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DSP technology for a hands-free cellular phone in a car

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1 Author(s)
Oh, S. ; Texas Instrum. Inc., Dallas, TX, USA

We present the development results of an acoustic echo canceller (AEC) and adaptive noise suppresser used for hands-free car phones using the Texas Instruments' TMS320C5x fixed point DSP processor. A hands-free cellular phone using DSP technology provides full-duplex communication with speech enhancement in a noisy car environment. Thus, our AEC system was designed for an adverse car environment. The implementation and design trade-off of an acoustic echo canceller on a 16-bit fixed point DSP microprocessor caused by the automotive environment, are discussed

Published in:

Southcon/96. Conference Record

Date of Conference:

25-27 Jun 1996