linuxaudio.org

Svend-Erik Kjær Madsen wrote:

quoted text
> On tir, 2009-01-27 at 15:03 +0100, Cassiel wrote:

>

>> 5.3ms latencies: If you can't sense it... you don't need it

>>

>> r

>

>

> Okay I allways learned that you should't be to proud to admit when your

> wrong.

>

> I just ran a few test with a keyboard playing both the keyboard's

> soundmodule and through midi and Qsynth, and I must admit that latency

> was down to 1.3 ms before the audible time differece disapeard.

to put things in perspective:
the speed of sound in air is around 340m/s. that means that in one

millisecond, the sound travels about 34 cm.
anything under a few ms total systems latency will not be noticeable in

a normal listening environment, because you don't stick your head into

the speakers. a drummer hitting a crash cymbal will have 3ms latency

before the sound reaches his/her ears.
a normal, 2m wide stereo triangle will introduce at least 6 ms latency.
most jazz players i know are perfectly comfortable playing live on stage

while being a few meters apart (true, bass and drums prefer to sit next

to each other, but that will still mean 6-12 ms one-way latency).
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