With an audio-rate saw-wave both did ok, despite some distortion issues and the levels being severely lower (the output is not as hot as the input).
With LFO-rate AC signals, the DD-7 performed similar to how it did for audio-rates, but the levels were even lower. The E2 didn't even pass the signal through, let alone loop it.
With a DC envelope, The DD-7 still looped it, but the levels were even lower still (I could barely detect it). Nada with the E2.
Perhaps an attenuator and a pre-amp before & after the DD-7 would help, but I am sure it would still not be very close to what was originally intended. It seems that the slow frequencies is as much of an issue as DC.
BTW, was just using a simple patch of osc -> VCA, and controlling the VCA with the looper's output.
Yeah, this is similar to Subotnick's approach mentioned in an article linked to above.7thDanSound wrote:Yes, that's exactly how I imagined ittheantiroman wrote:@ 7th Dan Sound:
So is that :
audio into VCA with the VCA being opened and closed rapidly in some manner. then VCA to recording device.
playback (CV retrieval): recorded CV to envelope follower then enve. follower output to whatever you want to follow CV?
I don't have an envelope follower or preamp, but I tried this with the DD-7 (just dumping the output into the VCA's CV in) and got promising results.