Subject: Subtracting regularly repeating sounds From: Kyle Jasmin <kyle.jasmin.11@xxxxxxxx> Date: Wed, 19 Sep 2012 16:59:06 -0400 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>--bcaec501654d005be504ca1447c5 Content-Type: text/plain; charset=ISO-8859-1 Dear all, I wonder if anyone has successfully removed the sound of a helium pump from auditory recordings made in an MRI scanner. It occurs regularly (every 1s), and changes over time (Praat thinks it is a formant with downward trajectory). Any advice is appreciated on subtracting regularly repeating sounds would be appreciated. With thanks, Kyle Jasmin Speech Communication Laboratory, UCL Institute of Cognitive Neuroscience & Laboratory of Brain and Cognition, National Institute of Mental Health --bcaec501654d005be504ca1447c5 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Dear all,<div><br></div><div>I wonder if anyone has successfully removed th= e sound of a helium pump from auditory recordings made in an MRI scanner. I= t occurs regularly (every 1s), and changes over time (Praat thinks it is a = formant with downward trajectory). Any advice is appreciated on subtracting= regularly repeating sounds would be appreciated.</div> <div><br></div><div>With thanks,</div><div><br></div><div>Kyle Jasmin</div>= <div>Speech Communication Laboratory, UCL Institute of Cognitive Neuroscien= ce</div><div>& Laboratory of Brain and Cognition, National Institute of= Mental Health</div> --bcaec501654d005be504ca1447c5--