storing audio file while playing.
For addressing the above problem, the technical solution of the utility model is:
A kind of audio recording and reproducing device, described recording/displaying device comprises control module, be used for the audio playing module of displaying audio file and be used for the recording and storing module of recording and storing audio file, and control module receives exterior I IS audio data stream and exterior I IS audio data stream is processed into respectively and meets the play signal that audio playing module plays and the storage signal that meets the recording and storing module stores; Described control module comprises microprocessor, digital to analog converter, IIS bus interface, is used for the data-carrier store of buffer memory and string and conversion exterior I IS audio data stream and converts the external memory storage translation interface that meets the recording and storing module stores to for the exterior I IS audio data stream with data-carrier store that the control end of microprocessor links to each other with digital to analog converter, IIS bus interface, data-carrier store and external memory storage translation interface respectively; The input end of IIS bus interface receives exterior I IS audio data stream, the output terminal of IIS bus interface links to each other with the IIS interface of digital to analog converter and the input end of data-carrier store respectively, the output terminal of data-carrier store links to each other with the input end of external memory storage translation interface, the output terminal of external memory storage translation interface links to each other with the input end of recording and storing module, and the data output end of digital to analog converter links to each other with audio playing module.
Control module receives exterior I IS audio data stream by the IIS bus interface, under the control of microprocessor, converts exterior I IS audio data stream the play signal of simulation to by the digital to analog converter in the control module, and is realized playing by audio playing module; Simultaneously, data-carrier store in the control module carries out buffer memory to outside IIS audio data stream and realizes that the serial voice data is to the conversion of parallel audio data, data after the conversion in the recording and storing module, realize the recording and storing of exterior I IS audio data stream by external memory storage translation interface recording and storing.
Be compared to prior art, audio recording and reproducing device of the present utility model realizes that by the data-carrier store in the control module and external memory storage translation interface exterior I IS audio data stream is in the following recording and storing work of the situation of broadcast, realized audio file while playing the recording and storing function, effectively reduced the peripheral circuit cost of control module, it is simple and control advantage easily to have with low cost, circuit design.
Preferably, described data-carrier store is internal storage or the scrambler of control module.Internal storage is buffer memory and string and conversion exterior I IS audio data stream directly, scrambler can compress with the sampling rate adjustment outside IIS voice data to be handled, and makes by the exterior I IS audio data stream of internal storage and coder processes and is convenient to store in the recording and storing module.
Preferably, described recording/displaying device also comprises for the audio data stream extraction module that extracts exterior I IS audio data stream, the audio data stream extraction module comprises demoder and analog to digital converter, the input end of demoder is connected with storer, the IIS interface of demoder links to each other with the input end of IIS bus interface, the input end of analog to digital converter is connected with microphone, and the IIS interface of analog to digital converter links to each other with the input end of IIS bus interface.The audio data stream extraction module is respectively applied to extract the simulated audio signal in the digital audio and video signals and microphone in the storer, and above-mentioned two kinds of signals are processed into exterior I IS audio data stream by demoder and analog to digital converter respectively, make the signal of handling meet the host-host protocol of IIS bus interface.
Preferably, described audio playing module comprises wave filter and the loudspeaker that is attached thereto, and the input end of wave filter links to each other with the data output end of digital to analog converter.
Preferably, described recording and storing module is SD card, USB flash disk or Nandflash memory device.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the utility model audio recording and reproducing device.
Fig. 2 is the audio data stream extraction module schematic block circuit diagram of the utility model audio recording and reproducing device.
Embodiment
Further describe the utility model below in conjunction with drawings and Examples, but protection domain of the present utility model is not limited to this.
With reference to Fig. 1, audio recording and reproducing device of the present utility model comprises control module, audio playing module and recording and storing module, audio playing module is used for displaying audio file, the recording and storing module is used for the recording and storing audio file, and control module receives exterior I IS audio data stream and exterior I IS audio data stream is processed into the play signal that meets the audio playing module broadcast and the storage signal that meets the recording and storing module stores respectively.
Control module comprises microprocessor, digital to analog converter, IIS bus interface, data-carrier store and external memory storage translation interface, microprocessor is the device Master Control Center, digital to analog converter is used for digital signal to the conversion of simulating signal, data-carrier store is used for buffer memory and string and conversion exterior I IS audio data stream, the external memory storage translation interface converts the exterior I IS audio data stream in the data-carrier store to storage signal, the external memory storage translation interface is consistent with the communication protocol of recording and storing module, to finish the data storage.Data-carrier store is internal storage or scrambler, and internal storage is buffer memory and string and conversion exterior I IS audio data stream directly, and scrambler can compress with the sampling rate adjustment outside IIS voice data to be handled.The IIS bus interface is a kind of digital audio bus agreement of serial, is used for the data transmission between the audio frequency apparatus, and the IS serial data bus has four signal: MCLK, BCLK, WS and DATA.BCLK is bit clock, i.e. each data of corresponding DAB, and the frequency of bit clock is 2* sample frequency * sampling resolution; WS is the frame clock, is used for the data of switching right and left sound channel, and the frequency of WS equals sample frequency; MCLK is system clock, uses mainly as system synchronization, and DATA is the digital audio-frequency data of representing with two's complement.
The control end of microprocessor links to each other with digital to analog converter, IIS bus interface, data-carrier store and external memory storage translation interface respectively, realizes master control.Control module receives exterior I IS audio data stream by the IIS bus interface, the input end of IIS bus interface receives exterior I IS audio data stream, the output terminal of IIS bus interface links to each other with the IIS interface of digital to analog converter and the input end of data-carrier store respectively, realizes that exterior I IS voice data flows to the data transmission of digital to analog converter and data-carrier store.The data output end of digital to analog converter links to each other with audio playing module, and under the control of microprocessor, digital to analog converter converts exterior I IS audio data stream the play signal of simulation to, and is realized playing by audio playing module.The output terminal of data-carrier store links to each other with the input end of external memory storage translation interface, the output terminal of external memory storage translation interface links to each other with the input end of recording and storing module, outside IIS audio data stream is carried out buffer memory and realize that the serial voice data is to the conversion of parallel audio data by internal storage, or by scrambler outside IIS voice data is compressed with the sampling rate adjustment and to handle, make by the data after the data-carrier store conversion and pass through external memory storage translation interface recording and storing in the recording and storing module, realize the recording and storing of exterior I IS audio data stream.
With reference to Fig. 2, described recording/displaying device also comprises for the audio data stream extraction module that extracts exterior I IS audio data stream, the audio data stream extraction module comprises demoder and analog to digital converter, the input end of demoder is connected with storer, storer is used for storing audio files, the IIS interface of demoder links to each other with the input end of IIS bus interface, and the input end of analog to digital converter is connected with microphone, and the IIS interface of analog to digital converter links to each other with the input end of IIS bus interface.The audio data stream extraction module is respectively applied to extract the simulated audio signal in the digital audio and video signals and microphone in the storer, and above-mentioned two kinds of signals are processed into exterior I IS audio data stream by demoder and analog to digital converter respectively, make the signal of handling meet the host-host protocol of IIS bus interface.Described audio playing module comprises wave filter and the loudspeaker that is attached thereto, and the input end of wave filter links to each other with the data output end of digital to analog converter, and the recording and storing module is SD card, USB flash disk or Nandflash memory device.
Start working behind the device electrification reset, microprocessor provides system clock MCLK to digital to analog converter, audio data stream extraction module and data-carrier store, by the synchronous digital to analog converter of system clock MCLK, audio data stream extraction module and data-carrier store, data-carrier store adopts a kind of in internal storage or the scrambler.In whole device, the transmitting terminal of IIS bus interface and take over party use same system clock, can prevent effectively that noise from producing.Microprocessor control digital to analog converter, data-carrier store and external memory storage translation interface are in running order, digital to analog converter and data-carrier store all are in exterior I IS audio data stream accepting state, at this moment, digital to analog converter can produce bit clock BCLK and sampling frequency signal WS, and the audio data stream extraction module produces exterior I IS audio data stream according to bit clock BCLK and sampling frequency signal WS; Internal storage according to bit clock BCLK and sampling frequency signal WS exterior I IS audio data stream string and transform, buffer memory, or by scrambler according to bit clock BCLK and sampling frequency signal WS to outside IIS audio data stream to compressing and the sampling rate adjustment is handled, above-mentioned data after the data-carrier store conversion are sent to recording and storing in the recording and storing module by the external memory storage translation interface.Meanwhile, after digital to analog converter obtains exterior I IS audio data stream, make supplied with digital signal convert the play signal of simulation to, play signal is play by loudspeaker by behind the wave filter of audio playing module.By said process realized audio file while playing the recording and storing function, effectively reduced the peripheral circuit cost of control module.
In the above-mentioned explanation, all special instructions that do not add all adopt routine techniques means of the prior art.
Claims (5)
1. audio recording and reproducing device, it is characterized in that, described recording/displaying device comprises control module, be used for the audio playing module of displaying audio file and be used for the recording and storing module of recording and storing audio file, and control module receives exterior I IS audio data stream and exterior I IS audio data stream is processed into respectively and meets the play signal that audio playing module plays and the storage signal that meets the recording and storing module stores;
Described control module comprises microprocessor, digital to analog converter, IIS bus interface, is used for the data-carrier store of buffer memory and string and conversion exterior I IS audio data stream and converts the external memory storage translation interface that meets the recording and storing module stores to for the exterior I IS audio data stream with data-carrier store that the control end of microprocessor links to each other with digital to analog converter, IIS bus interface, data-carrier store and external memory storage translation interface respectively;
The input end of IIS bus interface receives exterior I IS audio data stream, the output terminal of IIS bus interface links to each other with the IIS interface of digital to analog converter and the input end of data-carrier store respectively, the output terminal of data-carrier store links to each other with the input end of external memory storage translation interface, the output terminal of external memory storage translation interface links to each other with the input end of recording and storing module, and the data output end of digital to analog converter links to each other with audio playing module.
2. audio recording and reproducing device according to claim 1 is characterized in that, described data-carrier store is internal storage or the scrambler of control module.
3. audio recording and reproducing device according to claim 1, it is characterized in that, described recording/displaying device also comprises for the audio data stream extraction module that extracts exterior I IS audio data stream, the audio data stream extraction module comprises demoder and analog to digital converter, the input end of demoder is connected with storer, the IIS interface of demoder links to each other with the input end of IIS bus interface, and the input end of analog to digital converter is connected with microphone, and the IIS interface of analog to digital converter links to each other with the input end of IIS bus interface.
4. audio recording and reproducing device according to claim 1 is characterized in that, described audio playing module comprises wave filter and the loudspeaker that is attached thereto, and the input end of wave filter links to each other with the data output end of digital to analog converter.
5. audio recording and reproducing device according to claim 1 is characterized in that, described recording and storing module is SD card, USB flash disk or Nandflash memory device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748848 CN203070758U (en) | 2012-12-29 | 2012-12-29 | Audio recording and playing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748848 CN203070758U (en) | 2012-12-29 | 2012-12-29 | Audio recording and playing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203070758U true CN203070758U (en) | 2013-07-17 |
Family
ID=48769522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220748848 Expired - Lifetime CN203070758U (en) | 2012-12-29 | 2012-12-29 | Audio recording and playing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203070758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444233A (en) * | 2019-07-02 | 2019-11-12 | 福建新大陆通信科技股份有限公司 | A kind of the audio reception playback method and system of number sound shadow amusement equipment |
-
2012
- 2012-12-29 CN CN 201220748848 patent/CN203070758U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444233A (en) * | 2019-07-02 | 2019-11-12 | 福建新大陆通信科技股份有限公司 | A kind of the audio reception playback method and system of number sound shadow amusement equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102667924B (en) | Selectivity power is utilized to control the method and system of decoding to voice data | |
| CN102355309A (en) | Method and apparatus for realization of Bluetooth stereophonic sound with support of a plurality of sampling rates | |
| CN204993749U (en) | USB earphone and high -fidelity audio playback system | |
| CN203070758U (en) | Audio recording and playing apparatus | |
| CN107484077A (en) | A kind of implementation method of automobile audio Karaoke | |
| CN107507617A (en) | A kind of system and method realized DSD audios and solved firmly | |
| CN202584718U (en) | Digital audio compression device | |
| CN201134257Y (en) | On-vehicle DVD system | |
| CN205751532U (en) | A kind of lossless hi-fi music based on DSP is play and audio process | |
| CN202102715U (en) | Multi-carrier real-time play controlling system for audio media | |
| CN201216010Y (en) | Microphone with echo eliminating function equipped with USB sound card and loudspeaker | |
| CN101034549A (en) | Sound recording and storing method and video/audio device | |
| CN1897110A (en) | High-quality audio-frequency signal coverting playback device with solid memory as media | |
| CN201946291U (en) | Sound mixing console with voice recording function | |
| CN206759670U (en) | A kind of microphone | |
| CN204031431U (en) | A kind of dynamic effect picture storage and reproduce system | |
| CN206963050U (en) | A kind of I2S audio codec circuitries | |
| CN102623040B (en) | Data synthesizing and playing system and method | |
| CN205195946U (en) | DAC sound equipment | |
| CN206193757U (en) | AAC digital audio frequency decoding handles integrated circuit board | |
| CN204857133U (en) | Guide's machine based on singlechip | |
| CN202353808U (en) | Portable loudspeaker | |
| CN212907067U (en) | Voice signal noise reduction device | |
| CN100508057C (en) | Audio playing device and audio playing method | |
| CN209017278U (en) | A kind of sound system with the enhancing of DSP audio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
|
| CX01 | Expiry of patent term |