Title:
NOISE-CANCELLING HEADPHONE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/255091
Kind Code:
A1
Abstract:
[Problem] The problem addressed by the proposed technology is to provide a noise-cancelling headphone device which prevents deterioration in playback frequency characteristics in a high-frequency range while preventing a reduction in a noise component in a low-frequency range. [Solution] According to the proposed technology, the present invention is a noise-cancelling headphone device comprising: a speaker unit 4 comprising a dome-shaped diaphragm 2 having a centre dome 5 and a sub-dome 6; a microphone 31 which detects ambient noise entering the speaker unit; a baffle plate 17 on which the speaker unit is supported and which is provided with sound emission holes 20, 22 which emit playback sound emitted from the speaker unit; and a signal processing circuit which generates a noise cancellation signal generated on the basis of the ambient noise detected by the microphone, wherein an acoustic resistance member 35 is provided at a position opposite the sub-dome 6 of the dome-shaped diaphragm.
Inventors:
YONEYAMA DAISUKE (JP)
Application Number:
PCT/JP2022/020507
Publication Date:
December 08, 2022
Filing Date:
May 17, 2022
Export Citation:
Assignee:
AUDIO TECHNICA KK (JP)
International Classes:
H04R1/10; G10K11/178; H04R1/28
Foreign References:
| JP2009278403A | 2009-11-26 | |||
| JPS60224396A | 1985-11-08 | |||
| JP2009017175A | 2009-01-22 | |||
| JP2004163875A | 2004-06-10 |
Attorney, Agent or Firm:
TAMURA Eiichi (JP)
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