Subject: Re: About importance of "phase" in sound recognition From: Laszlo Toth <tothl@xxxxxxxx> Date: Thu, 7 Oct 2010 12:49:10 +0200 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>On Thu, 7 Oct 2010, Parncutt, Richard (richard.parncutt@xxxxxxxx) wrote: > So evolutionary-ecological theory predicts phase > sensitivity in the onset, and insensitivity after that. Sorry for using your comment for this purpose, but I would like to point on yet another source of confusion with the term "phase". Mathematically, only periodic signals can have a phase, so anything that has an onset is excluded. In this case you are talking about "delay" or "time shift". Tha main diference is that phase shift is limited by the period length of the periodic signal, while time shift can be of any size. (If I were a mathematician, I'd say that, as a periodic signal must be infinite, no such signal can exist in real life...) Laszlo Toth Hungarian Academy of Sciences * Research Group on Artificial Intelligence * "Failure only begins e-mail: tothl@xxxxxxxx * when you stop trying" http://www.inf.u-szeged.hu/~tothl *