transpose metallic noise

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Logado
Posts: 62
Joined: Tue Jan 06, 2015 5:42 pm

transpose metallic noise

Post by Logado »

Hi. this schematic load file and transposes via MIDI messages. Work fine but, 60 (base) sound clear 62,64,65 etc. I hear the metallic noise.
What did I do wrong?
How i can fix this?
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example.fsm
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KG_is_back
Posts: 1196
Joined: Tue Oct 22, 2013 5:43 pm
Location: Slovakia

Re: transpose metallic noise

Post by KG_is_back »

The problem is interpolation. Your schematic uses linear interpolation, which produces quite a lot of aliasing when sample is transposed. Search for better interpolation methods - there are plenty examples...
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