Audio Data Acquisition System Design Based on ARM and DSP

摘要

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