Subject: time variance of psychoacoustics parameters From: Ernesto Accolti <ernestoaccolti@xxxxxxxx> Date: Fri, 28 Aug 2009 21:01:42 -0300 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>This is a multi-part message in MIME format. ------=_NextPart_000_0029_01CA2822.BE8D4990 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Dear list, Is there any known model to calculate Zwicker's parameters (Sharpness, = Roughness, Fluctuation Strength) if the masking patterns or the specific = loudness (N'(z)) depend not only on the critical band (z) but on time.=20 Several authors reported time independent values of Zwicker's parameters = although the noise signals described therein seem to be time dependent = e.g. the modulation frequency or masking depth =CE=94L varies throughout = time. Up to now, I didn't find how they carry out this stage. Is it just = an average? I don't think so at first glance Thanks in advance, Ernesto. ------=_NextPart_000_0029_01CA2822.BE8D4990 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"> <META content=3D"MSHTML 6.00.6002.18071" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>Dear list,</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>Is there any known model to calculate = Zwicker's=20 parameters (Sharpness, Roughness, Fluctuation Strength) if the masking = patterns=20 or the specific loudness (N'(z)) depend not only on the critical band = (z) but on=20 time. </FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>Several authors reported time = independent values of=20 Zwicker's parameters although the noise signals described therein seem = to be=20 time dependent e.g. the modulation frequency or masking depth =CE=94L = varies=20 throughout time. Up to now, I didn't find how they carry out this stage. = Is it=20 just an average? I don't think so at first glance</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV><FONT face=3DArial = size=3D2> <DIV><BR>Thanks in advance,</DIV> <DIV> </DIV> <DIV>Ernesto.</FONT></DIV></BODY></HTML> ------=_NextPart_000_0029_01CA2822.BE8D4990--