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Fix waveshaping in DynamicsProcessor #7013

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szeli1
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@szeli1 szeli1 commented Dec 3, 2023

closes #1581

With this change the DynamicsProcessor plugin/effect will cause much less waveshaping.

lmms_dynamics_test

This picture shows the difference in the output volume and the fft between the original (version 1.2.2) and the changed version.
(keep in mind that the noise shown in the new version is because of clamping(?))

@szeli1 szeli1 changed the title DynamicsProcessor_waveshaping_fixed DynamicsProcessor waveshaping fixed Dec 3, 2023
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szeli1 commented Dec 3, 2023

test file:
lmms_dynamics_processor_test.mmpz.txt

szeli1 and others added 5 commits March 23, 2024 09:26
Co-authored-by: saker <sakertooth@gmail.com>
Co-authored-by: saker <sakertooth@gmail.com>
Co-authored-by: saker <sakertooth@gmail.com>
Co-authored-by: saker <sakertooth@gmail.com>
Co-authored-by: saker <sakertooth@gmail.com>
sakertooth
sakertooth previously approved these changes Mar 26, 2024
@sakertooth sakertooth changed the title DynamicsProcessor waveshaping fixed Fix waveshaping in DynamicsProcessor Mar 26, 2024
@sakertooth sakertooth dismissed their stale review March 26, 2024 15:32

Improper fix, DynamicsProcessor and its calculations needs to be fundamentally fixed to resolve this issue properly.

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Closing in favor of #7168 (apologies for having you go through all of that, but a more proper solution seems to have been found).

@sakertooth sakertooth closed this Mar 26, 2024
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Dynamics processor causes waveshaping, even with the highest possible attack and decay values
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