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Browse Prior Art Database

Headset for Two- and Three-Dimensional Sound Reproduction

IP.com Disclosure Number: IPCOM000118380D
Original Publication Date: 1997-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Wittig, H: AUTHOR

Abstract

Disclosed is a headphone which provides a user the ability to hear audio events in three dimensions.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 75% of the total text.

Headset for Two- and Three-Dimensional Sound Reproduction

      Disclosed is a headphone which provides a user the ability to
hear audio events in three dimensions.

      It is proposed to utilize at least two electro-acoustic
transducers on each side of the headphone which can be implemented in
various different geometrical manners.  Preferred embodiments are two
horizontal, two vertical, or three or four triangular, trapezoidal or
tetragonal disposed transducers.

      Two horizontal disposed transducers enable reproduction of
sound in a horizontal plane, and thus sound originating in front of
or behind the user can be distinguished.  That geometrical
arrangement is consistent with common quadrophony technology
utilizing four external  loudspeakers.  Two vertical disposed
transducers, on the other side, enable the hearer to distinguish
sound originating from underneath or above his head.  But an
arrangement of two transducers on each side allows only a two
dimensional sound reproduction.

      To enable three dimensional sound reproduction, at least three
transducers on each side of the headphone have to be provided.  A
trapezoidal arrangement of four transducers is a combination of a
horizontal and a vertical arrangement of two transducers and,
therefore, does not need any co-ordinate transformation since the
co-ordinate system has not changed with respect to the implementation
with two transducers.  It is noteworthy that the direction of
propag...