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已关闭8年。
嗨，您已经在python中取得了一个从音频文件获取基本频率的来源，我想将其用于从DTMF音频获取音调!
但是如何从音频中获得低音呢？
ks!
确切地说，我应用了FFT，但其返回始终是高频。
频率表在这里
http://www.mediacollege.com/audio/tone/dtmf.html例如，当我得到一个键为“1”的.wav音频文件时，我只有要求1209
在这种情况下，如何获得键“1”的低频为697，FFT不要给我这个信息:-(