Design And Implementation Of Advanced Audio Play System On MTK Platform

The design and implementation of advanced audio play system focus on how to integrate the Bluetooth core software to MTK mobile phone platform efficiently and to develop the Bluetooth technology-based advanced audio play function on MTK platform.The mobile communication industy developes rapidly in recent ten years, Mobile phone industry attracts more and more companies in the loop for its expansive market prospect and profit potential. Therefore the competition of the industry is extremely intense. To boost production competitiveness, besides basic functions, graceful industrial design and reliable structure design, it's also important to develop utilized and unique fuctions with good man-machine interaction for the mobile phone.With the speedy development of mobile communication and semi-conductor technology, mobile phone has evolved from simple functional communication device to multi-functional consuming electrical product. As a popular function among consumers, music play can only be implemented on specific music players before, such as CD and MP3 players, etc. Parts of the early mobile phones also have music play function. But confined to the cost of codec decode technology and memory capacity, these phones can only support a few audio formats. Furthermore, due to their limited memory capacity, they can only store few songs. So it is very hard to use them. With the development in multimedia codec technology and IC technology in recent years, built-in DSP in mobile phone has more and more powerful multimedia data process capability and can support more audio data formats. Furthermore, with the decreased cost of storage device, mobile phone can be equipped with a storage device of big capacity at a lower cost, such as Nand Flash. As a result, music play function in mobile phones becomes more and more powerful. Instead of the traditional music player, mobile phone has gradually become the consumers' preferred way to enjoy music. Due to length limit and different interface standards of cable earphone, users cannot change earphones at their own wills, which affect their feelings of enjoying music,Bluetooth is an open technology standard of short-range wireless communication. Working in the 2.4G frequency band, it is used to replace the current short-range multi-cords connection solutions. It can go through barriers like wall. Through universal short-range wireless connections, it enables voice and data transmissions among various digital devices in a flexible, safe, low-cost and low-consumption way. It can transmit both voice and data. Utilizing circuit and packet switch technology, it supports Asynchronous data channel, three-way speech channel and asynchronous simultaneous transportation channel of data and speech.As for the above problems, this thesis focuses on developing a bluetooth-based audio play system on MTK platform to implement the managing functions of Bluetooth device and advanced audio play function. The wireless link of Bluetooth transmits the music on mobile phone to the Bluetooth earphone, which helps users to get away from the cables. The system mainly includes basic Bluetooth management module, A2DP module and music player module.The system is designed and implemented based on software engineering idea. It contains requirement analysis, and describes the detailed implementation process of the above-mentioned subsystems, such as framework design, develop environment configuration, detailed module design and integrated testing. It finally points out a design solution of advanced audio play system based on MTK platform.