CHAIR source correspondence
The official tickle-examples README licence section identifies the examples as MIT. The adjacent LICENSE is copied verbatim from that pinned repository: Git blob 708dbae874176c33e4780f26084c30e525a964cf.
Exact correspondence
file-correspondence.json compares all 41 native .pd files with that MIT tree. Twenty-one match exactly, including the runtime all-pass helpers, DC-offset helper, touchgate and Chris Moore reverb. These six distinct runtime helper blobs are:
| File | MIT Git blob |
|---|---|
allp~.pd |
9bace62765fe65a64f734845f1e4900837e1554f |
allp4~.pd |
badd7c8d2d8f767e9e8e414f0c6378b675b35948 |
allp-d~.pd |
5dd922ec3c39d5dbd1a035c068dce270e4c29f02 |
chair.dc-offset~.pd |
72be861600fa5f414e3d969d1e5ec98b7f5f1cbc |
chair.touchgate~.pd |
80629f5e3363399074cd98275b3db9778542a457 |
chair.chrismoore-reverb~.pd |
034c7c85523317122e812c39c2890261c5ebdf47 |
Model derivatives
The recovered embedded snare is byte-identical between the historical _main.pd and both current audition wrappers. Its closest inspected MIT example is Pd/examples/A06.percussion-snare.pd, blob 8c02637b292574844a19d1c238456044a214a0cd. The recovered model removes block~ 1 and changes distance normalization from / 0.7071 to / 0.72, with corresponding connections. Those changes affect DSP semantics; they are not described as formatting.
The standalone MIT snare~.pd, blob 2839791c9f4a2593a3605aebe4d3ca6baeb0589d, also occurs unchanged in the later official CHAIR-Pd-library. The delivered embedded model is a related derivative, rather than that exact standalone file.
The shipped bongo matches later-library blob cad41f2b8c771e33f2c88b36e1d6463569a4e198. MIT ancestor fe8211ed24cb142f140fa019a5bf66f0df629e77 has the same resonator core; the later variant changes mute/polyphony routing. The distance helper changes two connections (fc3b05d3a85205d04a85e0c0fc57a11f644fbac2 to aa475c59ffca67982911931b16579b99e565af14). Polyphony changes trigger/routing handling (20fde414b2cf16a4a54ba6563eda607cc81fdbef to fe6d9c4f136f1f344059e818cc0a4a0314016c1d).
These later variants occur in the official CHAIR-Pd-library at adc0b65c. The retained records do not identify the author of every later edit; that repository has no separate project licence file. The MIT grant for inherited material is established. This record distinguishes exact correspondence from derivative provenance and does not assign a fresh blanket grant to unknown additions. The audit did not conclusively identify a genuinely unlicensed addition.
Keep CHAIR’s MIT notice, Philipp Schmalfuß’s model credit, Tom Erbe’s reverb credit and other existing notices. The CHAIR name/logo trademark statement is separate from code reuse. The paper’s CC-BY licence concerns the article. Portfolio research images remain outside this instrument source package.