Earphone microphone
AssigneeFunai Electric Co., Ltd.
InventorsFuminori TANAKA, Noriyuki SHIMIZU
Life of this patent
Estimating the term…
Abstract
An acoustic space including a sound output path, first and second sound input paths is formed in a main body casing of an earphone microphone. Output sound from a speaker propagates in the sound output path. Sound input to a first microphone propagates in the first sound input path communicating with outside. Sound input to a second microphone propagates in the second sound input path. The sound output path branches into one path communicating with the outside of the main body casing and the other path communicating with the second sound input path. The earphone microphone amplifies a sound signal output from at least one of the first and second microphones so as to input sound from a sound source outside the main body casing, and suppresses input of the output sound.
Claims5
An earphone microphone comprising:
- a single speaker;
- a first microphone;
- a second microphone;
- a main body casing in which an acoustic space is formed;
- and
- an output controller which amplifies a sound signal output from at least one of the first microphone and the second microphone, wherein
- the acoustic space includes a sound output path in which output sound from the speaker propagates, a first sound input path communicating with outside of the main body casing, in which sound to be input to the first microphone propagates, and a second sound input path in which sound to be input to the second microphone propagates,
- the sound output path branches into one path communicating with the outside of the main body casing and the other path communicating with the second sound input path, and
- the sound signal is amplified so that input sound from a sound source outside the main body casing is input while input of the output sound from the speaker is suppressed.
Dependencies are inferred from the claim text.