An update on Android's audio latency

Re:An update on Android's audio latency by crazygringo on Friday March 05, 2021 @09:59PM (#26364821)

Oh I'd never considered lower power consumption as a reason for increased latency.

I don't immediately see the relationship however -- is there anything you could point me to, to explain the mechanism?

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Re:An update on Android's audio latency by kllrnohj on Friday March 05, 2021 @10:07PM (#26364851)

To have minimal latency basically everything needs to stay active constantly. CPU is constantly awake sending or receiving data. Radio is constantly awake. Interconnects constantly awake. If you instead send a large buffer, you can sleep between bursts of work. Dropping to lower power states in the interim, and only a small DSP doing the audio output needs to be awake.

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Re:An update on Android's audio latency by nemetroid on Saturday March 06, 2021 @07:13AM (#26366895)

Overhead that’s not linear with the buffer size. The cost (in CPU time, etc.) of updating a 480 sample buffer is similar to that of a 64 sample buffer.

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