Pitch up in Grain Cloud is silent

Pitch up in Grain Cloud Delay is silent

I'm hoping that this corrected post maybe get a few more responses!
edit---
This doesn't seem right.. and I tested with the normal Grain Delay and the pitch up is fine, but the Grain Cloud Dleay, with an audio in, and a pitch control, push the pitch above 0 and it goes silent?!

Please confirm.. cheers

 

Re: Pitch up in Grain Cloud Delay is silent

have you got anything connected to the Dly input?

i have a Delay control, Grain length control and pitch up/down +24 -> -24 (Stepsize 1) and it is working fine.

sowari

 

Hi Sowari,

yeah, i found the problem - pitch up doesn't work when the delay is set to zero - pitch down's fine though.. which makes sense, since one can slow down time which has passed, but no matter how hard we try, we'll never be able to pitch up to the future.. if you see what i mean

cheers

 

That is correct. Note that they could have made it such that there was an "implied delay" for pitching up - which is to say that the delay would be computed when pitching up based on such things as the grain size and the pitch amount. This is something I did in the "unreleased" revision to my GrainMath structure for beatlookup. For example, if you have a grainsize of 50ms, and you are pitching up by one whole octave (i.e. it's playing at double speed), then you *must* have a delay of 50ms because when than when that 50ms grain starts, and plays through at double speed, it will "catch up" to the current write position at the same time that it ends.

...errr, or something like that! I can't get my head around it right now in the abstract, but I worked it out on paper, and the new structure I made works nicely for "as close to no delay as possible" pitching-up, depending on the specified grain-size.

- CList