Sound pickup device and sound pickup method

US10841695B2 · kind B2 · utility

Assignee

• YAMAHA CORPORATION · JP

Inventors

• Tetsuto Kawai · Hamamatsu, JP
• Mikio Muramatsu · Fukuroi, JP
• Takayuki Inoue · Hiratsuka, JP
• Satoshi Ukai · Hamamatsu, JP

Key dates

• Filing date: Sep 17, 2019
• Grant date: Nov 17, 2020
• Expiry date: Sep 17, 2039

Classification

• Technology area (CPC —): General

Abstract

A sound pickup method obtains a correlation between a first sound pickup signal to be generated from a first microphone and a second sound pickup signal to be generated from a second microphone, and performs level control of the first sound pickup signal or the second sound pickup signal, according to a ratio of a frequency component of which the correlation exceeds a threshold value.