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Cross-Synthesis Procedure

Cross-synthesis may be summarized as consisting of the following steps:

  1. Perform a Short-Time Fourier Transform (STFT) of both the modulator and carrier signals
  2. Compute the spectral envelope of each time-frame
  3. Divide the spectrum of each carrier frame by its own envelope, thereby flattening it
  4. Multiply the flattened spectral frame by the envelope of the corresponding modulator frame, thereby replacing the carrier's envelope by the modulator's envelope.


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``Cross Synthesis Using Cepstral Smoothing or Linear Prediction for Spectral Envelopes'', by Julius O. Smith III, (From Lecture Overheads, Music 421).
Copyright © 2014-03-24 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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