CN2691016Y - Computer active speaker with MP3 playing function - Google Patents
Computer active speaker with MP3 playing function Download PDFInfo
- Publication number
- CN2691016Y CN2691016Y CN 200420043624 CN200420043624U CN2691016Y CN 2691016 Y CN2691016 Y CN 2691016Y CN 200420043624 CN200420043624 CN 200420043624 CN 200420043624 U CN200420043624 U CN 200420043624U CN 2691016 Y CN2691016 Y CN 2691016Y
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- computer
- dsp control
- playing function
- player
- speaker
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- Expired - Fee Related
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Abstract
The utility model provides a computer active speaker with MP3 playing function, comprising a main speaker and an auxiliary speaker. A power amplifier circuit board is arranged in the main speaker. An MP3 playing circuit is arranged in the main speaker. The MP3 playing circuit comprises a DSP control / decipher unit. The periphery of the DSP control / decipher unit is respectively connected with a memorizing body, an infrared receiving head, a USB interface and an acoustic frequency interface. The output of the DSP control / decipher unit is connected with the power amplification circuit. An infrared remote-controller used for controlling the working of the DSP control / decipher unit is also arranged. The utility model organically combines the hardware MP3 player and the computer active speaker. If the computer is in the shutdown status, the MP3 music files can also be played. The cost is low and the operation is simple. The computer active speaker with MP3 playing function can be widely used for the medium playing of the popular desk type computer.
Description
Technical field
The utility model belongs to computer active audio amplifier technical field, specifically is a kind of computer active audio amplifier of the MP3 of having playing function.
Background technology
MP3 (being the abbreviation of MPEG-1 AudioLayer-3) is a kind of digital audio format, it adopts the digital compression technology (compression ratio can reach 12: 1) of height ratio that music file is compressed, and, form the MP3 music file through behind the MP3 encoding software coding.Because MP3 music file tonequality is better, file size is very little, conveniently carries and spreads through the internet, and therefore is accepted one of multimedia music form that becomes main flow very soon.
Play the MP3 music in the past or under Windows, play, or download to become and take formula MP3 player and appreciate with software decoding.The audio input signal of computer active audio amplifier is provided by computer, and active audio amplifier absence of audio source when shut down of computer is in idle state and causes certain wasting of resources.Utilize computer active audio amplifier better tone quality at present, under the shut down of computer state, use a teleswitch and play-over the MP3 music and do not see that relevant document discloses.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, and a kind of computer active audio amplifier that can play the MP3 music is provided, and the computer active audio amplifier is used as the good MP3 player of tonequality simultaneously.
The utlity model has the computer active audio amplifier of MP3 playing function, comprise main sound box and auxiliary audio amplifier, the power amplifier plate is arranged in the main sound box, it is characterized in that: the MP3 player circuit is set in the main sound box, the input of MP3 player circuit connects USB interface and infrared receiving terminal, and the output of MP3 player connects audio power amplifier circuit; Also dispose an Infrared remote controller.DSP control/decoding unit periphery can connect memory body expansion mouth, makes the user oneself expand memory body, and the inside and outside memory body can be jointly as the document storage medium.
The utility model organically combines hardware MP3 player and computer active audio amplifier, utilizing the computer expert to cross USB interface is transferred to the MP3 music file in the memory body of MP3 player, even computer is in off-mode, the stored MP3 music file of MP3 player plays in the control active audio amplifier that also can use a teleswitch.It has utilized the good characteristics of computer active audio amplifier tonequality, and is with low cost, simple to operate, can be widely used in the media play of popular desktop computer.
Description of drawings
Fig. 1 is that its structure is used synoptic diagram with being connected with computer;
Fig. 2 is its electric functional-block diagram;
Fig. 3 is the embodiment circuit diagram of DSP control/decoding unit among Fig. 2;
Fig. 4 is the embodiment circuit diagram of memory body among Fig. 2;
Fig. 5 is the embodiment circuit diagram of memory body expansion mouth among Fig. 2.
Embodiment
Be described further below in conjunction with accompanying drawing.
As shown in Figure 1, originally the computer active audio amplifier that has the MP3 playing function, comprise main sound box 2 and two auxiliary audio amplifiers 1,4, the signal input part of auxiliary audio amplifier 1,4 is connected with main sound box 2, power amplifier plate and MP3 player circuit are arranged in the main sound box 2, the input of MP3 player circuit connects USB interface and infrared receiving terminal, and described infrared receiving terminal and LCD liquid crystal display 3 are installed on the panel of main sound box, also disposes an Infrared remote controller 6.During use, main sound box 2 is connected with host computer 5 with a tone frequency channel wire by a USB line, realizes the signal transmission between host computer 5 and the main sound box 2.Under computer operating system, the user can or directly be sent to the MP3 music file in the memory body of MP3 player of main sound box 2 inside by software, then, no matter computer is under the state of start or shutdown, the mp3 file that can deposit by telepilot 6 controls playing.
As shown in Figure 2, described MP3 player circuit comprises DSP control/decoding unit 23, DSP control/decoding unit 23 peripheries connect memory body 24, infrared receiving terminal 28, LCD liquid crystal display 29, USB interface 27 and audio interface 26 respectively, and the output of DSP control/decoding unit 23 connects audio power amplifier circuit 22.Described infrared receiving terminal 28 cooperates the work of control DSP control/decoding unit 23 with Infrared remote controller 6.
Described DSP control/decoding unit 23 peripheries also connect memory body expansion mouth 25, and the user can oneself expand memory body, and the memory external body of expansion and memory internal body can be jointly as the document storage media.
Fig. 3 is the embodiment circuit diagram of DSP control/decoding unit among Fig. 2.Chip U1 among Fig. 3 (STMP3410-100 chip) and peripheral circuit thereof constitute described DSP control/decoding unit, and 74,75 pins of U1 connect capacitor C 27, C26 respectively to ground, between 74,75 pins of U1 and meet crystal oscillator Y1, for U1 provides clock signal.80, the 81 pin circumscribed USB interfaces of U1 are used for carrying out communication with the USB interface of host computer, realize the transmission of data.62,65 pin of U1 are respectively the left and right sound channels input end of sound signal, and 62,65 pin external audio frequency interfaces are used for being connected with the audio signal output interface of host computer, realize the output of sound signal.
In the embodiment circuit diagram of memory body shown in Figure 4, adopt NADA_FLASH memory (U4) to do memory body, with reference to Fig. 3,4,29,30,31,32,41,42,43,44 pin of memory U4 are the I/O port, they respectively with the corresponding connection of 30,31,32,33,34,35,36,37 pin of DSP control/decoding chip U1.7,8,9,16,17,18,19 pin of U4 are control end, they respectively with the corresponding connection of 25,23,24,20,21,26,27 pin of DSP control/decoding chip U1.
In the embodiment circuit diagram of memory body expansion mouth shown in Figure 5; adopt MMC (MultiMediaCard Socket) socket U6 to do memory body expansion mouth; 3,6,12,13 pin of socket U6 connect inductance L 12 to ground; 4 pin of socket U6 connect inductance L 11 to power supply; meet filter capacitor C70 between 4 pin of socket U6 and 6 pin, 1 pin of U6 is that sheet choosing end, 5 pin are that clock signal terminal, 2 pin are that data input pin, 7 pin are that data output end, 10 pin are that write-protect end, 11 pin are the test side.With reference to Fig. 3,5,1,5,2,7,10,11 pin of socket U6 respectively with the corresponding connection of 16,3,1,2,8,12 pin of DSP control/decoding chip U1,1,5,2,7,10,11 pin of socket U6 connect respectively and draw resistance R 47, R48, R49, R50, R51, R52 to power supply.
Originally the computer active audio amplifier that has the MP3 playing function solidifies the memory body of a constant volume on circuit board, also be provided with the memory body extension socket in addition, and the user can insert the MMC memory card in the memory body extension socket, to store more music file.
Claims (4)
1, a kind of computer active audio amplifier with MP3 playing function, comprise main sound box and auxiliary audio amplifier, the power amplifier plate is arranged in the main sound box, it is characterized in that: the MP3 player circuit is set in the main sound box, the input of MP3 player circuit connects USB interface and infrared receiving terminal, and the output of MP3 player connects audio power amplifier circuit; Also dispose an Infrared remote controller.
2, according to the computer active audio amplifier with MP3 playing function of claim 1, it is characterized in that: described MP3 player circuit comprises DSP control/decoding unit, DSP control/decoding unit periphery connects memory body, infrared receiving terminal, LCD liquid crystal display, USB interface and audio interface respectively, and the output of DSP control/decoding unit connects audio power amplifier circuit.
3, according to the computer active audio amplifier with MP3 playing function of claim 2, it is characterized in that: DSP control/decoding unit periphery is connected with memory body expansion mouth.
4, according to the computer active audio amplifier with MP3 playing function of claim 1, it is characterized in that: the output of described MP3 player connects the LCD liquid crystal display, and described LCD liquid crystal display and infrared receiving terminal are installed on the panel of main sound box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420043624 CN2691016Y (en) | 2004-03-12 | 2004-03-12 | Computer active speaker with MP3 playing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420043624 CN2691016Y (en) | 2004-03-12 | 2004-03-12 | Computer active speaker with MP3 playing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2691016Y true CN2691016Y (en) | 2005-04-06 |
Family
ID=34671719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420043624 Expired - Fee Related CN2691016Y (en) | 2004-03-12 | 2004-03-12 | Computer active speaker with MP3 playing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2691016Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007048281A1 (en) * | 2005-10-27 | 2007-05-03 | Shuzhe Fang | New colum |
| WO2008025241A1 (en) * | 2006-08-23 | 2008-03-06 | Acme Research Limited | Remote control system of portable apparatus |
-
2004
- 2004-03-12 CN CN 200420043624 patent/CN2691016Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007048281A1 (en) * | 2005-10-27 | 2007-05-03 | Shuzhe Fang | New colum |
| WO2008025241A1 (en) * | 2006-08-23 | 2008-03-06 | Acme Research Limited | Remote control system of portable apparatus |
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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 |