08MS1900, Development of user-centric contents protection and distribution technology,
Suh Young Ho
Abstract
본논문에서는스펙트럼의주파수및시간방향의특성을결합한오디오인식방법을제안하였다.특히스펙트럼의형태를모사하기위해부밴드로나누고주파수와시간방향의무게중심을구하고정규화하여인식기에사용하였다.무게중심값은스펙트럼의형태적특징을잘나타내면서도간결하여인식기에사용되는특징DB의크기를줄여줄수있는장점이있다.수천곡규모의오디오에대해서, 부밴드스펙트럼의주파수와시간방향무게중심의인식성능을비교하였다. 실험결과주파수와시간방향특징을결합하면상보적으로인식성능을높일수있음을발견하고, 선형변환을이용하여주파수와시간 방향 특징을 하나로 결합하는 방법을 제안하였다.
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