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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:-(
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