spectroterm – terminal audio spectrum analyser

spectroterm is a terminal-based audio spectrum analyser for visualising sound playing through a computer. It converts audio frequency information into animated bars and optional graphical indicators within a curses interface.

The application is designed for users who prefer terminal software but still want a visual representation of their music. Its configurable displays allow the frequency and loudness ranges to be adjusted, while peak markers help show recent changes in signal intensity.

spectroterm supports PipeWire and PulseAudio audio systems. It also provides controls for display synchronisation, custom characters and audio capture, making it adaptable to different terminal environments.

This is free and open source software.

Key Features

• Real-time terminal spectrum visualisation of currently playing audio.
• Capture audio through PipeWire and PulseAudio.
• Optional graph axes showing frequency and loudness information.
• Animated frequency bars with adjustable fall speed.
• Peak markers that remain visible for a configurable period.
• Three-colour display mode for distinguishing signal levels.
• Custom foreground colours and terminal characters.
• Configurable minimum and maximum frequency ranges.
• Adjustable minimum and maximum decibel levels.
• Automatic resizing when terminal dimensions change.
• Optional borders around the spectrum display.
• Configurable audio sample rate and sample duration.
• Adjustable display delay for synchronising visualisations with audio.
• Specialised delay adjustment for Bluetooth audio devices.
• PipeWire loopback handling to avoid unwanted headset profile switching.
• Select a particular PipeWire audio node for monitoring.

Website: github.com/sparklost/spectroterm
Support:
Developer: sparklost
License: GNU General Public License v3.0

spectroterm is written in Python. Learn Python with our recommended free books and free tutorials.

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