Re: What will become of the Repeater pitch stretching techology,I wonder

[andy butler <akbutler@tiscali.co.uk>]

Surely with the Repeater if the pitch shift is done "tape style" the 
overdubbed audio won't be corrupted.
(just asking).

By "tape style" I mean that the pitch increases as the loop length 
decreases,
like on the EH devices, I understand that the Repeater can do this, but 
that it's default is to time stretch.

When the loop is time stretched it's very difficult (impossible?) to 
overdub without artefacts, because the sound that you are writing to the 
loop has to go through an inverse time stretch to be written, and then is 
time stretched again on playback. So you get double the artefacts, and 
even when you return to normal playback the overdub is still fried. 

Personally I wasn't impressed by the time stretching on the Repeater, but 
there's no doubt that a lot of people liked the interesting sound. I 
wasn't able to sus out how it worked with just the small amount of time 
I've had to play with a repeater.


As to Per's comments about the best pitch shifters being non-realtime, 
hopefully it will be possible eventually to use those algorithms on a loop 
so that it plays back at the right time using a compensation for the time 
taken by the algorithm. 


andy butler  
 

Charles Zwicky wrote:
>> What exactly is the point of UNCORRUPTED pitch shifting?? Play a 
>> different note I say... I absolutely LOVE the sound of the repeaters 
>> time stretching, and PURPOSELY load up empty patches from CFC so that 
>> It pitches my shit a bit wrong...
> 
> 
> I hear you,  the artifacts are cool and can be a lot of fun - HOWEVER -  
> these artifacts should be a function of the playback process.  In the 
> Repeater,  newly recorded audio is inextricably corrupted when employing 
> the time stretch function. It's a halfassed  implementation.
> 
> 
>