Projects Newly released projects
SoundPalette
Newly released project. Its psychoacoustic metrics were added in July 2026 (v0.5.0). Not yet seen to be widely used in the community. Check its validation before relying on it.
C++ tool for game audio that analyses a folder of sound effects and draws each file as a glyph in a palette, built as a static library, a command-line tool (including a lint mode for CI) and a desktop app. Its psychoacoustic block reports ISO 532-1 loudness (N5), DIN 45692 sharpness, Daniel & Weber roughness and an experimental fluctuation strength.
| Repository | https://github.com/onyx-prismantium/soundpalette |
|---|---|
| Language | C++ |
| Kind | Application A program to run, with a graphical or command-line interface; no programming needed. |
| Group | newly released First released less than about a year ago, and not yet seen to be widely used in the community. |
| Licence | FSL-1.1-Apache-2.0 Functional Source License 1.1, a source-available licence that is not OSI-approved: it allows any use except a competing commercial product or service, and each release becomes Apache-2.0 two years after publication. The README states that releases up to and including v0.7.0 were published under Apache-2.0. |
| Latest release | v0.8.0 (2026-09) |
| Last commit | 2026-09-27 active |
| GitHub stars | 0 |
| Maintainers | onyx-prismantium |
| AI assistance | disclosed (The repository contains a CLAUDE.md file, and 49 of its 54 commits carry "Co-Authored-By: Claude" trailers.) |
| How to cite | The project does not say how to cite it. Cite the repository with the version or commit you used. |
| Entry checked | 6 October 2026 |
What it implements
| Metric | Edition | Functions | Validation (as stated) | Notes |
|---|---|---|---|---|
| Zwicker loudness | ISO 532-1:2017 time-varying, reported as N5; monaural; since v0.5.0 | sp::compute_psycho | compared with MoSQITo | new No MoSQITo code is ported. |
| Sharpness | DIN 45692:2009 from time-averaged specific loudness; since v0.5.0 | sp::compute_psycho | compared with MoSQITo | new |
| Roughness (Daniel & Weber) | Daniel & Weber (1997) since v0.5.0 | sp::compute_psycho | compared with MoSQITo | new |
How it was validated
As reported by the project; LISQM has not run the code. Two implementations that agree can still share the same error. Kinds of evidence.
- Zwicker loudness · ISO 532-1:2017
compared with MoSQITo
- Compared with MoSQITo 1.2.1 on calibrated test signals, used as a development-time reference (
NOTES.md,tools/psycho_oracle).
- Compared with MoSQITo 1.2.1 on calibrated test signals, used as a development-time reference (
- Sharpness · DIN 45692:2009
compared with MoSQITo
- Compared with MoSQITo 1.2.1 (tolerance ±5 %).
- Roughness (Daniel & Weber) · Daniel & Weber (1997)
compared with MoSQITo
- Compared with MoSQITo 1.2.1 with a wider tolerance (±15 %); the README notes that published Daniel & Weber implementations differ by about 10–20 %.
Notes
- The psychoacoustic metrics were added in v0.5.0 (July 2026), with "mapping v2".
- Calibration convention: a signal measuring −23 LUFS is assumed to play at
ref_spldB SPL (default 75, allowed range 60–85). The value is stored in every manifest and profile, and comparisons between differentref_splvalues are refused. - Also computes fluctuation strength in vacil, flagged as experimental; the README names no model for it.
Before you rely on it
- The Functional Source License is source-available, not an OSI-approved open-source licence; check its competing-use restriction before reusing the code.
NOTES.mddocuments simplifications: the third-octave bands come from an STFT rather than the standard's filter bank, the temporal processing was tuned to MoSQITo's N5 values, and roughness uses a fixed 70 Hz weighting and 28 instead of 47 channels. Tolerances (±5 % for stationary loudness and sharpness, ±10 % for N5, ±15 % for roughness) are the acceptance criterion.- Loudness in sones depends on the declared playback level (
ref_spl), not on a measured calibration.
Sources
- https://github.com/onyx-prismantium/soundpalette
- https://github.com/onyx-prismantium/soundpalette/blob/main/README.md
- https://github.com/onyx-prismantium/soundpalette/blob/main/LICENSE.md
- https://github.com/onyx-prismantium/soundpalette/blob/main/NOTES.md
- https://github.com/onyx-prismantium/soundpalette/blob/main/core/include/soundpalette/psycho.h