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PulseAudio Buffer Size Tests | Linux Sound
https://linuxsound.wordpress.com/2011/03/07/pulseaudio-buffer-size-tests/
PulseAudio Buffer Size Tests. March 7, 2011 kurtrtaylor. It has been a few weeks, but in my defense, I have been pretty busy testing and debugging in this new environment. As an assignee to the Linaro project, my first task was to figure out if increasing the buffer size would enable the ARM cpu to drop into a lower power state.
PulseAudio Configuration | Linux Sound
https://linuxsound.wordpress.com/2011/03/29/pulseaudio-configuration/
The startup script can be used to pass module specific parameters. This is done by uncommenting the line in the file. For example, passing a new tsched buffer size to the ALSA module would look like this: load-module module-alsa-sink tsched_buffer_size=XYZ. Here are all the module specific parameters for the ALSA module (from module-alsa-card.c) :
PulseAudio: pa_buffer_attr Struct Reference
https://freedesktop.org/software/pulseaudio/doxygen/structpa__buffer__attr.html
Maximum length of the buffer in bytes. Setting this to (uint32_t) -1 will initialize this to the maximum value supported by server, which is recommended. In strict low-latency playback scenarios you might want to set this to a lower value, likely together with the PA_STREAM_ADJUST_LATENCY flag.
[SOLVED]Pulseaudio default sample rate and Creative ...
https://bbs.archlinux.org/viewtopic.php?id=262755
speaker-test -D sysdefault:CARD=Creative -c 2 -r 192000 -F S32_LE speaker-test 1.2.4 Playback device is sysdefault:CARD=Creative Stream parameters are 192000Hz, S32_LE, 2 channels Using 16 octaves of pink noise Rate set to 192000Hz (requested 192000Hz) Buffer size range from 8192 to 65536 Period size range from 4095 to 4097 Using max buffer size 65536 …
PulseAudio: Audio Streams - freedesktop.org
https://freedesktop.org/software/pulseaudio/doxygen/streams.html
In case of a buffer underrun the read index is equal or larger than the write index. Unless the prebuf value is 0, PulseAudio will temporarily pause playback in such a case, and wait until the buffer is filled up to prebuf bytes again. If prebuf is 0, the read index may be larger than the write index, in which case silence is played.
FFmpeg Devices Documentation
https://ffmpeg.org/ffmpeg-devices.html
Sets maximum input buffer size in bytes. If the buffering reaches this value, incoming frames will be dropped. Defaults to ‘1073741824’. audio_depth. Sets the audio sample bit depth. Must be ‘16’ or ‘32’. Defaults to ‘16’. decklink_copyts. If set to true, timestamps are forwarded as they are without removing the initial offset.
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