Re: apis for low latency audio streaming over wifi to ipod touch?
Re: apis for low latency audio streaming over wifi to ipod touch?
- Subject: Re: apis for low latency audio streaming over wifi to ipod touch?
- From: Paul Davis <email@hidden>
- Date: Sun, 7 Mar 2010 18:16:24 -0500
On Sun, Mar 7, 2010 at 1:04 PM, Ben Allison <email@hidden> wrote:
> If the wireless bandwidth is good enough to trust uncompressed audio,
> you'll definitely want that. And if you do in-fact have the luxury of
> buffering ahead with the input audio - that will help immensely because
> you can use a compressed codec.
wireless bandwidth is often not the issue - wireless latency, or
rather, the worst case latency, tends to be where things fall apart
when you down to "real time" stuff.
an awful lot depends on the wifi environment that you have to operate
in, and this is often beyond your control. we've done experiments with
netjack with very low latencies (3-10msec) but they are extremely
sensitive to being unacceptable in the presence of other wifi traffic
that causes beacon timeout and other related wifi arcana.
at the opposite extreme, you have something like the logitech/slim
devices squeezebox ... in my house this streams at least 3x stereo
FLAC data streams to wifi connected players without any bandwidth
issues at all (this includes loading from laptops and other wifi
devices), but it does so with about 300-600msec of latency.
i believe that stephane has been working on an implementation of
libjacknet for the iphone (allowing an iphone to talk over wifi to a
JACK server anywhere on the network) but i don't think its ready for
use by other projects at this time. i am pretty sure that this sends
uncompressed 32 bit floating point data.
--p
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden