Subject: Re: FW: Head and Torso simulator (HATS) From: Al Bregman <bregman(at)HEBB.PSYCH.MCGILL.CA> Date: Thu, 20 Jun 1996 15:56:02 -0400Dear Nick, I see no reason for scorn for any question related to auditory perception. I hope you get your answer. - Al --------------------------------------------------------------------- Albert S. Bregman, Professor, Dept of Psychology, McGill University 1205 Docteur Penfield Avenue, Montreal, Quebec, Canada H3A 1B1. Phone: +1 514-398-6103 Fax: -4896 Email: bregman(at)hebb.psych.mcgill.ca --------------------------------------------------------------------- On Thu, 20 Jun 1996, Zacharov Nick (NRC/Tre) wrote: > STANDARD METHODS FOR JUDGING THE QUALITY OF HEAD AND TORSO SIMULATORS > > At this time I am interested in evaluating the various HATS devices > available on the market. All (B&K, Cotex, Head) are aimed at very different > market segments (telecommunication, instrumentation, binaural work, etc. ) > and are thus engineered in different manners. > > It would appear on first inspection that a lot of work has gone into the > design of the head/ears geometry and materials, in all cases, though how the > optimum was found is unclear. Binaural recordings made with such devices > produce a wide range of experiences to different listeners. In most cases > the results are far from what is expected/hoped for. This is not surprising > as we all have very different head gometries and have adapted to this > thoughout our lives. > > I would therefore pose the question to all memebers, that is there any > information on which commercial HATS provides the 'better' representation of > Mr ' Averages' head related transfer functions for use in Binaural studies, > and what is this knowledge based upon? Are there any standard methods for > evaluating such charactersitcs? > > I hope that these questions do not meet with too much scorn from the group, > as I feel that this is an interesting, releveant and relatively undocumented > issue. > > thanks > > ---------------------------------------------------------------------------- > ---------------------------------------- > Nick Zacharov > Acoustic Research Engineer > > Audio Systems > Nokia Research Center Email: nick.zacharov(at)research.nokia.com > PO Box 100 > 33721 Tampere Tel: +358-31-272-5786 > Finland Fax: +358-31-272-5899 > > ---------------------------------------------------------------------------- > ---------------------------------------- >