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Digital Audio Acquisition System Design and Realization Based on Nios II

Xinxing Jing

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Abstract

With FPGA chips EP2C70F896C6N target board for the system platform,using SOPC technology and constructing SOPC hardware,I2C bus,AUDIO,SDRAM are controled by NIOS Ⅱ of ALTERA.System writes digital audio application program and function expansion application program,to realize A/D,D/A digital audio conversion,storing of audio signal,LCD displaying,etc.Meanwhile,the system combines with Matlab2010 software to simulate collected digital audio.Practice has proved,the characteristics of system are integrated with high stability and precision,good scalability,good real-time.

About this research paper

What this paper is about

With FPGA chips EP2C70F896C6N target board for the system platform,using SOPC technology and constructing SOPC hardware,I2C bus,AUDIO,SDRAM are controled by NIOS Ⅱ of ALTERA.System writes digital audio application program and function expansion application program,to realize A/D,D/A digital audio conversion,storing of audio signal,LCD displaying,etc.Meanwhile,the system combines with Matlab2010 software to simulate collected digital audio.Practice has proved,the characteristics of system are integrated with high stability and precision,good scalability,good real-time.

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Available abstract

With FPGA chips EP2C70F896C6N target board for the system platform,using SOPC technology and constructing SOPC hardware,I2C bus,AUDIO,SDRAM are controled by NIOS Ⅱ of ALTERA.System writes digital audio application program and function expansion application program,to realize A/D,D/A digital audio conversion,storing of audio signal,LCD displaying,etc.Meanwhile,the system combines with Matlab2010 software to simulate collected digital audio.Practice has proved,the characteristics of system are integrated with high stability and precision,good scalability,good real-time.

Key concepts: Digital audio, Nios II, Field-programmable gate array, Scalability, Realization (probability), Computer hardware, Audio signal, Embedded system

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