Nasal Place Detection with Acoustic Phonetic Parameters

Suk-Myung Lee; Jeung-Yoon Choi; Hong-Goo Kang

doi:10.7776/ASK.2012.31.6.353

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2012 Vol.31, Issue 6 Next Page

Nasal Place Detection with Acoustic Phonetic Parameters 음향음성학 파라미터를 사용한 비음 위치 검출

31 August 2012. pp. 353-358

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Abstract

This paper describes acoustic phonetic parameters for detecting nasal place in a knowledge-based speech recognition system. Initial acoustic phonetic parameters are selected by studying nasal production mechanisms which are radiation of the sound through the nasal cavity. Nasals are produced with differing articulatory configuration which can be classified by measuring acoustic phonetic parameters such as band energy ratio, band energy differences, formants and formant differences. These acoustic phonetic parameters were tested in a classification experiment among labial nasal, alveolar nasal and velar nasal. An overall classification rate of 57.5% is obtained using the proposed acoustic phonetic parameters on the TIMIT database.

Keywords

Nasal

Nasal place

Acoustic phonetic parameters

Speech recognition

논문은 지식기반의 음성인식 시스템에서 비음 위치를 검출하기 위한 음향음성학적 파라미터를 제시하였다. 음향음성학적 파라미터는 앞선 연구자들의 연구내용을 토대로 비강을 통해 음성이 발성될 때 나타나는 특징을 기반으로 하여 선별하였다. 선별된 파라미터들은 대역별 에너지 비율, 대역별 에너지의 차이, 포먼트 그리고 포먼트의 차이로써, 비음 위치에 따라 변화하는 조음기관의 영향을 잘 나타내 주었다. 이러한 음향음성학 파라미터를 이용하여 비음을 순비음(/m/), 치경비음(/n/), 그리고 연구개비음(/ng/)으로 나누는 실험을 진행하였고, TIMIT 데이터베이스로 실험하였을 때 57.5%의 검출률을 얻을 수 있었다.

키워드

비음

비음 위치

음향음성학 파라미터

음성인식

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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 : 31
No :6
Pages :353-358
Received Date : 2012-04-19
Accepted Date : 2012-06-15
DOI :https://doi.org/10.7776/ASK.2012.31.6.353

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

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