AAudio latency

[Flavio Antonioli]

Hi all,

I’ve been doing some latency tests with the AAudio Echo sample, on my
Nexus 6P with the latest developer preview I get between between ~40
and ~100 round trip latency.

With my app and OpenSLES using Fast path settings (192 frames @ 48k) I
get around 25ms.

Perhaps AAudio is not yet tuned on the Nexus 6P? I remember reading
here that something in the AAudio path was not yet using the Fast
path, is this still the case?

Thanks,
Flavio.

[Glenn Kasten]

The OC developer preview releases of AAudio are not yet optimized for latency.

See the Known Issues section at the end of

https://developer.android.com/ndk/guides/audio/aaudio/aaudio.html

We hope to improve latency and other performance metrics

in both the final OC release, and in succeeding releases.

As Phil Burk mentioned in his presentation at I/O 2017,

AAudio is intended to be both easier to use than OpenSL ES, and

a more flexible platform to allow us to make further performance improvements.

See "Best Practices for Android Audio (Google I/O '17)" around 22:30.

[Jeka]

Thanks Glenn. Are there any news regarding the mentioned C++ wrapper for Android versions that do not support AAudio?

Any timetable for the estimated availability?

Greets

Jeka

[Glenn Kasten]

The wrapper is still an important part of the transition strategy.

However I do not have a schedule for it.

[branisla...@eman.cz]

+1 for the wrapper to be able to use Aaudio-like syntax on older SDKs than SDK26.



Dne pátek 21. července 2017 0:36:22 UTC+2 Flavio napsal(a):

Rozšiřujeme náš tým. Více informací najdete na www.eman.jobs

[Dan Albert]

Pretty sure this is the wrapper discussed: https://github.com/google/oboe

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