Title:
SUPER-DIRECTIONAL MICROPHONE SYSTEM
Document Type and Number:
Japanese Patent JP2016001775
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide enough anti-noise at the time of sound collection under a noise environment.SOLUTION: A super-directional microphone system 5 includes an ultrasonic transmitter 1, an ultrasonic receiver 2, and a control unit 3 that extracts and obtain an audio component from the received reflection wave, the ultrasonic transmitter emits ultrasonic to an audio source 4, and the ultrasonic receiver 2 receives the reflection wave of the ultrasonic on which the audio component has been superimposed from an audio source. For example, the control unit 3 switches a standby mode (first mode) in which the ultrasonic receiver 2 is operated as an ultrasonic proximity sensor with a microphone mode (second mode) in which the audio source is operated as a microphone when the audio source is close to a prescribed distance range in the standby mode.
Inventors:
KATO TAKASHI
Application Number:
JP2014120271A
Publication Date:
January 07, 2016
Filing Date:
June 11, 2014
Export Citation:
Assignee:
SAXA INC
International Classes:
H04R23/00; G01S15/10; G01S15/74; H04R3/00; H04R17/00
Previous Patent: VOICE NOTIFICATION DEVICE
Next Patent: MOUNTING ANGLE ADJUSTMENT PROCESSING OF ON-VEHICLE CAMERA AND MOUNTING ANGLE DETECTION DEVICE
Next Patent: MOUNTING ANGLE ADJUSTMENT PROCESSING OF ON-VEHICLE CAMERA AND MOUNTING ANGLE DETECTION DEVICE