Freeverb with low input levels ==> noise and wierd oscillating "tone" ?

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Are you still hearing the "freeverb buzzing and crackling noises" you mentioned in post #21? Did you ever try the floating point version post #16?
 
I had the same problem, and when I found this thread I spent some time trying to make sense of the proposed solutions. However, the problem has been solved in recent updates, as far as I can tell, with some changes to the "effect_freeverb.cpp" file specifically. So if anyone is still banging their head against this, you just need to update your software. I just swapped out the one file, and now freeverb works great in my project.

Details: Matt Venn committed a fix for it in july 2020, and it was merged into the main master by Paul Stoffregen in february 2021 : https://github.com/PaulStoffregen/Audio/pull/357
 
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