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Binaural recordings

Tony Woolf tony at howl.demon.co.uk
Thu May 2 11:37:37 EST 1996

In article <4lq2kf$1fq at lorne.stir.ac.uk> bjc at oss.stir.ac.uk "Ben Craven" writes:

> I want to
> demonstrate binaural recordings, ie recordings made with
> microphones in the ear canals of a dummy head with 
> realistic pinnae.  

1) Frontal localisation depends very much on the shape of the
individual's own pinnae.  With an arbitrary set of pinnae you are
unlikely to get good frontal localisation for most listeners.  Usually
frontal sounds go subjectively above the head. 

2) Recording in the vicinity of the ear will give a frequency response
change compared to a conventional mic, depending on exactly where you
put your mic.  Therefore when you play back, it will sound different
from conventional recordings played via the same earphones.  There are
transfer functions in the literature, but I would suggest being aware
of the problem and doing a subjective tweak as necessary.

(Copied to poster as requested)
Tony Woolf  Acoustics consultant specialising in broadcast/recording
            studios, and hearing protection for audio staff and
            musicians.    London UK

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