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What is the meaning of fragments and fragment_size in ...
https://unix.stackexchange.com/questions/477463/what-is-the-meaning-of-fragments-and-fragment-size-in-pulseaudio-alsa-modules
Following advice on a blog post called Pulseaudio And Latency, I tried loading module-alsa-sink with special fragments and fragment_size parameters to ensure low latency. However, I'm not sure what exactly these are doing. The latency reported by pactl list sinks doesn't have an obvious correspondence to the values I put in these parameters. Here's a short script I …
PulseAudio: pa_buffer_attr Struct Reference
https://freedesktop.org/software/pulseaudio/doxygen/structpa__buffer__attr.html
PulseAudio 15.0. Data Fields. pa_buffer_attr Struct Reference ... The server sends data in blocks of fragsize bytes size. Large values diminish interactivity with other operations on the connection context but decrease control overhead. It is recommended to set this to (uint32_t) -1, which will initialize this to a value that is deemed sensible ...
linux - PulseAudio cannot read buffers at consistent rate ...
https://stackoverflow.com/questions/56210653/pulseaudio-cannot-read-buffers-at-consistent-rate
When calling pa_simple_new, set the fragsize field of the pa_buffer_attr argument to the wanted latency in bytes. PulseAudio will try to achieve that latency, but may not reach it depending on the hardware capabilities. (pavucontrol probably asks for a low latency.
simple_capture receives sound from pulseaudio driver …
https://github.com/mackron/miniaudio/issues/106
simple_capture receives sound from pulseaudio driver only when another program captures audio (pavucontrol,guvcview,ffmpeg,firefox). #106. Closed ... Capture attr: maxlength=5280, tlength=1760, prebuf=-1, minreq=-1, fragsize=1760; internalBufferSizeInFrames=1320 665 1 [PulseAudio] ma ...
PulseAudio: Audio Streams - freedesktop.org
https://freedesktop.org/software/pulseaudio/doxygen/streams.html
Overview. Audio streams form the central functionality of the sound server. Data is routed, converted and mixed from several sources before it is passed along to a final output. Currently, there are three forms of audio streams: Playback streams - Data flows from the client to the server. Record streams - Data flows from the server to the client.
Async Playback – Developer Documentation – PulseAudio
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Developer/Clients/Samples/AsyncPlayback/
This code is not made by any PulseAudio developer. It may not be best practice, but it seems to work and could be used as a start for a playback application that uses the async API. This simple application plays a constant note and uses a low latency setup (20 ms) that should be suitable for games.
PulseAudio – high CPU usage / Multimedia and Games / Arch ...
https://bbs.archlinux.org/viewtopic.php?id=115292
I tried to set up pulseaudio on my computer, but it has very bad performance. When I play a music in Totem, pulseaudio uses about 18% of my CPU, and sometimes it uses 70-80%, and slow down my system. I tried this setting also, but the result even worse: pulseaudio uses always over 50% of my CPU. My CPU: Intel Celeron 2.10GHz.
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