CN2580565Y - Audio/MP3 changing device - Google Patents
Audio/MP3 changing device Download PDFInfo
- Publication number
- CN2580565Y CN2580565Y CN 02249436 CN02249436U CN2580565Y CN 2580565 Y CN2580565 Y CN 2580565Y CN 02249436 CN02249436 CN 02249436 CN 02249436 U CN02249436 U CN 02249436U CN 2580565 Y CN2580565 Y CN 2580565Y
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- digital audio
- digital
- audio
- player
- audio signal
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Abstract
The utility model relates to an AUDIO/MP3 converting device. The utility model comprises a digital audio processor, a keyboard, a display screen, a memory, an output USB interface, a digital audio signal input interface, an analog audio signal input interface, [an] analog audio preposition processing circuit and an A/D converter, wherein, the keyboard, the display screen, the memory and the output USB interface are connected with corresponding ends of the digital audio processor, and the digital audio signal input interface is connected with the digital signal input end of the digital audio processor. The utility model can conduct digitized processing of an analog audio signal and a digital audio signal which are converted into digital quantity, and then the analog audio signal and the digital audio signal are converted into MP3 coding formats and stored in a FLASH card of a detachable MP3 player or directly unloaded to the MP3 player through a USB interface. The utility model makes full use of traditional resources of tone sources and downloading of free tone sources, reduces the usage cost of the MP3 player and benefits for the popularization and application of the MP3 player.
Description
Technical field
The utility model relates to signal processing technology, specifically is a kind of AUDIO/MP3 converter.
Background technology
The source of sound of present MP3 player is single, can only play by the computer down-load music, can not utilize existing a large amount of source of sound resource, the use cost height.Music signal can easily not obtain at any time, has greatly limited popularizing of MP3 player.
Summary of the invention
In view of MP3 player the problems referred to above in existence aspect the sound signal source, the utility model proposes a kind of AUDIO/MP3 converter, be used for traditional simulated audio signal is become the MP3 format coding with the digital audio and video signals treatment conversion, use for the MP3 player.
This AUDIO/MP3 conversion equipment comprises: digital audio processor, the removable FLASH card of the supervisory keyboard that is connected with the digital audio processor respective end, display screen, storer (SRAM) and numerical data output USB interface or MP3; The digital audio and video signals input interface, this interface is connected to the digital signal input end of digital audio processor; And, simulated audio signal input interface, analogue audio frequency preposing signal process circuit and A/D converter, A/D converter is connected between simulated audio signal preposing signal process circuit and the digital audio processor.Also be connected to digital signal decoder between digital audio and video signals input interface and the digital audio processor.Common simulated audio signal at first passes through pre-process, mould/number conversion, after carrying out pulse code (PCM) or differential pulse coding (DPCM) or continuous variable incremental encoding (CVSD) or linear predictive coding (LPC) or other high-level efficiency coding again, again with MP3 format coding, and store in the FLASH card of detachable MP3 player or and directly dump to the MP3 player by USB interface.
The digital audio and video signals of output such as CD, VCD, DVD through after the data processing, is converted to the MP3 coded format again, store in the FLASH card of detachable MP3 player or and directly dump to the MP3 player by USB interface.
This AUDIO/MP3 conversion equipment has following advantage:
By the AUDIO/MP3 conversion equipment, the MP3 player can obtain music download from existing any source of sound, has enlarged the source of sound of MP3 player.
Making full use of of tradition source of sound resource, the download of free source of sound greatly reduces the use cost of MP3 player, uses conveniently, helps the popularization and application of MP3.Essential condition-computer as MP3 will no longer become MP3 use bottleneck.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the embodiment circuit diagram;
Fig. 3 is its exemplary embodiments structural drawing.
Embodiment
Below in conjunction with the embodiment accompanying drawing the utility model is described in detail.
Referring to Fig. 1, Fig. 2, this AUDIO/MP3 conversion equipment mainly comprises: the numerical data input interface, digital signal decoder, the simulated audio signal input interface, the analogue audio frequency preposing signal process circuit, digital audio processor (DSP/MCU), numerical data output USB interface, FLASH card, supervisory keyboard, parts such as LCD display and power supply.Wherein the digital audio processor chip is the digital signal processor of band microprocessor function, and USB interface, FLASH card, storer (SRAM) supervisory keyboard and LCD show the corresponding port that is connected to digital signal processor respectively.
In specific product, according to this device of client's needs the removable FLASH card of USB interface or MP3 can only be set, also USB interface and FLASH card can be set simultaneously, the FLASH card can have a plurality of.The realization of its function can by but be not limited to keyboard input and LCD and show and control.
Connect the analogue audio frequency preposing signal process circuit between simulated audio signal input interface and the A/D converter, the digital signal input digit audio process of A/D converter output carries out corresponding digital to be handled, convert the MP3 format coding to, dump to by the FLASH card in the FLASH card of detachable MP3 player, or directly dump to the MP3 player by USB interface.
Be connected to digital signal decoder between digital audio and video signals input interface and the digital audio processor.The digital audio and video signals that enters from the digital audio and video signals input interface is directly or by after the digital signal decoder decoding, after delivering to the digital audio processor data processing, convert the MP3 coded format again to, store in the FLASH card of detachable MP3 player or and directly dump to the MP3 player by USB interface.
Implement circuit diagram 2 with reference to the typical case, the simulated audio signal processing (U10) of this AUDIO/MP3 conversion equipment can be adopted the BA3308 chip of ROHM company etc.; A/D converter and digital signal decoding (U3) can adopt the TLV5580 chip of TEXAS company; Static memory SRAM (U2) can adopt the SRM2564 of EPSON company etc.; U1 is the digital signal processor with microprocessor function, as DNS0201 chip of applicant's independent development etc.The 23-26 pin of U1 meets USB interface J2, CON 22P be the LCD screen interface that is connected to the U1 display port; U5, U6 all are that voltage is adjusted IC; U7, U11 are logic gate IC.3 * 3 keypad is connected with the corresponding I/O port of U1.
19 ends that 20 ends that the digital audio and video signals of equipment such as computer, sound equipment or TV output is input to U3 carry out digital signal decoding or are directly inputted to U1 carry out digital signal processing; The stereo simulating signal of equipment such as computer, sound equipment or TV output is input to the 2nd, the 8th end of U10 through C45, C46, in U10, carry out ALC control, preposition amplification and noise suppression are handled, the the 3rd, the 7th end output from U10, be input to the 16th of U3 through R20, R21,19 ends carry out being input among the U1 after the digital-to-analog conversion in U3 again.U1 is the digital signal processor with microprocessor function, the digital audio and video signals of input is discerned (or decode earlier to digital signal) automatically, after being converted to MP3 format by certain algorithm, dumping in the FLASH card of detachable MP3 player or and directly dump to the MP3 player by USB interface.
Fig. 3 is its exemplary embodiments structural drawing.Comprise housing 1, pcb board places in the housing 1; Numerical data input interface 5, left and right sides simulated audio signal input interface 2,3, numerical data output USB interface 7 and FLASH card 6 are loaded on the front of housing, and outlet 4 can be contained in the side, and LCD display and supervisory keyboard are positioned at above the housing.
During use, digital audio and video signals from CD, VCD, DVD, PC etc. is imported from numerical data input interface 5, or the sound signal of walkman, TV, sound equipment etc. is from 2,3 inputs of simulated audio signal input interface, after corresponding data processing, convert the MP3 format coded signal to, store into by FLASH card 6 in the FLASH card of detachable MP3 player, or directly dump to the MP3 player by USB interface 7.Adopt this AUDIO/MP3 conversion equipment, the traditional source of sound that the source of sound of MP3 player can be expanded reduces the use cost of MP3 player, helps the popularization and application of MP3.
Claims (5)
1, a kind of AUDIO/MP3 conversion equipment is characterized in that comprising: digital audio processor, the removable FLASH card of the supervisory keyboard that is connected with the digital audio processor respective end, display screen, storer and numerical data output USB interface or MP3; The digital audio and video signals input interface, this interface is connected to the digital signal input end of digital audio processor; And, simulated audio signal input interface, analogue audio frequency preposing signal process circuit and mould/number conversion, mould/number conversion is connected between simulated audio signal preposing signal process circuit and the digital audio processor.
2, according to the described AUDIO/MP3 converter of claim 1, it is characterized in that: be connected to digital signal decoder between digital audio and video signals input interface and the digital audio processor.
3, AUDIO/MP3 conversion equipment according to claim 1 and 2 is characterized in that: be provided with at least one FLASH card, the FLASH card is connected to the output terminal of digital audio processor.
4, AUDIO/MP3 conversion equipment according to claim 1 is characterized in that: described digital audio processor adopts the DNS0201 chip.
5. as the said AUDIO/MP3 converter of claim 1, it is characterized in that: described display screen adopts LCD to show.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249436 CN2580565Y (en) | 2002-11-08 | 2002-11-08 | Audio/MP3 changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249436 CN2580565Y (en) | 2002-11-08 | 2002-11-08 | Audio/MP3 changing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2580565Y true CN2580565Y (en) | 2003-10-15 |
Family
ID=33719867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02249436 Expired - Fee Related CN2580565Y (en) | 2002-11-08 | 2002-11-08 | Audio/MP3 changing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2580565Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100351820C (en) * | 2005-09-30 | 2007-11-28 | 迈世亚（北京）科技有限公司 | Method for duplicating musical composition in CD into MP3 realplayer |
-
2002
- 2002-11-08 CN CN 02249436 patent/CN2580565Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100351820C (en) * | 2005-09-30 | 2007-11-28 | 迈世亚（北京）科技有限公司 | Method for duplicating musical composition in CD into MP3 realplayer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |