[PD] Interpolation
Josh Steiner
josh at vitriolix.com
Fri Mar 12 22:15:42 CET 2004
Frank Barknecht wrote:
>Hallo,
>Josh Steiner hat gesagt: // Josh Steiner wrote:
>
>
>
>>I have a question about interpolation, as in [tabread4~] vs. [tabread~]
>>... my performance environment often has like 20-40 samplers playing
>>simultaneously and its really beggining to bog down my cpu to the poitn
>>where i'm getting dropouts, so i'm looking for ways of optimizing my
>>patches. i'm using tabread4~'s in it because i though this is more
>>"correct" but i really dont know much about it. how much does it really
>>affect the sound if i am just using it as a simple sampler? how much
>>effeiciency gain can i expect from using non interpolated tabread?
>>
>>
>
>Why not just try it?
>
>
i did and didnt notice any artifacts, but its hard to tell sometimes and
i wouldnt want to rely on non interp. if later on i started to notice
the artifacts :)
actualy... the cpu usage with [tabread~] and [tabread4~] is identical in
my little test here... hrm... i wonder if there are any more effiecient
sample players... anyone have any suggestions? i guess i'll go try out
xsample/xgroove...
>If you don't resample your samples, i.e. play everything at the
>same, natural speed, you won't get any artivacts at all when using
>tabread, as you don't need to interpolate at all.
>
>
>But if you play your samples faster or slower, 4-point interpolation
>has advantages.
>
ok, i do play back at variing speed so looks like i should stick with
the interp. tabread.
>I don't have any reference material at hand ATM, about
>how much the introduced noise will be, but I know, that it's discussed
>in the Dodge/Jerse "Computer Music" book. So if you can find that...
>
>ciao
>
>
i read over MSP's chapter on interp. and all i got was a big wooshing
sound as it shot over my head :)
--
________________________________________________________________
live experimental electronic music -- http://bluevitriol.com
independent u.s. drum'n'bass -- http://vitriolix.com
More information about the Pd-list
mailing list