[PD] Sampler loop strategies

Dafydd Hughes dafydd61 at gmail.com
Wed Feb 14 19:13:22 CET 2007


Hi Frank

The problem with the phasor~ is that I can't get a crossfade over the
loop end (unless there's something I'm missing).  Bummer - my loops
aren't that clean.

I will look at RTC-lib.  Thanks for the tip.

cheers
dafydd

On 2/14/07, Frank Barknecht <fbar at footils.org> wrote:
> Hallo,
> Dafydd Hughes hat gesagt: // Dafydd Hughes wrote:
>
> > The best solution I can think of is to use 2 tabread4~'s, crossfading
> > for every pass of the loop.  Anybody have a better idea?
>
> I'd do the looping a bit differently: Standard would be to use a
> [phasor~] scaled so that it plays a certain section of the sample with
> [tabread4~].
>
> Example: Assuming you want to loopplay samples 1000 to 1050 at a
> loop-frequency of 100:
>
>  [phasor~ 100]
>  |
>  [*~ 50] because: 50 = sample_end - sample_start
>  |
>  [+~ 1000] because: 1000 = sample_start
>  |
>  [tabread4~ yoursample]
>
> Playing the sample in full could be done with [vline~] as in one of
> the example patches in the docs (or use [play-samp~] from RTC-lib].
>
> Now the tricky part is how to switch from the normal play to the
> looping phase without clicks. Maybe this can be realized most easily
> by just crossfading from the [vline~] player to the [phasor~] loop.
> Again RTC-lib might be useful: It has a little [crossfade~]
> abstraction that does constant-power crossfades.
>
> Ciao
> --
>  Frank Barknecht                 _ ______footils.org_ __goto10.org__
>
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