tailieunhanh - Audio data acquisition system design based on ARM and DSP

This paper introduces the communication interface design with respect to the HPl interface between ARM and DSP, and A/D, D/A converter design, and describes the operating principle of interfaces and relevant configuration. | Send Orders for Reprints to reprints@ The Open Electrical Electronic Engineering Journal 2015 9 285-290 285 Open Access Audio Data Acquisition System Design Based on ARM and DSP Yongxin Wang Chongqing College of Electronic Engineering Chongqing China Abstract With the rapid development in embedded technology and multimedia technology digital audio technology has been widely applied. Based on an audio data acquisition system this paper introduces the communication interface design with respect to the HPl interface between ARM and DSP and A D D A converter design and describes the operating principle of interfaces and relevant configuration. A method of audio data acquisition is presented controlled by ARM with signal processing done by DSP. It provides the system chart of data acquisition and software flow chart. This design scheme can take full advantage of McASP interface to achieve high precision AD DA converter and HPl interface has been used to realize high speed data transfer between ARM and DSP thereby achieving efficient and real-time transmission of huge amount of audio data stream. Keywords ARM Data acquisition DSP HPl host port interface . 1. INTRODUCTION In the field of audio applications a large number of operations often require audio data such as acquisition processing transmission storage and other operations at the same time. Only adopting DSP and ARM processor cannot meet the system requirements of real-time and high efficiency therefore the combination of ARMS and DSP are used by more embedded real-time application systems to achieve higher performance. Among them the ARM is the main processor which is responsible for task management interface control and human-computer interaction whereas the dependent processor DSP is responsible for data processing 1 . The high speed data acquisition system consists of ARMS DSP. The rate of data transmission between ARM and DSP determines the whole performance of the embedded system. Based on .

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