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Design of Speech Signal Acquisition System Based on DSP

Linsheng Li

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Abstract

A speech signal acquisition system based on the 16-bit, fixed-point, digital signal processor (DSP) TMS320VC5410 is designed. The system adopts single high-resolution analog interface chip TLC320AD50C that integrates sigma-delta digital-to-analog converter with analog-to-digital converter. Buffer and control logic are realized by first-input-first-output (FIFO) memory and complex programming logic device (CPLD) separately. A highly integrated universal serial bus (USB) peripheral interface device EZ-USB is used in serial communication. The basic design principles for hardware and the program frame and realization methods for software are analyzed. The result of test shows distortion almost cannot be sensed when utilizing the system to speech signal playing back.

About this research paper

What this paper is about

A speech signal acquisition system based on the 16-bit, fixed-point, digital signal processor (DSP) TMS320VC5410 is designed. The system adopts single high-resolution analog interface chip TLC320AD50C that integrates sigma-delta digital-to-analog converter with analog-to-digital converter. Buffer and control logic are realized by first-input-first-output (FIFO) memory and complex programming logic device (CPLD) separately. A highly integrated universal serial bus (USB) peripheral interface device EZ-USB is used in serial communication. The basic design principles for hardware and the program frame and realization methods for software are analyzed. The result of test shows distortion almost cannot be sensed when utilizing the system to speech signal playing back.

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Available abstract

A speech signal acquisition system based on the 16-bit, fixed-point, digital signal processor (DSP) TMS320VC5410 is designed. The system adopts single high-resolution analog interface chip TLC320AD50C that integrates sigma-delta digital-to-analog converter with analog-to-digital converter. Buffer and control logic are realized by first-input-first-output (FIFO) memory and complex programming logic device (CPLD) separately. A highly integrated universal serial bus (USB) peripheral interface device EZ-USB is used in serial communication. The basic design principles for hardware and the program frame and realization methods for software are analyzed. The result of test shows distortion almost cannot be sensed when utilizing the system to speech signal playing back.

Key concepts: USB, Complex programmable logic device, Computer hardware, FIFO (computing and electronics), Computer science, Digital signal processing, Interface (matter), Serial communication

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