摘要
提出了一种新的非线性失真客观评价方法。评价信号选用多频声,原始信号和失真后的信号通过听觉模型处理,得到感知倒谱距离,在此基础上将感知倒谱距离计权后得到所需要的客观评价参量。主观验证实验表明,当选取合适的评价节目源时,主客观评价结果的相关度均可达到0.84以上。
A new objective method for evaluation of nonlinear distortion is proposed. A multi-tone is used as the objective signal. By using an auditory model to process the original and distorted signal, the perceptual cepstrum distance is obtained and used as an objective parameter. Subjective validation experiments verify that when proper signal sources are used, correlation between objective and subjective results can exceed 0.84.
出处
《声学技术》
CSCD
北大核心
2007年第1期84-89,共6页
Technical Acoustics
关键词
非线性失真
多频声
听觉模型
感知倒谱距离
nonlinear distortion
multi-tone
auditory model
perceptual cepstrum distance
