Spektra 0.9.0

Full Changelog: v0.8.2...v0.9.0

Spektra 0.8.2

Full Changelog: v0.8.1...v0.8.2

Spektra 0.8.1

What's Changed

• ci: bump the actions group with 4 updates by @dependabot[bot] in #1
• build: Bump the nuget-minor-and-patch group with 4 updates by @dependabot[bot] in #3
• build: Bump Microsoft.NET.Test.Sdk from 17.14.1 to 18.7.0 by @dependabot[bot] in #5
• build: Bump coverlet.collector from 6.0.4 to 10.0.1 by @dependabot[bot] in #7
• build: Bump the avalonia group with 3 updates by @dependabot[bot] in #8

Full Changelog: v0.8.0...v0.8.1

Spektra 0.8.0

Full Changelog: v0.7.2...v0.8.0

Spektra 0.7.2

Full Changelog: v0.7.1...v0.7.2

Spektra 0.7.1

Full Changelog: v0.7.0...v0.7.1

Spektra 0.7.0

Full Changelog: v0.6.0...v0.7.0

Spektra 0.6.0

Full Changelog: v0.5.0...v0.6.0

Spektra 0.5.0

Spektra is a desktop audio spectrum analyzer: view spectrograms, get an automated "is this really lossless?" verdict, and compare two encodes side by side.

Highlights

• Bandwidth verdict: detects a lossy low-pass cutoff and labels a file Lossless, Suspicious, Lossy, or band-limited, with a likely codec/bitrate guess.
• Preferences: FFT size, window function (Hann/Hamming/Blackman/Blackman-Harris), palette (Magma/Viridis/Inferno/Grayscale), dynamic-range floor, and a linear or logarithmic frequency axis.
• Inspection: cursor readout (time/frequency/dB) and a toggleable average-spectrum overlay.
• Export: save the spectrogram to PNG or copy it to the clipboard.
• Compare: stacked spectrograms on a shared time axis, synced zoom/pan, manual and automatic alignment, A/B flip, a signed A-B difference view with a numeric diff score, a null test, and drift detection.
• Companion CLI: spektra report <files> and spektra scan <folder> for headless bandwidth checks and library transcode scans.

Downloads

Platform	File
Windows GUI (installer)	Spektra-0.5.0-Setup.msi
Windows GUI (portable)	Spektra-0.5.0-win-x64.zip
CLI, Windows	spektra-cli-0.5.0-win-x64.zip
CLI, Linux	spektra-cli-0.5.0-linux-x64.zip
CLI, macOS Intel	spektra-cli-0.5.0-osx-x64.zip
CLI, macOS Apple Silicon	spektra-cli-0.5.0-osx-arm64.zip

All builds are self-contained, so no .NET install is needed. On Linux/macOS, mark the CLI executable after extracting: chmod +x spektra.

ffmpeg + ffprobe are required on PATH for decoding; the GUI can download them for you.

Licensed under PolyForm Strict 1.0.0.