·詳細說明:Goertzel算法是DTMF信號檢測的核心,它利用二極點的IIR濾波器計算離散傅立葉變換值,快速有效的提取輸入信號的頻譜信息。-Goertzel algorithm is the DTMF signal examination core, it uses two extremes the IIR filter computations to be separated Fourier t
·詳細說明:DTMF檢測程序。定點計算,可移植到DSP上。 Usage: dtmf filename -DTMF examination procedure. The fixed point calculation, may transplant to DSP on. Usage: Dtmf filename 文件列表: alaw.cpp alaw.h &nb