dsp-algorithm-guide SKILL.md skillA
dsp-algorithm-guide 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/dsp-algorithm-guide@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/dsp-algorithm-guide/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260515.3a80b75, committed May 15, 2026
- Size
- 3,649 bytes
- Repository stars
- 4
- License
- Unlicense
Implementation guide for common DSP algorithms. Use when the user asks "implement a lowpass filter", "how do I write a compressor", "reverb algorithm", "FFT convolution", "pitch shifter", or "oscillator with no aliasing". Trigger on phrases like "biquad filter", "state variable filter", "feedback delay network", "phase vocoder", "overlap-add", "PolyBLEP", or any request to implement a specific DSP processing block.
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
# DSP Algorithm Guide Three steps: pick the right algorithm family, address implementation concerns, then verify correctness. ## Step 1 — Identify the algorithm family | User request | Algorithm family | Recommended starting point | |---|---|---| | Lowpass / highpass / bandpass / notch | Biquad (IIR) | Direct Form II transposed | | High-quality parametric EQ, resonant filter | Biquad cascade or SVF | State Variable Filter (SVF) | | Shelving / high-shelf / low-shelf | Biquad (Audio EQ Cookbook) | Peaking EQ or shelf coefficients | | Reverb (algorithmic) | FDN or Schroeder/Moorer | Feedback Delay Network (FDN) | | Reverb (convolution / IR) | OLA / OLS | Overlap-Add with FFT | | Compressor / limiter / expander / gate | Level detector + gain computer | RMS or peak detector + knee curve | | Pitch shift / time stretch | Phase vocoder or granular | Phase vocoder for tonal material | | Anti-aliased oscillator | BLIT / PolyBLEP / wavetable | PolyBLEP for simple waveforms | | Spectral processing / analysis | STFT pipeline | Overlap-Add / Overlap-Save | | Waveshaper / saturation | Memoryless nonlinearity | Soft-clip with oversampling | ## Step 2 — Implementation concerns …
Read the whole file at its exact version.
How to install
mdr add gourdja/sonic-skills/dsp-algorithm-guide@sha256:a1d84107cdca2ea3The 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_v4nfslyw6cbfsaln)
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 (3649 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_v4nfslyw6cbfsaln GET https://markdownregistry.com/api/v1/resolve?ref=gourdja/sonic-skills/dsp-algorithm-guide GET https://markdownregistry.com/api/v1/blob/a1d84107cdca2ea3af0ca290c3bfdfc5543c25002101ad2c3f15021e3e1cae89
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.