US 11,386,880 B2 · Acoustic output apparatus

Abstract

The problem to be solved is to improve a noise cancelling function. A detection microphone, a speaker, and a housing are included. The detection microphone detects noise and has an input vibrating plate. The speaker has an output vibrating plate. The housing accommodates at least the speaker and the detection microphone therein. The input vibrating plate and the output vibrating plate are disposed approximately in the same orientation. This ensures that a sound is output from the speaker while a sound is input to the detection microphone with the input vibrating plate and the output vibrating plate facing each other, thus making it possible to bring the input vibrating plate and the output vibrating plate closer to each other. As a result, it is less likely for a phase lag to take place between the sound output from the speaker and the sound input to the detection microphone, thus providing higher noise detection accuracy of the detection microphone and contributing to an improved noise cancelling function.

Claims11

Dependent claims

An acoustic output apparatus, comprising:

a detection microphone configured to detect first noise, wherein the detection microphone includes an input vibrating plate;
a speaker configured to output a first sound, wherein the speaker includes an output vibrating plate;
a register configured to adjust the first sound output from the speaker;
and
a housing that includes the speaker and the detection microphone;
and
a bracket that includes:
a sound conduit configured to pass the first sound output from the speaker;
and
a base surface section, wherein
the detection microphone is attached to an upper portion of a front surface of the base surface section,
the sound conduit protrudes from a lower portion of the front surface of the base surface section,
the speaker is attached to a rear surface of the base surface section,
a center hole of the register is attached to an adjustment hole on the rear surface of the base surface section, wherein a diameter of the center hole is smaller than a diameter of the adjustment hole, and
the input vibrating plate and the output vibrating plate are substantially in a same orientation.

12 more elements

Dependencies are inferred from the claim text.

Acoustic output apparatus

Life of this patent

Acoustic output apparatus

Life of this patent

Abstract

Claims11