[maemo-developers] Low Latency Audio Capture on the N900, QAudioInput BUG: has 5000msec latency, Meego audio future

[From: Ian Stirling]

Benno Senoner wrote:
> Thanks to all for your responses, yes I agree with what you said.
> I will try to track the evolution of the  audio subsystem on meego and
> provide my feedback and findings.
> I'll discuss the issue with the JACK authors too what they think about
> it, about adding power management to jack etc.
> (the main author of Jack2, Stephane Letz is one of the coauthors to
> LinuxSampler too).
> 
> It's understandable that Nokia will probably not change the audio
> subsystem for the current Meego version, so at least
> they should try to provide a stable working system, giving developers
> a way to achieve <50msec mic to speaker latency.

As I understand it, pulseaudio on the n900 achieves 5ms latency, and a 
few dozen microseconds of jitter.

It's just not for normal users.

I point you at:

http://linuxplumbersconf.org/2009/slides/Jyri-Sarha-audio_miniconf_slides.pdf