[squeak-dev] Sound mixing makes nasty noises

K K Subbu kksubbu.ml at gmail.com
Sun Jan 3 07:02:38 UTC 2021


On 03/01/21 6:23 am, tim Rowledge wrote:
> I've also realised that there is a definite buffer-size aliasing
> problem regardless of the alsa/pulse setup.
> 
> Given that the normal buffer size is set to 120mS worth of samples,
> consider this snippet

On Pi, the cpu gets throttled based on temperature and power rail 
voltage levels. This may cause variations in sound latency.

You can monitor actual latency on your sink/playback/output device with:
----
~$ pactl list sinks | grep -i 'sink\|latency'
Sink #0
	Latency: 75611 usec, configured 76000 usec
	Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY
----

HTH .. Subbu


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