Plugin UniverseKeyframe
Stretches audio in time and shifts its pitch, independently, by reducing the signal to its local extrema and crossfading between playheads over a span the extrema's own density chooses.
| Homepage | https://strandz.it/jigdaw/plugins/keyframe/ |
|---|---|
| Vendor | danja |
| Formats | Jig |
| Roles | Audio Effect |
| Accepts | Audio |
| Produces | Audio |
| Categories | effect |
| Price | free |
| Source | open source |
| Licence | Apache-2.0 |
| Also known as | https://strandz.it/jigdaw/plugins/keyframe/ |
| Parameters | 9: Time rate, Pitch shift, Splice leash, Maximum splice, Analysis threshold, Mix, Output, Quality, Stereo |
| Caution | The algorithm is Matthew Nielsen's, Keyframe Time Stretching via Extrema Sampling, DAFx26, CC BY 4.0. This implementation is written from the paper. It colours the sound: added saturation and some blurring of spectral detail. It is at its best on dense, layered material and percussion, and at its weakest on solo voice and bells. A live input cannot be played faster than it arrives, so a time rate above 100 percent plays at the input's own rate, and with a pitch shift it splices back repeatedly. Below 100 percent the output falls behind the input by up to eight seconds and then skips forward. Both skips are splices, and both are audible. Economy quality joins the extrema with straight lines, which is the roughest reconstruction. Balanced and Full use a smooth curve between them. Full also places each extremum between samples. Changing Quality or Stereo empties the capture and restarts it, so it is heard as a short gap. Latency is a fixed 512 frames, which is two forced keyframe hops. |
| IRI | http://purl.org/stuff/plugin-universe/plugin/keyframe-0a9c2172 |
About this plugin
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Provenance
Harvested from jigdaw, whose metadata is CC0-1.0 . https://github.com/danja/jigdaw
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