如何从 python 中的 WAV 文件中提取不同的频率？

Question

I'm trying to play different frequencies at equal time intervals from one computer and analyze them with another.
So far I have managed to play frequencies, record them from the other computer and save them in a WAV file using Python.
My problem starts when I'm trying to analyze the file. I had tried a lot of methods I found online, but none of them have worked.
Can someone please recommend a library or an algorithm that fits this description? :)

This is what I've got:

 def getFreq(start): end = start + 10 sr, data = wavfile.read("somefile.wav") sp = int(sr * start / 1000) ep = int(sr * end / 1000) l = 10 / 1000 c = 0 for i in range(sp, ep): if data[i] < 0 and data[i + 1] > 0: c += 1 return int(c / l)

Answer 1

Look for implementations of STFTs (short term Fourier transform) or spectrogram visualizers.