arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.06153eess.AScs.SD
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一种客观的音频时标修改质量度量方法

An Objective Measure of Quality for Time-Scale Modification of Audio

Griffith University(格里菲斯大学)

Timothy Roberts, Kuldip K. Paliwal

摘要:

对经过时间尺度修正(TSM)处理的音频进行客观评价仍然是一个悬而未决的问题。最近,发布了具有主观质量标签的时间缩放音频的数据集,并用于创建质量的初始客观度量。本文提出了一种改进的时间尺度音频质量客观度量方法。该方法使用手工制作的功能和完全连接的网络来预测主观平均意见得分。除了特定于TSM伪影的九个特征之外,还使用音频质量的基本和高级感知评估特征。六种方法的对齐进行了探讨,与插值的参考震级谱的长度的测试震级谱给出了最好的性能。所提出的措施达到了平均根均方误差为0.487和平均皮尔逊相关系数为0.865,相当于第98和第82次的主观会话分别。所提出的措施是用来评估时间尺度修改算法,发现Elastique为独奏乐器和语音信号提供了最高的客观质量,而身份锁相相位声码器为音乐信号提供了最高的客观质量和最好的整体质量。可在https://www.github.com/zygurt/TSM上查阅客观衡量标准。

英文摘要:

Objective evaluation of audio processed with Time-Scale Modification (TSM) remains an open problem. Recently, a dataset of time-scaled audio with subjective quality labels was published and used to create an initial objective measure of quality. In this paper, an improved objective measure of quality for time-scaled audio is proposed. The measure uses hand-crafted features and a fully connected network to predict subjective mean opinion scores. Basic and Advanced Perceptual Evaluation of Audio Quality features are used in addition to nine features specific to TSM artefacts. Six methods of alignment are explored, with interpolation of the reference magnitude spectrum to the length of the test magnitude spectrum giving the best performance. The proposed measure achieves a mean Root Mean Squared Error of 0.487 and a mean Pearson correlation of 0.865, equivalent to 98th and 82nd percentiles of subjective sessions respectively. The proposed measure is used to evaluate time-scale modification algorithms, finding that Elastique gives the highest objective quality for Solo instrument and voice signals, while the Identity Phase-Locking Phase Vocoder gives the highest objective quality for music signals and the best overall quality. The objective measure is available at https://www.github.com/zygurt/TSM.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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