I've just finished an experiment of using two Frequency Shifters to turn a
Fixed Filter Bank
into something animated, modulated.
A drone sound from the OB-8 is sent to a first Frequency Shifter, which
shifts the audio signal up by a variable amount of Hz.
This upshifted signal is sent thru a filter bank (MAM vocoder, with a rather
thin-sounding setting with all even channels up and all odd channels down.
This filtered signal is shifted back down with a second Frequency Shifter,
by the same amount of Hz that the original signal was shifted up.
First you hear the very thin sounding unshifted signal - just the OB-8 drone
processd by the vocoder filter bank.
Then we start to modulate the Frequency Shifter with the Joystick.
http://jhaible.heim.at/matrix_fx/jh_fs_updown_demo.wav ( 7 MByte - I tried
mp3, but it was no good)
Please note that there is no filter modulation! The filter is fixed all the
time (static formant filter) - it's the signal that is modulated!
Sorry for the rather low quality of the unmodulated sound - I just made this
experiment at 1 am after
finishing the hardware. :)
Background about this project:
http://jhaible.heim.at/matrix_fx/jh_matrix_fx.htmlLet me know if you have ideas what else could be processed with this. I'll
certainly try reverb, and all
kinds of fixed filters.
JH.