ecasound

Multitrack audio recorder and real-time effect processor

brewmacoslinux

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Multitrack-capable audio recorder and effect processor

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Record audio from default input device to a WAV file$ ecasound -i alsa -o output.wav

Play an audio file with reverb effect applied$ ecasound -i input.wav -ef3 -o alsa -efr -erm 200

Convert audio file format with gain adjustment$ ecasound -i input.mp3 -ea:120 -o output.wav