@techreport{oai:ipsj.ixsq.nii.ac.jp:00070713,
 author = {山田, 武志 and 牧野, 昭二 and 北脇, 信彦 and Takeshi, Yamada and Shoji, Makino and Nobuhiko, Kitawaki},
 issue = {7},
 month = {Oct},
 note = {雑音環境において高品質の音声通信を実現するためには，音声に重畳している雑音成分を抑圧することが有効である．しかし，雑音抑圧によって雑音の音量が低減する一方で，音声成分にはひずみが生じ，また抑圧しきれなかった雑音成分が残留するという問題が生じる．これらのひずみや残留雑音の特性は，雑音や雑音抑圧アルゴリズムの性質によって変動し，ユーザ体感品質に大きな影響を及ぼす．よって，雑音抑圧音声の品質を適切に評価する手法の確立が必要不可欠である．本稿では，雑音抑圧音声の主観品質評価法と客観品質評価法について述べる．, To provide users with natural and intelligible speech in noisy environments, the use of a noise reduction algorithm, which reduces the noise component in the noisy input speech, can be effective. It is, however, well-known that any noise reduction algorithm unavoidably produces speech distortion and residual noise. Here, the critical issue is that the characteristics of these undesired byproducts vary according to the noise reduction algorithm used and the type of noise to be reduced. It is therefore essential to establish methods that can be used to evaluate the quality of noise-reduced speech. In this paper, we describe subjective and objective quality evaluation methods for noise-reduced speech.},
 title = {雑音抑圧された音声の主観・客観品質評価法},
 year = {2010}
}