I am trying to extract the residual (noise) from a sound wave.
I read up that if you remove ceratin modes (peaks) from the soundwave witch can be detected from the frequency domain.
Though sometimes the soundwave wont have any obvious peaks or i have got the theory wrong?

Has anyone manage to do this or knows how to perform the extraction?

I want to use the residue to be either be replaced by a sinusoid or mix the residue with sinusoids.


How would one go about to combine a group of different sinusoids together to form an overall output waveform?

Would one require to use the additive synthesis method to do so or use convolution?


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