I have an audio recording that was recorded through a telephone channel, the beginning and end of which contain an audio tag. I have a "clean" version of this audio signal, its spectrogram looks like this:
The spectrogram of the sound recording looks like this:
Note: the length of this audio tag is exactly 1 second
How can I find all occurrences of this tag in the audio file? There can be 30-50 such audio tags in this audio file. The mask search will not work, since it is obvious that the sound that passed through the telephone channel has some distortion. In theory, I would like to get all the sample indexes that this audio tag starts with, then I would be able to trim them knowing the length of the audio tag and the samplerate of the audio file (samplerate may vary)