Cognitively Inspired Audiovisual Speech Filtering by Andrew Abel & Amir Hussain

Author:Andrew Abel & Amir Hussain
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

Keywords

AudiovisualMultimodalExperimentsWiener filteringSpeech enhancement

5.1 Speech Enhancement Evaluation Approaches

To evaluate the performance of the two-stage multimodal speech enhancement system presented in this work, a variety of measures are used. These come in two forms, objective and subjective. Objective measures are those that are calculated automatically by machine. These have the benefit of being faster to perform than subjective listening tests . There are many different approaches with regard to objective tests such as the Perceptual Evaluation of Speech Quality (PESQ) [1] measure, the Itakura-Saito Distance (IS) [2, 3], or SNR level gain . Subjective testing is also used for the evaluation performed in this chapter, which is carried out with the use of human volunteers , and is widely regarded to be the most accurate way of evaluating the performance of speech enhancement algorithms [4]. In these tests, listeners hear filtered speech sentences and score each sentence.

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