From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261439AbVEaUEz (ORCPT ); Tue, 31 May 2005 16:04:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261419AbVEaUE3 (ORCPT ); Tue, 31 May 2005 16:04:29 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:37030 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S261208AbVEaUEB (ORCPT ); Tue, 31 May 2005 16:04:01 -0400 Subject: Re: Human tIming perception (was: RT patch) From: Lee Revell To: Steve Finney Cc: Florian Schmidt , linux-kernel@vger.kernel.org In-Reply-To: <10471395.1117558743885.JavaMail.root@wamui-milano.atl.sa.earthlink.net> References: <10471395.1117558743885.JavaMail.root@wamui-milano.atl.sa.earthlink.net> Content-Type: text/plain Date: Tue, 31 May 2005 16:03:55 -0400 Message-Id: <1117569835.23283.24.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.3.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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