Hi I’m trying to come up with a formant filter design, here’s what I’ve got:
Two bandpass filters sitting on the two formant frequencies for a vowel (as found on wikipedia), but two vowels can be interpolated (creating an “AAUUAAAUAUUAAUAAUU” sound for example).
Now this approach works in general, but the result sounds very thin, like coming from an old radio (which isn’t really surprising given the bandpass implementation)
I tried some things like making the lower filter a resonant LP and the higher a HP, but things didn’t work out.
Do you have any ideas or resources for “strong” formant filters?
Thanks in advance!