Re: [AUDITORY] Microphones for HRTF measurement

[Florian Denk <florian.denk@xxxxxxxxxxxxxxxx>]

Dear Isaac,

we have been using MEMS microphones a lot for such purposes, specifically the Knowles SPH1642HT5H. This particular microphone has a top-port configuration, which makes it convenient to solder. Generally, MEMS microphones have good frequency response, distortion and noise specs, which are by now (to my best knowledge) at least as good or better than in electret condenser microphones (ECM) of comparable size. One benefit of MEMS against ECM microphones that should be considered specifically for measurements in the ear is their much lower variation of sensitivity with temperature.
Also, I would like to point out an anthropometric earplug for HRTF/HpTF measurements that holds such a MEMS microphone in place, which Fabian Brinkmann from TU Berlin and myself developed: http://doi.org/10.5281/zenodo.2574395. It can simply be 3D printed from the published stl files.

Best,
Florian

Am 02.06.2021 um 11:55 schrieb Engel Alonso Martinez, Juan I:

Dear all,

 

I am looking to purchase some microphones for HRTF measurements, ideally with minimal noise and distortion, and a wide and flat frequency response.

I have come across some email threads from 2009 in which they recommended the Sennheiser KE 4-211-2, but those were already discontinued back then. Does anyone have any more up-to-date suggestions, by any chance?

 

Thank you,

 

--

Isaac Engel

PhD student

Dyson School of Design Engineering

Imperial College London

https://www.imperial.ac.uk/people/isaac.engel

 

-- 
Dr. Florian Denk

Deutsches Hörgeräte Institut GmbH
(German Institute of Hearing Aids)
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