Hallo Frank, Hi pd-list, hhhmmm...sorry I guess my explanation was not very precise. I studied the pd-example-patches Frank mentioned but [samphold~] has a big disadvantage: if we change a start or stop point of a loop-playback, then this change will be executed only after each cycle of the [phasor~](thus when it jumps from 1 to again). But if we work with long soundfiles and want to change their length "on the fly"- from long loop length to short loop length for instance - then [samphold~] can*t do what we want. So my question is: How is it possible to change in real-time the start and stop position of a soundfile in loop mode without getting audible audio clicks. Any other ideas, suggestions???
MArko
Hallo, Marko Timlin hat gesagt: // Marko Timlin wrote:
Hi Ben, hi pd-list I just studied Ben's [susloop~] object and I have one questions. How is it possible to change the start and stop position of a soundfile in
loop mode without getting audible audio clicks. How can you do that?
I'm just developing my own soundfile-player and I have the problem that
whenever I change the start and/or stop position in real-time I get a short audible audio click whenever [tabread4~] "jumps" to the new position.
In my patch [phasor~] is multiplied with the amount of samples the soundfile
has and reads like that through the soundfile using [tabread4~].
One popular approach is to use [samphold~] to only set the new limits whenever the phasor~ jumps anyway. The samplers in 3.audio.examples and Miller's book contain lots of examples of this approach.
Ciao
Frank
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How is it possible to change in real-time the start and stop position of a soundfile in loop mode without getting audible audio clicks.
other options are:
(1) use 2 loop players and crossfade between then every time you change the position. (you can put each player in a separate subpatch and use [switch~] to turn it off after the crossfade is finished, to save on processing power)
or (2) use [vline~] to fade your audio out before the position change, and back in after it. so, something like:
[r newposition] | [pipe 5] | [looperplayerthingy~] | | [r newposition] | | | [t b] | | | [0 5, 1 5 7] | | | [vline~] | | [*~ ]
(3) you could also use a voltage controlled Lowpass filter instead of the simple volume fade to do a similar thing to (2), but better. this would either require an external, or making a filter yourself using [czero~] and [cpole~] or whatever.
-
hard off -
Marko Timlin