US 12,726,760 B2Granted

Microphone device

AssigneesDenso Corporation, Toyota Jidosha Kabushiki Kaisha, MIRISE Technologies Corporation

InventorsTakashi Takazawa, Tomoki Tanemura, Shuhei Shimanoe

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Abstract

A microphone device includes a housing, a microphone, a phone microphone, an analog wire, a conversion unit, and a processor. The housing has an opening portion and a horn including a horn opening portion and a horn tube extending from the horn opening portion. The microphone converts a sound that has propagated through the opening portion into an analog signal. The horn microphone converts a sound that has propagated through the horn into an analog signal. The analog wire outputs the analog signal from the horn microphone. The conversion unit acquires the analog signal from the microphone, acquires the analog signal from the horn microphone via a wire different from the analog wire, and converts the analog signal from the microphone and the analog signal from the horn microphone into digital signals. The processor performs digital signal processing on the digital signals converted by the conversion unit.

Claims10

Dependent claims

A microphone device comprising:

a housing having
an opening portion being opened, and
a horn including a horn opening portion and a horn tube, the horn opening portion being opened at a position different from the opening portion, the horn tube being connected to the horn opening portion and extending in one direction;
a microphone accommodated in the housing and configured to convert a sound that has propagated through the opening portion into an analog signal;
a horn microphone accommodated in the housing and configured to convert a sound that has propagated through the horn into an analog signal;
an analog wire accommodated in the housing and configured to output the analog signal from the horn microphone;
a conversion unit configured to
acquire the analog signal from the microphone,
acquire the analog signal from the horn microphone via a wire different from the analog wire, and
convert the analog signal from the microphone and the analog signal from the horn microphone into digital signals;
and
a processor configured to perform digital signal processing on the digital signals converted by the conversion unit.

9 more elements

Dependencies are inferred from the claim text.