论文标题
对组合层间提示扭曲对整体音频质量的影响的调查
Investigations on the Influence of Combined Inter-Aural Cue Distortions on Overall Audio Quality
论文作者
论文摘要
在开发算法上有很大的兴趣，可以预测感知编码信号的音频质量，以避免开发时间内广泛的听力测试成本。尽管许多已建立的算法可预测具有单声脉（稍微）畸变的信号质量（PEAQ，POLQA），可预测立体声和多通道空间信号的质量降解仍然被认为是一个挑战。空间扭曲引起的音频质量降解通常是根据众所周知的ARA层扭曲扭曲措施（例如，诸如耳膜间水平差异扭曲（ILDD），耳膜间时间差异（ITDD）和Aural Aural Aural Aural Aurt-Aural Aurt-Aural Aross跨相关畸变（IACCD）来衡量的。但是，尚未对多个刺激测试中表达的复杂信号中的整体音频质量下降的影响。我们提出了一种系统的方法，该方法通过一组代表性的信号引入了空间扭曲的控制组合，并通过分析听力测试得分对所述信号来评估它们对整体感知质量下降的影响。从这项研究中，我们得出了设计有意义的失真度量的指南，这些量度衡量了考虑了膜间提示失真相互作用。
There is a considerable interest in developing algorithms that can predict audio quality of perceptually coded signals to avoid the cost of extensive listening tests during development time. While many established algorithms for predicting the perceived quality of signals with monaural (timbral) distortions are available (PEAQ, POLQA), predicting the quality degradation of stereo and multi-channel spatial signals is still considered a challenge. Audio quality degradation arising from spatial distortions is usually measured in terms of well known inter-aural cue distortion measures such as Inter-aural Level Difference Distortions (ILDD), Inter-aural Time Difference Distortions (ITDD) and Inter-aural Cross Correlation Distortions (IACCD). However, the extent to which their interaction influences the overall audio quality degradation in complex signals as expressed - for example - in a multiple stimuli test is not yet thoroughly studied. We propose a systematic approach that introduces controlled combinations of spatial distortions on a representative set of signals and evaluates their influence on overall perceived quality degradation by analyzing listening test scores over said signals. From this study we derive guidelines for designing meaningful distortion measures that consider inter-aural cue distortion interactions.
