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C-Qual - a validation of PESQ using degradations encountered in forensic and law enforcement audio

机译：C-Qual - 使用法医执法音频中遇到的降级的PESQ验证

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摘要

Assessment of speech quality of law-enforcement audio recordings is important as degradations introduced by non-ideal recording conditions can reduce the intelligence value of such recordings. Furthermore a model that predicts speech quality could be beneficial for assessing the performance of audio collection and enhancement systems. The Perceptual Evaluation of Speech Quality (PESQ) algorithm (ITU-T P.862) has been validated for degradations common in telecommunications. In this paper we apply PESQ to degradations typically encountered in law-enforcement. Also we present a subjectively labeled database (C-Qual) containing distortions encountered in law enforcement scenarios. Comparing the prediction by PESQ and the observed opinions provided by the listeners shows that PESQ is less suitable for estimating the speech quality in this context.
机译：言语执法音频录音的言语质量评估很重要，因为非理想记录条件引入的降级可以减少这种录音的智力价值。此外，预测语音质量的模型可能是有益的，用于评估音频收集和增强系统的性能。语音质量（PESQ）算法（ITU-T P.862）的感知评估已被验证用于电信中共同的降级。在本文中，我们将PESQ应用于通常在执法中遇到的降级。此外，我们还提供了一个主观标记的数据库（C-Fol），包含在执法方案中遇到的扭曲。比较PESQ的预测和监听器提供的观察意见表明PESQ不太适合在此上下文中估计语音质量。

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