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doc/filters: specify more axcorrelate design 

The typical 1D normalized cross-correlation is not same as
1D windowed normalized cross-correlation.
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Paul B Mahol 2021-10-09 01:50:04 +02:00
parent 9b17273c77
commit 95cae4922d
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doc/filters.texi
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@ -3154,7 +3154,7 @@ ffmpeg -i INPUT -af atrim=end_sample=1000
@end itemize
@section axcorrelate
Calculate normalized cross-correlation between two input audio streams.
Calculate normalized windowed cross-correlation between two input audio streams.
Resulted samples are always between -1 and 1 inclusive.
If result is 1 it means two input samples are highly correlated in that selected segment.