OctaCycle v0.1 - Single-cycle waveform tool

spnw · 2023-09-06T00:25:01.255Z

As someone who likes to do synthesis on the Octatrack, I sometimes get frustrated by the two-octave limit when working with single-cycle waveforms, so I’ve made a little tool to help. It’s called OctaCycle and you can use it for free in your web browser.

It works by resampling each waveform into a sample chain, spanning 7 octaves by default. Each slice corresponds to an octave which can be selected using STRT.

To use OctaCycle, just press Import…, navigate to a folder containing any number of wave files (e.g. the AKWF set), and click Save .zip. You can adjust the starting note and range to your liking, as well as the cents offset (±100). Additionally you can change how the resulting files are named. Note: Your samples are processed entirely in-browser, though your browser may use the word “upload” when you import them.

OctaCycle is currently in alpha. I’ve been using it but my testing is pretty limited, and bug reports are welcome.

Hosanna · 2023-09-06T10:07:31.364Z

Much appreciated !

benamanou · 2025-09-19T14:38:54.814Z

Thank you for the tool

sezare56 · 2025-09-19T15:27:26.198Z

Welcome @spnw

spnw:

7 octaves

With scales ? 64 slices correspond to 5 octaves and 3 semitones…(61+3).
Simply cannot work with 7 octaves chromatically . I did some chromatic sample chains so I am pretty sure.

spnw · 2025-09-19T19:37:48.629Z

There is only one slice for each octave. You choose notes by transposing as usual, using slice locking as an octave selector.

sezare56 · 2025-09-19T20:14:06.495Z

spnw:

There is only one slice for each octave

Ah sorry I missunderstood. Maybe you could make clearer in og post ?

spnw · 2025-09-19T20:27:00.160Z

Sure, I’ve tweaked it a bit. Hope that helps.