spek ☆

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Description:
Acoustic spectrum analyser

Type: Formula | Tracked Since: Dec 27, 2025

Links: Homepage | formulae.brew.sh

Category: Multimedia

Tags: audio spectral-analysis visualization multimedia spectrogram audio-tools

Install: brew install spek

About:
Spek is a cross-platform acoustic spectrum analyzer that visualizes audio frequency distribution in real-time. It helps users analyze the spectral characteristics of audio files to detect compression artifacts, verify mastering quality, and examine frequency balance. The tool provides a clean, minimalist interface that displays spectrograms with precise frequency and time resolution.

Key Features:

Real-time spectrogram visualization with high frequency resolution
Support for multiple audio formats including MP3, FLAC, AAC, and WAV
Clean, minimalist interface with no complex configuration required
Cross-platform compatibility (Linux, macOS, Windows)
Precise frequency analysis up to 20 kHz range

Use Cases:

Analyzing audio file quality and detecting compression artifacts
Verifying frequency balance in music production and mastering
Examining spectral content for audio forensics and restoration
Comparing different audio codec quality levels

Alternatives:

sox – Command-line audio processor with spectrogram generation but requires manual command syntax
audacity – Full-featured audio editor with spectral analysis tools, but heavier and more complex interface
spear – Advanced sinusoidal analysis and resynthesis tool, focused on granular synthesis rather than quick visualization

Version History

Detected	Rev	Change	Commit
Mar 5, 2026 9:48pm	6	REVISION_ONLY	043d2c0a
Dec 27, 2025 12:18pm	5	META	72a2b815
Sep 15, 2025 2:19pm	5	VERSION_BUMP	3798bd75
Sep 13, 2024 10:09pm	2	VERSION_BUMP	7d0e2ef6
Apr 10, 2024 12:33pm	2	VERSION_BUMP	b26f8b4e