Model 12 on Manjaro RT Linux: which sample format in PulseAudio?

rdtsc

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Jul 5, 2025
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Ohio, USA
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Model 12, PortaStudio
Hi, tried using Jack2 (over several years) but that was more trouble than it was worth. So removed all traces of pipewire (and when that had no affect) decided to go straight-pulseaudio, which for the most part now works fine. Rarely, get some clicks/pops/audio completely dies, and am looking for ways to tighten up real-time parameters and whatnot.

Discovered that ~/.pulse/daemon.conf has lots of settings, including default sample rate and format. Have set the PC and Model 12 both to 48kHz and that seems to be solid. daemon.conf can also specify the sample format, which defaults to float32le. There are 13 possible settings for pulseaudio sample format but a lot of them are going to be invalid. Is float32le the best format? Sorry for such an obscure question, but nothing is mentioned in the Model 12 user manual. Is it the case where if the sample format is incorrect, it just means extra CPU overhead in conversion? Would love to reduce such if possible. Thanks.
 

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