audio-numerics-review SKILL.md skillA
audio-numerics-review from gourdja/sonic-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add gourdja/sonic-skills/audio-numerics-review@git:20260515.3a80b75Pins git:20260515.3a80b75 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- gourdja/sonic-skills
- Path
skills/audio-numerics-review/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260515.3a80b75, committed May 15, 2026
- Size
- 3,308 bytes
- Repository stars
- 4
- License
- Unlicense
Reviews audio DSP code for numerical correctness. Use when the user asks to review, audit, or check DSP code for correctness issues — filters, feedback loops, fixed-point arithmetic, accumulation loops, or any numeric computation in audio code. Trigger on "check this filter for NaN", "why does my reverb blow up?", "is this numerically stable?", "why do I hear DC in my output?". Pairs with audio-dsp-review (realtime safety); this skill covers numeric correctness. Flag issues proactively.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Audio Numerics Review Floating-point is not real math. IEEE 754 edge cases — denormals, NaN propagation, catastrophic cancellation, precision loss — silently produce wrong audio output without crashing. You won't find them with a debugger; you find them by knowing where to look. ## Step 1 — Find numeric-critical paths Locate every function doing floating-point or integer DSP: filter state loops, feedback delay lines, envelope followers, RMS/energy accumulators, pitch detectors, fixed-point paths (CMSIS-DSP, SIMD int16/int32), any division whose denominator may be zero. ## Step 2 — Scan for violations | Violation | Where to look | Symptom | |-----------|--------------|---------| | **Denormal floats** | IIR state vars, reverb tanks, delay feedback | Sudden 100× CPU spike when signal decays | | **NaN / Inf** | Divisions, `sqrt`, `acos`/`asin`, peak normalizers | Silence or noise that can't be traced | | **Catastrophic cancellation** | DC-blocking filters, near-Nyquist biquads, first-order diff | Noise floor jumps, loss of precision | | **Fixed-point overflow** | Q15/Q31 multiply, CMSIS paths, SIMD int16 | Audible distortion / wrapping | …
Read the whole file at its exact version.
How to install
mdr add gourdja/sonic-skills/audio-numerics-review@sha256:1959446555f9790cThe line at the top of this page pins the label git:20260515.3a80b75, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_reocivhxllil5qbz)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on May 15, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3308 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
gourdja/sonic-skills · 4 stars · license Unlicense · pushed 2026-10-12 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_reocivhxllil5qbz GET https://markdownregistry.com/api/v1/resolve?ref=gourdja/sonic-skills/audio-numerics-review GET https://markdownregistry.com/api/v1/blob/1959446555f9790cbedca103829d6412bc95b09c4c1e16ab501633409f4d7696
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.