如何在NXP的M3 DSP库中使用FFT函数解码DTMF音调 AN10943
Decoding DTMF tones using M3 DSP library FFT function
Rev. 1 ― 17 June 2010 Application note
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Keywords M3, LPC1300, LPC1700, DSP, DFT, FFT, DTMF
Abstract This application note and associated source code example demonstrates
how to use the FFT function contained within NXP’s M3 DSP library to
decode DTMF tones.
NXP Semiconductors AN10943
Decoding DTMF tones using M3 DSP library FFT function
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