Title:
BIOLOGICAL SOUND DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/053227
Kind Code:
A1
Abstract:
Provided is a biological sound detection device which can detect a desired biological sound signal while suppressing a signal level of a noise signal. This biological sound detection device (100) comprises: a biological sound collection space (3); a film (8) covering an opening of same; a microphone (2) which is disposed in a back room communicated with the sound collection space (3); and a signal processing unit (7) which processes the biological sound signal. The microphone (2) is composed of an electrostatic capacitive microphone and is disposed so that a pressure applied to the film (8) passes through a back plate and is applied to a vibration film, and a displacement, which is generated by the pressure, of the vibration film starts from a displacement in a direction away from the back plate. The volume of a space between the film (8) and the vibration film is set so that, when the vibration film is displaced in a direction close to the back plate, the vibration film does not contact the back plate and the displacement of the vibration film is a displacement in which the biological sound can be converted to a biological sound signal.
Inventors:
KUCHIJI HIROYUKI (JP)
MASUMOTO NAOKI (JP)
SAKAI RYOSUKE (JP)
FUJIWARA HAJIME (JP)
SESHIMOTO AKIRA (JP)
MASUMOTO NAOKI (JP)
SAKAI RYOSUKE (JP)
FUJIWARA HAJIME (JP)
SESHIMOTO AKIRA (JP)
Application Number:
PCT/JP2023/024667
Publication Date:
March 14, 2024
Filing Date:
July 03, 2023
Export Citation:
Assignee:
NISSHINBO MICRO DEVICES INC (JP)
International Classes:
H04R1/46; A61B7/04; H04R19/04
Foreign References:
| JP2000060845A | 2000-02-29 | |||
| US20140307909A1 | 2014-10-16 | |||
| JP2020535877A | 2020-12-10 | |||
| JP2018102849A | 2018-07-05 |
Attorney, Agent or Firm:
ASAHINA & CO. (JP)
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