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Patent Searching and Data


Title:
SOUND DEVICE AND HEADPHONE
Document Type and Number:
Japanese Patent JP2000059876
Kind Code:
A
Abstract:

To attain the ease of maintenance of a noise canceling headphone and to reduce its maintenance cost.

This headphone is separately provided with a headphone section 10 where microphone elements 14L, 14R that detect sound around the user and signal sound transduction elements 15L, 15R having a function as a sound source to cancel the sound around the user are housed in headphone cases 13L, 13R and a control circuit section 20 configuring a noise canceling headphone with the headphone section 10. The control circuit section 20 is adjusted to have a prescribed frequency characteristic and processing a gain characteristic at a prescribed frequency to reduce the dispersion. The headphone section 10 is provided with gain adjustment sections 16L, 16R.


Inventors:
ABE KENSAKU
KITO KAZUHISA
NISHIMOTO HIROBUMI
YABUKI KEIKO
Application Number:
JP22875998A
Publication Date:
February 25, 2000
Filing Date:
August 13, 1998
Export Citation:
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Assignee:
SONY CORP
International Classes:
A61F11/14; G10K11/178; H04R3/00; H04R1/10; (IPC1-7): H04R1/10; G10K11/178; H04R3/00
Attorney, Agent or Firm:
Masami Sato