Subject: Re: Insert earphones for neurophysiology From: "Ewan A. Macpherson" <emacpher@xxxxxxxx> Date: Tue, 5 Dec 2006 14:24:13 -0500 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>On 5 Dec 2006 at 12:58, Dan Tollin wrote: > Has anybody out there tried to use some of the new insert earphones for > auditory neurophysiology studies? I am thinking of phones such as the > Etymotic ER-4 (or 6) or the Shure E series. A couple of years ago, I did quick, free-field measurements (with a reference mic a couple of inches from the earphone) of the transfer functions of the ER-4s and one of the Shure E models. They both seemed to have a very deep notch at around 20 kHz, so perhaps not so good for cats etc. -- Ewan Macpherson, Ph.D. <emacpher@xxxxxxxx> Research Investigator, Central Systems Laboratory Kresge Hearing Research Institute, U. Mich. http://www-personal.umich.edu/~emacpher