Audio Spectrum Analyzer
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Details for Audio Spectrum Analyzer
Package name
- audio-spectrum-analyzer
License
- MIT
Last updated
- Yesterday - latest/stable
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Acoustic frequency spectrogram viewer & lossless audio cutoff auditor
A full-bandwidth acoustic frequency spectrogram viewer and lossless audio quality auditor for Linux supporting FLAC, WAV, MP3, Opus, Ogg Vorbis, M4A, and AAC. A lightweight Linux alternative to Spek for inspecting audio spectrograms, Nyquist rolloff shelves, and transcoded lossy files.
Key features powered by bundled FFmpeg:
- High-resolution dBFS acoustic spectrogram rendering with selectable scientific color palettes (Fiery, Viridis, Magma, Plasma, Intensity, Cool, Rainbow), adjustable dBFS dynamic range (60-160 dB), and combined or split stereo channel views.
- Real Hann-windowed Welch FFT spectral energy analysis measuring effective high-frequency shelf/cutoff (kHz), True Sample Peak (dBFS), RMS loudness, and Crest Dynamic Range (dB).
- Automatic lossless authenticity detection flagging low-bitrate lossy tracks upscaled or re-encoded into FLAC/WAV containers.
- 24-band spectral rolloff table and frequency-response chart across the full passband up to Nyquist (Fs/2).
- Batch Folder Lossless Quality Auditor with CSV audit export and annotated high-resolution PNG spectrogram report export.
Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by Alexander Kojevnikov or the Spek project.
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The build and commit information is derived from build infrastructure records.
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