# alexkay/spek

Acoustic spectrum analyser

Repository: https://github.com/alexkay/spek
Canonical: https://ross.abutalabs.com/products/spek
Homepage: http://spek.cc
Language: C++
License: GPL-3.0
License Family: copyleft
Last push: 2024-07-28T17:05:08+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5527, "days_push": 766, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3409, forks 284 (observed 2026-08-28T04:08:03.245405+00:00)

## What it is
Spek is a free, open-source acoustic spectrum analyser that renders spectrograms of audio files. It is a cross-platform desktop application built in C++ using FFmpeg for decoding and wxWidgets for the GUI.

## Use cases
- view a spectrogram of an audio file
- analyze frequency content of a recording
- check audio quality or detect encoding artifacts visually
- inspect specific audio channels or streams
- compare DFT window sizes and functions when analyzing sound

## When to choose
- you need a simple, free spectrogram viewer on Linux, Windows, or macOS
- you want to visually inspect frequency content of many audio formats via FFmpeg
- you prefer a lightweight native GUI over command-line tools like sox or ffmpeg filters

## When to avoid
- you need programmatic spectrum analysis or numerical FFT output
- you need real-time live audio analysis rather than file-based inspection
- you need advanced editing or measurement features beyond spectrogram viewing

## Facets
- artifact type: application
- maturity: maintenance
- function: audio-processing, gui, data-visualization
- domain: media, desktop-applications
- platform: windows, bsd, cross-platform
- tags: spectrogram, spectrum-analyzer, ffmpeg, wxwidgets, audio-analysis, audio, linux, macos

## Member repositories
- alexkay/spek (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:03.245405+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:38:32.240526+00:00, confidence not recorded.
  - readme: https://github.com/alexkay/spek (fetched 2026-08-28T04:08:03.245405+00:00, sha 6005ffcc40c9)
  - homepage: http://spek.cc (fetched 2026-08-29T09:32:31.360803+00:00, sha 36802726c46b)
- Data as of 2026-08-30T08:39:29.467469+00:00.