Remove audio artifacts when automating the Equalizer parameters. #4260
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The Equliser pluging uses biquad filters, These do not like having there parameters updating during processing, and are know to produce clicks and DC biasing. A twin filter system has been employed with a cross fade, to interpolate between parameters. This has removed for the use of sample exactness, as the filter is only updated once per frame, with interpolation provided by the crossfade. The same filters are used as pervious, ensuring unautomated filtering remains unchanged.
curlymorphic
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Jun 28, 2022
Remove audio artifacts when automating the Equalizer parameters.
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The Equalizer plugin uses biquad filters, These do not like having
there parameters updating during processing, and are know to produce
clicks and DC biasing. A twin filter system has been employed with a
cross fade, to interpolate between parameters.
This has removed for the use of sample exactness, as the filter is only
updated once per frame, with interpolation provided by the cross fade.
The same filters are used as previous, ensuring un automated filtering
remains unchanged.
fixes #4127