I'm scoring a film and I would like to include this effect in my music:
Basically the violas and the cellos play "random" harmonic glissandos on the open fourth string (C), while the basses play a tremolo sul ponticello.
I'm looking for a way to recreate this effect with my sample libraries. I tried using EQs and filters to isolate certain frequencies of a regular note, but it doesn't sound like harmonics at all. I can't find any libraries or synths that inculde this effect or something similar either.
Any suggestions? :)