EARPHONE DEVICE HAVING NOISE CANCELLATION FUNCTION AND NOISE CANCELLATION METHOD

Title:

EARPHONE DEVICE HAVING NOISE CANCELLATION FUNCTION AND NOISE CANCELLATION METHOD

Document Type and Number:

WIPO Patent Application WO/2016/195239

Kind Code:

A1

Abstract:

Provided is an earphone for eliminating the influence of external noise. The earphone comprises: a first microphone which is positioned outside an ear when the earphone is worn on the ear, so as to receive an input of a first signal that is external noise; a first processing unit for controlling the amplitude and phase of the first signal for each frequency band so as to generate an anti-phase noise cancellation signal and output the same to a speaker; a second microphone which is positioned inside an ear when the earphone is worn on the ear, so as to receive an input of a second signal that is a signal corresponding to the external noise passing through the earphone structure and introduced into the ear and an input of the antiphase noise cancellation signal output to the speaker; and a second processing unit which generates a control signal for controlling, for each frequency band, the phase and amplitude of the remaining noise signal left after a part of the second signal has been cancelled by the antiphase noise cancellation signal, such that the energy level of the remaining noise signal is minimized, and transmits the same to the first processing unit. Therefore, the present invention can achieve effective noise cancellation for not only periodic noise, but also aperiodic noise.

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Inventors:

MIN HOON (KR)

Application Number:

PCT/KR2016/004210

Publication Date:

December 08, 2016

Filing Date:

April 22, 2016

Export Citation:

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Assignee:

SORIZENPLUS CO LTD (KR)

International Classes:

H04R1/10; H04R3/04

Foreign References:

KR20090115450A	2009-11-05
KR20110073404A	2011-06-29
KR20130042101A	2013-04-26
KR101098540B1	2011-12-26
US20040081323A1	2004-04-29

Attorney, Agent or Firm:

JANG, WAN SOO (KR)
장완수 (KR)

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