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성과물

특허 검색
구분 출원국
출원년도 ~ 키워드

상세정보

등록 광대역 코덱 음성부호화기의 품질향상 방법 및 장치

발명자
이미숙, 김도영, 이병선
출원번호
14354881 (2012.10.26)
공개번호
20140310009 (2014.10.16)
등록번호
9704501 (2017.07.11)
출원국
미국
협약과제
11PI1500, FMC 어커스틱 융합코덱 및 제어기술 연구, 이병선
초록
The present invention relates to a codec device and method for encoding/decoding voice and audio signals in a communication system, wherein: a fixed codebook excited signal is generated by using a pulse index for a voice signal; a first adaptive codebook excited signal is generated by using a pitch index for the voice signal; a fixed codebook signal is generated by multiplying the fixed codebook excited signal by a fixed codebook gain; a first adaptive codebook signal is generated by multiplying the first adaptive codebook excited signal by a first adaptive codebook gain; and a synthesized filter excited signal is generated by adding the fixed codebook signal and the first adaptive codebook signal.
KSP 제안 키워드
Audio signal, Communication system, Fixed codebook, Voice signal