Re: Human tIming perception (was: RT patch)
From: Lee Revell (rlrevell_at_joe-job.com)
Date: 05/31/05
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To: Steve Finney <saf76@earthlink.net> Date: Tue, 31 May 2005 16:03:55 -0400
On Tue, 2005-05-31 at 12:59 -0400, Steve Finney wrote:
> It takes (IIRC) about a 10 ms or
> so difference in the sounded sequence
> for someone to be able to report that there's been a change, but
> a cnange in the timing of the person's finger movements occurs
> (_immediately_) at perturbations smaller than 10 ms. That is, there
> appears to be some dissociation between conscious perception and
> perceptual/motor behavior.
Any decent guitar player who has used their computer as an effects unit
could tell you this. I can easily perceive the difference between 1.3
and 2.6, and 2.6 and 5ms latencies. And there's at least one person
(also a guitarist, who I have added to the cc:) who swears he cam
perceive the difference between 0.6 and 1.3ms. Soundcard ADCs typically
add 1.5ms latency in each direction, so the actual floor seems to be
around 3-5ms.
Lee
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