An investigation of subband decomposition and feature-dimension reduction for musical genre classification

Jin Soo   Seo; Junghyun   Kim; Jihyun   Park

doi:10.7776/ASK.2017.36.2.144

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2017 Vol.36, Issue 2 Preview Page

An investigation of subband decomposition and feature-dimension reduction for musical genre classification 음악 장르 분류를 위한 부밴드 분해와특징 차수 축소에 관한 연구

31 March 2017. pp. 144-150

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Abstract

Musical genre is indispensible in constructing music information retrieval system, such as music search and classification. In general, the spectral characteristics of a music signal are obtained based on a subband decomposition to represent the relative distribution of the harmonic and the non-harmonic components. In this paper, we investigate the subband decomposition parameters in extracting features, which improves musical genre classification accuracy. In addition, the linear projection methods are studied to reduce the resulting feature dimension. Experiments on the widely used music datasets confirmed that the subband decomposition finer than the widely-adopted octave scale is conducive in improving genre-classification accuracy and showed that the feature-dimension reduction is effective reducing a classifier's computational complexity.

Keywords

Music classification

Musical genre

Subband feature

Feature dimension reduction

음악 장르는 음악 검색 및 분류 등의 정보 처리 시스템 구현에 있어서 필수적인 요소이다. 일반적으로 장르 분류를 위한 스펙트럼 특징은 음악의 화음 및 강약 구조를 표현하기 위해 부밴드로 분해하여 구해진다. 본 논문은 음악 장르 분류 성능 개선을 위한 특징 추출을 위한 부밴드 분해 방법에 관해 연구하였다. 또한 부밴드 음악 특징의 차수를 줄일 수 있는 방법에 대해서도 연구하였다. 널리 사용되고 있는 장르 데이터셋들에서 실험을 수행하여 널리 사용되고 있는 옥타브 스케일보다 세분화된 부밴드 분해가 장르 분류 성능을 향상시킬 수 있으며, 특징 차수 축소를 결합하여 분류기의 계산량도 줄일 수 있음을 보였다.

키워드

음악 분류

음악 장르

부밴드 특징

특징 차수 축소

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Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 36
No :2
Pages :144-150
Received Date : 2016-12-13
Accepted Date : 2017-03-29
DOI :https://doi.org/10.7776/ASK.2017.36.2.144

The Journal of the Acoustical Society of KoreaISSN:1225-4428(Print) 2287-3775(Online)한국음향학회

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