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Re: Individualized HRTF measurements

Hi Thibaud,


I’ve been using the AuSIM Binaural Probe Micset for many years now, which is pretty much plug and play. (http://www.ausim3d.com/eC/transducers.html). We use them with a pair of Sound Devices microphone preamps (MP-1) to provide the 12V phantom power that is needed to drive the microphones. They are very good and pretty easy to use. For hygiene/holding them in place, we use a combination of surgical tape and/or Etymotic foam rings.


I recently came across much cheaper, consumer binaural microphones but don’t have much experience with them. (http://www.soundprofessionals.com/cgi-bin/gold/category.cgi). I bought a pair of MS-EHB-2 for some work I was doing and was pretty impressed. I wouldn’t use them for HRTF recordings (microphones are in the wrong position) but they’ve been useful for prototyping signal processing algorithms for things like hearing aids/cochlear implants.






Alan Kan, PhD
Assistant Scientist | Binaural Hearing and Speech Laboratory

University of Wisconsin-Madison
Room 563, Waisman Center / 1500 Highland Avenue / Madison, WI, 53705
Phone: +1-608-262-7483 / Fax: +1-608-263-2918
Web: http://www.waisman.wisc.edu/~ahkan






From: AUDITORY - Research in Auditory Perception [mailto:AUDITORY@xxxxxxxxxxxxxxx] On Behalf Of Elena Grassi
Sent: Monday, March 07, 2016 9:49 AM
To: AUDITORY@xxxxxxxxxxxxxxx
Subject: Re: [AUDITORY] Individualized HRTF measurements


Hi Thibaud, years ago i carried out HRTF's measurements using microphones Knowles FG3329 and I have used other similar microphones by the same company. You can find a description of the procedure in http://www.isr.umd.edu/Labs/NSL/Files/grassi_ICAD2003.pdf

The microphones were surrounded by a layer of swimming ear plug silicon and then embedded into silicon moulding material (normally used for making ear impressions for hearing aids). The compound hardens within minutes, conforming to the shape of the ear canal and sealing it.

For hygiene purposes, the ear molding impression material was changed for each subject (also to have a better seal of the earcanal). The microphone itself never came into contact with the ear canal, and we cleaned the wires with alcohol.

Hope this helps, good luck with your measurements.



On Fri, Mar 4, 2016 at 2:52 AM, Thibaud <thibaud.leclere@xxxxxxxxxx> wrote:

Dear List,


I intend to carry out some individualized HRTF measurements. I thought some device would exist in purpose of such measurement by including tiny microphones and a system to maintain their position into the ear canal but I feel more like each team uses its “homemade” setup… I only saw a “binaural microphone” designed by Bruel and Kjaer which is very expensive.


I was then wondering what microphone do you use/propose/advice  for individualized HRTF measurements ? Do you also know a way to hold the microphone in position during the measurement procedure ? And finally, do you use any type of protection in between the microphone and the ear canal in order to avoid a direct contact and then get the measurement more hygienic (given that the microphones will inserted in several subjects’ ear canals…) ?


Any help or advice on these matters would be very appreciated.

Thank you very much by advance,




PostDoc Researcher

Université de Lyon - École Nationale des Travaux Publics de l'État (ENTPE)

Laboratoire Génie Civil et Bâtiment (LGCB)

Rue Maurice Audin - 69518 Vaulx-en-Velin - France

Office B022

Tel : (+33)