摘要
探讨了多标度分形理论在语音信号处理中的应用,提出了语音信号的多标度分形分析 MFASS（Multifractal Approachof Speech Signal）方法,并在 MFASS基础上提出了一种新的基于输出方式的语音质量客观评价方法——OMBFD（ObjectiveMeasures Based on Fractal Dimension）方法。该方法利用多标度分形维数来描述语音信号的质量特征。实验结果表明,OMBFD方法能够描述语音质量好坏程度,其评价结果与主观评价分的相关度达到0.75以上。
The application of multifractal theory to speech signal processing was discussed. First, the Multifractal Approach of Speech Signal (MFASS) was brought forward. Second, the OMBFD (Objective Measure Based on Fractal Dimension), a novel output-based objective measure of speech quality, was presented based on the MFASS. In the OMBFD, the characteristics of speech quality were described by using fractal dimensions of mutlifractal. The experimental results showed that the OMBFD could indicate the degraded degree of speech quality and that the correlation degree with subjective measure reached more than 0.75.
出处
《声学学报》
EI
CSCD
北大核心
2002年第6期531-535,共5页
Acta Acustica
