CN203616996U

CN203616996U - Portable digital audio player

Info

Publication number: CN203616996U
Application number: CN201320759834.1U
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: 2014-05-28
Anticipated expiration: 2023-11-22

Abstract

The utility model discloses a portable digital audio player. The digital audio player adopts a digital audio decoding chip to decode an MP3 file, a WMA file and a WAV file and play the files, and comprises a main-control module (1), a digital audio decoding module (2), an audio power amplifying module (3), an LCD display module (4), a data storage module (5), and a power supply module (6). The digital audio player adopts a new generation embedded processor STM32F103VE as the main control chip, combines a digital audio decoding chip to fulfill the function of decoding and playing an audio file, has the characteristics of good tone quality effect, friendly interface and low price, and has a certain application and popularization value.

Description

Portable digital audio-frequency player

Technical field

The utility model relates to a kind of portable digital audio-frequency player, adopt specifically flush bonding processor STM32F103VE of new generation as control core, in conjunction with digital audio decoding chip VS1003, by the design of soft and hardware, the decoding that jointly completes 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 integrated other function also on the basis of playing at audio frequency, as FM radio reception broadcast, Entertainment etc.

Digital audio-frequency player is as a kind of embedded product wherein, 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 enjoy a trip to by it in the colourful multimedia world, meet the requirement of own seeing and hearing enjoyment, these make embedded digital audio player become a new study hotspot.Portable digital audio-frequency player of the present utility model, has that cost is low, performance good, an advantage simple to operate, has certain market popularization value.

Utility model content

Technical problem to be solved in the utility model is, provide a kind of with low cost, simple in structure, be easy to the portable digital audio-frequency player promoted.

The technical scheme that the utility model adopts is: a kind of portable digital audio-frequency player, there is main control module (1), and also comprise the digital audio decoding module (2) being connected with main control module (1); The audio power amplification module (3) being connected with main control module (1); The LCD display module (4) being connected with main control module (1); The data memory module (5) being connected with main control module (1); The power module (6) being 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 decoding, broadcasting and the demonstration of audio file.

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, for the sound signal of digital audio decoding module (2) output is amplified to processing, the sound signal of amplification is outputed to earphone socket, listen to for user.

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

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

Described power module (6) is for providing system power supply, so that system is normally worked.

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 utility model is described in further detail.

Portable digital audio-frequency player of the present utility model, adopting flush bonding processor STM32F1203VE of new generation is control core, the corresponding digital audio decoding module of peripheral collocation, 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 utility model, has main control module (1), also comprises the digital audio decoding module (2) being connected with main control module (1); The audio power amplification module (3) being connected with main control module (1); The LCD display module (4) being connected with main control module (1); The data memory module (5) being connected with main control module (1); The power module (6) being connected with main control module (1).

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

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

As shown in Figure 4, data memory module of the present utility model (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) being connected with main control module (1); The audio power amplification module (3) being connected with main control module (1); The LCD display module (4) being connected with main control module (1); The data memory module (5) being connected with main control module (1); The power module (6) being 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, for the sound signal of digital audio decoding module (2) output is amplified to processing, the sound signal of amplification is outputed to earphone socket, listen 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.