Subject: fundamental From: David Smith <smithd@xxxxxxxx> Date: Thu, 4 Aug 2011 10:31:38 -0500 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>--Apple-Mail-1--842750693 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Perhaps this illusion is the result of an acoustic rather than physiological or cognitive phenomena. Record a sound from a musical instrument - something with a well defined harmonic signature - and edit the recording to remove the fundamental. Play the recording through a speaker, in an ordinary room (not an anechoic chamber) and re-record it and examine the recording. Does the fundamental re-appear (at reduced amplitude) in the new recording? Has anyone tried this? Dave --Apple-Mail-1--842750693 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1 <html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; = -webkit-line-break: after-white-space; "><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal = normal normal 12px/normal Helvetica; min-height: 14px; "><br></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; font: normal normal normal 12px/normal Helvetica; = min-height: 14px; "><br></div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal = normal normal 12px/normal Helvetica; min-height: 14px; ">Perhaps this = illusion is the result of an acoustic rather than physiological or = cognitive=A0phenomena.</div><div style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal = 12px/normal Helvetica; min-height: 14px; "><br></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; font: normal normal normal 12px/normal Helvetica; = min-height: 14px; "><br></div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font = face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px Helvetica">Record a = sound from a musical instrument - something with a well defined harmonic = signature - =A0and edit the recording to remove the fundamental. = =A0</font></div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><font face=3D"Helvetica" = size=3D"3" style=3D"font: 12.0px Helvetica">Play the recording through a = speaker, in an ordinary room (not an anechoic chamber) and =A0re-record = it and examine the recording.</font></div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font = face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px Helvetica">Does the = fundamental re-appear (at reduced amplitude) in the new = recording?</font></div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><br></div><div>Has anyone tried = this?</div><div><br></div><div>Dave</div> </body></html>= --Apple-Mail-1--842750693--