Audio Data Acquisition System Design Based on ARM and DSP

With the rapid development of embedded technology and multimedia technology, the digital audio technology has been widely applied. According to an audio data acquisition system, this paper introduces the communication interface design on the basis of HPl between ARM and DSP, and A/D,D/A converter design, describes the operating principle of interfaces and relevant configuration. A method of audio data acquisition is presented, control is based on ARM, DSP takes charge of signal processing, it provides the system chart of data acquisition and software flow chart. This design scheme can take full advantage of McASP interface to achieve higlrprecision AD & DA converter, and HPl interface is used to realize high speed data transfer between ARM and DSP, thereby achieving efficient and real-time transmission of huge amounts of audio data stream.