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(desktop) WaveEdit, GR-16 - and other wavetable synths

paulypauly
in Other

Found this great open source wavetable editor WaveEdit but the wavetables it writes don't seem to be compatible with GR-16. Apparently it's for a couple of Eurorack modules, the E352 and the E370.
I'm not sure exactly what a 'wavetable .wav' file is - and there doesn't seem to be much out there on the spec, barring lots of fairly vague references to Serum format. Can anyone fill me in on what the Serum format actually is, and whether there's any way to produce wavetable files without having to use Serum itself?

Comments

  • rs2000rs2000

    Nice idea, unfortunately WaveEdit creates wavetables wih max. 32k lengh and individual waves only 256 samples long.
    Groove Rider uses "Pro" wavetables that are compatible with Xfer Serum: One wave has 2048 samples and the wavetable can be much larger in size.

    Sorry I can't tell you about a free alternative to Serum, but in the meantime maybe you can find some of the ones you're looking for by searching for "serum wavetables" online.

  • paulypauly

    Thanks. I figured it would be something like that.

    So are wavetable wavs something like BWF wavs, a standard wav file with an extra metadata in the header?

    https://en.m.wikipedia.org/wiki/Broadcast_Wave_Format

  • rs2000rs2000

    @pauly said:
    Thanks. I figured it would be something like that.

    So are wavetable wavs something like BWF wavs, a standard wav file with an extra metadata in the header?

    https://en.m.wikipedia.org/wiki/Broadcast_Wave_Format

    The idea of a wavetable is to append any number of single-cycle waveforms into one file. Each of the single cycles can be looped to make a steady sound at exactly one frequency.
    By appending more wave cycles behind the first one and making the sound change a bit with each cycle, the synth you're going to use it in will re-pitch the wave depending on the notes you play and additionally give you the possibility to tell it which of the single-cycle waves it should play.
    A good WT synth (like in GR16) will allow for free and fine-positioning inside the array of wave cycles, and if it has to play a position in-between, it will crossfade between the two adjacent ones in order to avoid artefacts.

    I've just remembered Audioterm which is certainly better than WaveEdit in that it supports single cycle waves up to 4096 samples.
    Download the Windows software from:
    https://www.dropbox.com/s/czri7yth56lel0r/Audio-Term (1).7z?dl=0

    There's also a facebook page but it's hard to read without a fb accunt:
    https://de-de.facebook.com/Audioterm/

  • paulypauly

    Audioterm looks good (and more importantly, runs under Wine). Weird program. It looks like a DOS app, but doesn't seem to have any keyboard shortcuts.

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