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성과물

특허 검색
구분 출원국
출원년도 ~ 키워드

상세정보

등록 음성특성에 기반한 잡음제거방법 및 장치

발명자
김태중, 김주엽, 조한진
출원번호
14681187 (2015.04.08)
공개번호
20150294667 (2015.10.15)
등록번호
9583120 (2017.02.28)
출원국
미국
협약과제
12VD1900, D2D연결과 실시간 음성인식 제공 디지털미디어허브 개방형 HW/SW 플랫폼 기술 개발, 김태중
초록
Disclosed herein is a noise cancellation apparatus and method, which select in advance parameters to be used for noise cancellation in a reference voice signal section by generating a reference voice signal in advance before a voice signal is generated, thus improving noise cancellation effects. The noise cancellation apparatus includes a parameter initialization unit for determining an initial value of a parameter to be used for noise cancellation, based on reference signals filtered for respective frequencies, a parameter estimation unit for receiving the initial value of the parameter, and estimating the parameter in response to signals that are input after being filtered for respective frequencies, a gain estimation unit for calculating gains for respective frequencies based on the parameter from the parameter estimation unit, and a gain application unit for cancelling noise by applying the gains to the signals that are input after being filtered for respective frequencies.