#1117 [tabread4~]

v0.43
pending-works-for-me
None
5
2013-10-07
2013-10-07
No

Pd version: Pd version 0.43.4-extended
OS: Mac 10.6.8
built-in sound

The sound become distorted during the reading process.

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Discussion

  • IOhannes m zmölnig

    • status: open --> pending-works-for-me
     
  • IOhannes m zmölnig

    0) cannot reproduce

    1) [tabread4~] has a slight distortion by definition, as it interpolates data between samples (using a 4-point interpolation, which is not a perfect reconstruction of the soundform)

    2) your test-patch is incomplete, as it lacks a sound-file that exposes the problem; most likely any problem with distortion will only happen with longish soundfiles (where the slope of the phasor~ramp is very flat). please provide a test-sound, ideally without having to download hundreds of MBytes (e.g. use Pd to generate a sound that exposes the problem)

    3) if you are using large soundfiles (>1e8 samples) the control signal the sample-values (which are stored as single-precision floating-point values) will become inaccurate. this is a known issue, and there are two solutions for it: either use a "double precision build" of Pd (no stable release yet) or use the 'onset' feature of [tabread4~] (available since Pd-0.42.0 iirc);

     
    Last edit: IOhannes m zmölnig 2013-10-07
  • IOhannes m zmölnig

    • summary: tabread4 --> [tabread4~]
     


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