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US 5,844,998 AGranted
Headphone apparatus
AssigneeSony Corporation
InventorKoji Nageno
Life of this patent
Estimating the term…
Abstract
A headphone apparatus comprising an acoustic unit for converting an audio signal to an acoustic sound, a supporting structure for supporting the acoustic unit keeping a predetermined distance to the ear of a listener and an acoustic equalizer provided in front of the acoustic unit for transferring the sound wave output from the acoustic equalizer to the ear of the listener after correcting the frequency characteristic thereof.
Claims4
A full-open type headphone apparatus comprising:
- an acoustic unit for converting an audio signal into an acoustic sound wave;
- supporting means comprised of a plurality of rods;
- and
- an acoustic equalizer connected to said acoustic unit and provided between said acoustic unit and an ear of a listener for correcting the frequency response of the sound wave output from said acoustic unit and for supplying said corrected sound wave to the ear of said listener, said equalizer providing an acoustic cavity of a predetermined volume and including an acoustically resistive coupling between said cavity and an outside environment,
- wherein said rods of said supporting means extend from said equalizer to a head of said listener so that said equalizer is supported a predetermined distance from the ear of the listener and wherein air can circulate from the outside environment into a space between the ear and the equalizer.
2 more elements
Dependencies are inferred from the claim text.