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PulseAudio

Julia package for playing back audio using PulseAudio

Readme

PulseAudio.jl

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This is a Julia package to play audio using the PulseAudio daemon common on Linux systems. This was originally part of @dancasimiro's WAV.jl package but has been split out and adapted to the JuliaAudio ecosystem.

Getting Started

PulseAudio.jl supports the SampledSignals.jl API, and provides a writable stream. Simply create a stream with the PulseAudioSource constructor. These stream will accept regular Arrays with each channel as a column, or you can use SampledSignals' SampleBuf values to take advantage of automatic sample-rate and element type conversions.

Examples

Hear a test tone:

sig = sin.(2pi*330*linspace(0, 0.5, 0.5*48000)) * 0.2;
sink = PulseAudioSink()
write(sink, sig)
close(sink)

Play a file:

buf = load("somefile.wav")
sink = PulseAudioSink()
# if the samplerates don't match the data will be transparently resampled
write(sink, buf)
close(sink)

Listen to the same file downsampled

buf = load("somefile.wav")
sink = PulseAudioSink(name="Downsampled", description="8kHz", samplerate=8000)
write(sink, buf)
close(sink)

First Commit

10/12/2017

Last Touched

4 months ago

Commits

241 commits

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