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Cava
Features
Frequency Band Visualizers
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Displays real-time frequency spectrum bars from audio output or input directly in the terminal.
Audio Visualizers
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Displays real-time frequency spectrum bars from audio output directly in the terminal.
Audio Spectrum Decompositions
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Implements FFT-based frequency decomposition to map audio samples to bar heights for spectrum display.
Audio FFT Analyzers
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Converts time-domain audio samples into frequency-domain magnitudes using a Fast Fourier Transform.
Audio Backend Extensions
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Captures audio data from multiple system sound servers including PulseAudio, PipeWire, ALSA, JACK, and CoreAudio.
FIFO-Based Captures
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Captures audio via FIFO pipes from system sound servers for decoupled processing.
Audio Source Captures
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Reads audio data from PulseAudio, PipeWire, ALSA, JACK, and CoreAudio for spectrum analysis.
Adjustable Bar Displays
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Displays real-time audio bars with adjustable sensitivity, width, and colors via keyboard controls.
Baud-Rate Adaptive Throttling
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Provides adaptive throttling to maintain smooth audio visualizations over slow serial connections.
Bar Column Renderers
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Renders spectrum bars as columns of terminal characters with Unicode block glyphs.
Live Configuration Reloading
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Applies config file changes immediately via key press or signal without restarting.
Dynamic Configuration Reloading
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Listens for SIGUSR1 or key press to re-read config and apply changes without restarting.
Keyboard-Controlled Appearance Adjustments
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Allows keyboard-controlled adjustment of visualizer appearance without restarting.
Live Appearance Configurations
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Adjusts visualizer appearance and reloads configuration on the fly without restarting.
PipeWire Backend Visualizers
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Provides PipeWire integration for terminal-based audio spectrum visualization.
Serial Connection Optimizers
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Optimizes framerate, bar count, and height for smooth visualizations over slow serial connections.
Standard Output Streaming
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Outputs normalized bar amplitude values as plain text or binary data to standard output for piping.
Amplitude Data Streamers
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Outputs normalized bar amplitude values as plain text or binary data to standard output for piping.
Serial Terminal Audio Renderers
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Renders audio frequency bars on serial terminals using runtime-generated character sets.
PulseAudio Backend Analyzers
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Captures audio from PulseAudio and other backends for real-time spectrum analysis.
Baud Rate Adaptive Visualizers
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Optimizes framerate, bar count, and height for smooth audio visualizations over slow serial connections.
Low-Bandwidth Serial Visualizers
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Optimizes audio visualizations for smooth rendering over low-speed serial connections.
Serial Data Minimizers
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Limits bars, height, spacing, and framerate to reduce data per frame and fit within serial link capacity.
Amplitude Value Streams
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Streams raw bar amplitude values to STDOUT for piping into external tools.
Serial Bandwidth Optimizers
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Reduces framerate, bar count, and height to keep visualizations smooth over slow serial connections like RS232.
Runtime Glyph Generators
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Generates custom terminal glyphs at runtime for spectrum rendering on limited terminals.
Serial Terminal Renderers
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Displays real-time frequency bars on serial-connected terminals by generating custom character sets at runtime.
STDOUT Data Streams
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Streams bar amplitude values to STDOUT for piping into external scripts or applications.
Terminal and System Tools
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Cross-platform audio visualizer for the terminal.
Audio Visualizers
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Console-based audio visualizer for ALSA.
