
to perform a pitch analysis based on a crosscorrelation method.
Raw crosscorrelation is the pitch analysis method of choice if you want to do voice analysis (e.g. jitter, shimmer).
Note that the preferred method for speech (intonation, vocal fold vibration) is pitch analysis by filtered autocorrelation. Raw crosscorrelation is mainly for experimenting, or for applications where you need short time windows; for this latter reason, it is also the standard method for voice analysis.
See how to choose a pitch analysis method for details.
The algorithm performs an acoustic periodicity detection on the basis of a forward crosscorrelation analysis.
Several settings are already described in Intro 4.2. Configuring the pitch contour. The explanations below assume that you have gone through that part of the Intro.
Note that if you set the time step to zero, the analysis windows for consecutive measurements will overlap appreciably: Praat will always compute 4 pitch values within one window length, i.e., the degree of oversampling is 4.
The other settings are the same as for pitch analysis by raw autocorrelation.
Pitch analysis by raw crosscorrelation is available in two ways in Praat:
© Paul Boersma 1996,2003,2023,2024