CN104658591A

CN104658591A - Portable digital audio player

Info

Publication number: CN104658591A
Application number: CN201310611471.1A
Authority: CN
Inventors: 李韶远; 张雪辉
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2013-11-22
Filing date: 2013-11-22
Publication date: 2015-05-27

Abstract

The invention discloses a portable digital audio player. A digital audio decoding chip is used for decoding and playing MP3, WMA, and WAV audio files. The portable digital audio player comprises a master control module (1), a digital audio decoding module (2), an audio power amplifying module (3), an LCD module, a data storage module (5) and a power module (6). A new generation of embedded processor STM32F103VE is used as a master chip to combine with the digital audio decoding chip so as to completely finish the decoding playing function of an audio file. The player has the characteristics of being good in tone quality, friendly in interface and low in cost, and has a certain application and promotion value.

Description

Portable digital audio-frequency player

Technical field

The present invention relates to a kind of portable digital audio-frequency player, adopt flush bonding processor STM32F103VE of new generation as control core specifically, in conjunction with digital audio decoder chip VS1003, by the design of soft and hardware, the decoding jointly completing audio file is play.

Background technology

Digitizing technique is the trend of electronic product development, and current audio product adopts analogue technique substantially.Along with the development of informationization technology, the digitizing gradually of embedded handheld audio frequency apparatus, integrated, cost is more and more lower, volume is more and more less, and on the basis that audio frequency is play also other function integrated, as FM radio reception broadcast, Entertainment etc.

Digital audio-frequency player is as wherein a kind of embedded product, and file layout has that data compression ratio is large, data volume is little, quality high, can bring good result of broadcast to people.Research and develop a powerful, friendly interface, digital audio-frequency player simple to operate, domestic consumer can be enjoyed a trip in the colourful multimedia world by it, meet the requirement of oneself seeing and hearing enjoyment, these make embedded digital audio player become a new study hotspot.Portable digital audio-frequency player of the present invention, has that cost is low, performance good, advantage simple to operate, has certain market popularization value.

Summary of the invention

Technical matters to be solved by this invention is, provide a kind of with low cost, structure simple, be easy to the portable digital audio-frequency player promoted.

The technical solution adopted in the present invention is: a kind of portable digital audio-frequency player, has main control module (1), also comprises the digital audio decoding module (2) be connected with main control module (1); The audio power amplification module (3) be connected with main control module (1); The LCD display module (4) be connected with main control module (1); The data memory module (5) be connected with main control module (1); The power module (6) be connected with main control module (1).

Described main control module (1) adopts flush bonding processor STM32F103VE chip of new generation, is the control core of whole portable digital audio-frequency player, is responsible for the decoding of audio file, broadcasting and display.

Described digital audio decoding module (2) adopts digital audio decoding chip VS1003, realizes the decoding to audio file.

Described audio power amplification module (3) adopts DAB earphone special power amplifier chips TDA1308, sound signal for digital audio decoding module (2) being exported carries out amplification process, the sound signal of amplification is outputted to earphone socket, listens to for user.

Described LCD display module (4) adopts 4.3 cun of liquid crystal touch screens, for realize controlling the function of portable digital audio-frequency player and audio file title of the song, lyrics information display.

Described data memory module (5) adopt SD card as storage medium, for storing audio files, picture and lyrics information.

Described power module (6) for providing system power supply, to make system worked well.

Accompanying drawing explanation

Fig. 1 is the entire block diagram of this portable digital audio-frequency player;

Fig. 2 is the digital audio decoding modular circuit schematic diagram of this portable digital audio-frequency player;

Fig. 3 is the audio power amplification module circuit theory diagrams of this portable digital audio-frequency player;

Fig. 4 is the data memory module circuit theory diagrams of this portable digital audio-frequency player.

Embodiment

Below in conjunction with accompanying drawing and example, the invention will be further described.

Portable digital audio-frequency player of the present invention, flush bonding processor STM32F1203VE of new generation is adopted to be control core, peripheral collocation corresponding digital audio decoding module, audio power amplification module, LCD display module, data memory module and power module, complete decoding and the broadcasting of audio file jointly.

As shown in Figure 1, portable digital audio-frequency player of the present invention, has main control module (1), also comprises the digital audio decoding module (2) be connected with main control module (1); The audio power amplification module (3) be connected with main control module (1); The LCD display module (4) be connected with main control module (1); The data memory module (5) be connected with main control module (1); The power module (6) be connected with main control module (1).

As shown in Figure 2, digital audio decoding module (2) of the present invention adopts digital audio decoding chip VS1003, carries out data transmission, complete the decoding of audio file by SPI communication mode and main control module (1).

As shown in Figure 3, audio power amplification module of the present invention (3) adopts DAB earphone special power amplifier chips TDA1308, VS_Lout and VS_Rout receives the sound signal of digital audio decoding module (2), TDA1308 outputs to earphone socket after sound signal is amplified process, listens to for user.

As shown in Figure 4, data memory module of the present invention (5) adopts SD card as storage medium, is connected, for storing audio files, picture and lyrics information by SDIO interface with main control module (1).

Claims

1. a portable digital audio-frequency player, has main control module (1), it is characterized in that, also comprises the digital audio decoding module (2) be connected with main control module (1); The audio power amplification module (3) be connected with main control module (1); The LCD display module (4) be connected with main control module (1); The data memory module (5) be connected with main control module (1); The power module (6) be connected with main control module (1).

2. portable digital audio-frequency player according to claim 1, is characterized in that: described digital audio decoding module (2) adopts digital audio decoding chip VS1003, realizes the decoding to audio file.

3. portable digital audio-frequency player according to claim 1, it is characterized in that: described audio power amplification module (3) adopts DAB earphone special power amplifier chips TDA1308, sound signal for digital audio decoding module (2) being exported carries out amplification process, the sound signal of amplification is outputted to earphone socket, listens to for user.

4. portable digital audio-frequency player according to claim 1, is characterized in that: described data memory module (5) adopts SD card as storage medium, for storing audio files, picture and lyrics information.