Title:
VOICE CAPTURING STRUCTURE WITH NOISE CANCELLING FUNCTION
Document Type and Number:
WIPO Patent Application WO/2018/235254
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an easy-to-produce and inexpensive voice capturing structure with a noise cancelling function. The voice capturing structure includes a body having a through hole, wherein the through hole has one end which is a sound inlet part and another end which is a sound reception part. The through hole has therein a noise attenuation part that has a cross-sectional area in which the attenuation of the sound introduced from the sound inlet part is such that a region including voice equal to or less than a reference frequency < a region exceeding the reference frequency, and the body has, on the one end thereof, a noise reflection part that reflects sound in the region exceeding the reference frequency.
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Inventors:
KITAMURA YOSHIHARU (JP)
Application Number:
PCT/JP2017/023145
Publication Date:
December 27, 2018
Filing Date:
June 23, 2017
Export Citation:
Assignee:
NORTH VILLAGE LABS INC (JP)
International Classes:
A61F11/08; G10K11/16
Foreign References:
| JPS58160030U | 1983-10-25 | |||
| JPS63153592A | 1988-06-25 | |||
| US20080011308A1 | 2008-01-17 | |||
| US20030159878A1 | 2003-08-28 | |||
| US20150328052A1 | 2015-11-19 | |||
| JP2015082689A | 2015-04-27 | |||
| US4702238A | 1987-10-27 |
Attorney, Agent or Firm:
SONODA & KOBAYASHI INTELLECTUAL PROPERTY LAW (JP)
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