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本文主要介绍软件无线电网关中的数字音频板的软件设计,用TI公司DSP芯片TMS320C549实现四路CVSD(Continuously Variable Slope Delta Modulation)编码和解码,以及无线话音检测算法、FIR滤波等功能。
This article mainly introduces the software design of the digital audio board in the software radio gateway, and realizes the encoding and decoding of four CVSD (Continuously Variable Slope Delta Modulation) with TI DSP chip TMS320C549, as well as the wireless voice detection algorithm and FIR filtering.