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Asked: 2026-05-23T11:32:54+00:00

I am trying to implement time-domain overlap-add method in order to stretch data in

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I am trying to implement time-domain overlap-add method in order to stretch data in wav file. But the results I get are little bit disappointing. It seems that there is something I am doing wrong
Here is the process of my TDOLA:

  • At first I take a chunk from input signal
  • Then I multiply the chunk with chosen window (for example, Hann window)
  • Finally I add my chunk to output stream with an overlap

Is there something wrong with this sequence? Maybe some filtering in frequency domain is necessary?

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1 Answer

  1. Editorial Team

    Try using chunks that are at least a small multiple of the pitch period in length. You can either guess the average pitch period for your source sound file, or run a DSP/software pitch estimator algorithm for better results.

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