I figured out how to control frequency and resonance for two pole filters using MULX with a POT input, but these filters do not use RDFX or WRHX/WHLX.
Before I spend the rest of the day slamming my head into the wall I'm wondering if it's even possible to pot control freq and shelf with the RDFX/WR?X combination. If so, a hint would be vastly appreciated!
Update: nice section on this in the Knowledge base. Quick answer = it's a little more complicated.
http://www.spinsemi.com/knowledge_base/ ... ng_filters
This example covers adjusting the shelf depth via control. How about the frequency?
Thx,
DL
Possible to control freq via pot for RDFX/WRHX?
Moderator: frank
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Those instructions all require that the coefficient be part of the instruction so you can't use a register for it. If you want an adjustable filter you can't use these instructions and will need to use MULX.
Frank Thomson
Experimental Noize
Experimental Noize
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