2012-05-23 17:11:20 +02:00
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The tools here run an end-to-end audio quality test on Linux using PulseAudio.
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INSTALLATION
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The test depends on PulseAudio virtual devices (null sinks). Without additional
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arguments, run_audio_test.py expects a pair of sinks named "capture" and
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"render". To create these devices at machine startup, place the provided
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default.pa file in ~/.pulse. Alternately, the "pacmd" commands therein can be
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run on the command-line to create the devices.
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2012-06-07 06:00:15 +02:00
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Similarly, place the provided daemon.conf file in ~/.pulse to use high quality
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resampling in PulseAudio. This will reduce the resampling impact on the outcome
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of the test.
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2012-05-23 17:11:20 +02:00
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Build all WebRTC targets as usual (or just the audio_e2e_harness target) to
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generate the VoiceEngine harness.
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USAGE
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Run run_audio_test.py to start. The script has reasonable defaults and will
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use the expected location of audio_e2e_harness. Some settings will usually
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be provided by the user, particularly the comparison tool command-line and
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regular expression to extract the quality metric.
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An example command-line, run from trunk/
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tools/e2e_quality/audio/run_audio_test.py \
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--input=data/voice_engine/audio_short16.pcm --output=e2e_audio_out.pcm \
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--codec=L16 --compare="comparison-tool" --regexp="(\d\.\d{3})"
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