Patent ID: 6681024
Filing Date: 2004-01-20
Classification: H04R

Abstract:
A device in which a user can assume a user posture, said device comprising:at least one electroacoustic transducer; and a carrier for carrying said at least one electroacoustic transducer and for supporting an upper torso portion of said user, said carrier being made of an acoustically dense material and extending comparatively close to at least one ear of a user who is in the user posture, said at least one electroacoustic transducer being attached to the carrier adjacent the portion thereof which supports the upper torso for acoustic reproduction of sound signals for the ear of the user who is in the user posture, said at least one electroacoustic transducer comprising sound-generation means for generating and emitting sound waves, characterized in that the transducer is constructed for an optimum acoustic reproduction of speech-signal sound waves, additional means for realizing a distinct directivity for the speech-signal sound waves emitted by said at least one electroacoustic transducer, whereby, as a result of said distinct directivity, the speech-signal sound waves emitted from said at least one electroacoustic transducer are directed preferentially to the ear of the user who is in the user posture, and the additional, means comprises a baffle interposed between the at least one electroacoustic transducer and an acoustic free space, the at least one electroacoustic transducer being connected to the baffle in an acoustically imperforate manner, said baffle having at least one sound port for connecting a front volume, situated in front of the sound generation means, to the acoustic free space, and at least one opening for connecting a back volume, situated behind the sound generation means, to the acoustic free space, whereby the baffle delays the speech-signal sound waves emitted into the acoustic free space via the back volume and the at least one opening, with respect to the speech-signal sound waves emitted via the front volume and the at least one sound port, to different extents in different directions.