The TW9910 is a multi-standard video decoder and encoder chip that is designed for
multimedia applications. It uses the mixed-signal 1.8V CMOS technology to provide a low-
power integrated solution.
·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
