formant rfm

Dr. Jörg Schmitz JSchmitz at
Mon Nov 22 08:24:09 CET 1999

Hi all,

is there anyone who knows, why the input- and output stage of the
formant resonant filter module is built up with a LF356 and LF357 ?
I tried it, and with the 357 as the summing OP-amp, there is only 
HF-Noise. With a 741, it works pretty well.

So, why a 357 and not a 741 ????

Dr. J. Schmitz

More information about the Synth-diy mailing list