音響レンズおよび収音装置 - Tokyo Metropolitan University

Title:

音響レンズおよび収音装置

Document Type and Number:

Japanese Patent JP6661118

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To improve accuracy of picking up a target sound in an environment where noise exists in comparison with a directional microphone and a configuration in which signal processing is performed.SOLUTION: An acoustic lens (3) disposed between a microphone device (12) for converting sound into an electric signal and a sound source (2) includes: a plurality of openings (11) into which sound waves from the sound source (2) are introduced; and a plurality of waveguides (21) connecting between each opening (11) and the microphone device (12). Lengths of the waveguides (21) are set according to a distance from the sound source (2) to each opening (11) so that path lengths (L1+L4) of sound waves from the source (2) to the microphone device (12) coincides.SELECTED DRAWING: Figure 3

Inventors:

Takahashi Yoshinori
Jun Tanaka

Application Number:

JP2016026942A

Publication Date:

March 11, 2020

Filing Date:

February 16, 2016

Export Citation:

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