MOSRA: Joint Mean Opinion Score and Room Acoustics Speech Quality Assessment

• URL: http://arxiv.org/abs/2204.01345v1
• Date: Mon, 4 Apr 2022 09:38:15 GMT
• Title: MOSRA: Joint Mean Opinion Score and Room Acoustics Speech Quality Assessment
• Authors: Karl El Hajal, Milos Cernak, Pablo Mainar
• Abstract summary: This paper presents MOSRA: a non-intrusive multi-dimensional speech quality metric. It can predict room acoustics parameters alongside the overall mean opinion score (MOS) for speech quality. We also show that this joint training method enhances the blind estimation of room acoustics.
• Score: 12.144133923535714
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The acoustic environment can degrade speech quality during communication (e.g., video call, remote presentation, outside voice recording), and its impact is often unknown. Objective metrics for speech quality have proven challenging to develop given the multi-dimensionality of factors that affect speech quality and the difficulty of collecting labeled data. Hypothesizing the impact of acoustics on speech quality, this paper presents MOSRA: a non-intrusive multi-dimensional speech quality metric that can predict room acoustics parameters (SNR, STI, T60, DRR, and C50) alongside the overall mean opinion score (MOS) for speech quality. By explicitly optimizing the model to learn these room acoustics parameters, we can extract more informative features and improve the generalization for the MOS task when the training data is limited. Furthermore, we also show that this joint training method enhances the blind estimation of room acoustics, improving the performance of current state-of-the-art models. An additional side-effect of this joint prediction is the improvement in the explainability of the predictions, which is a valuable feature for many applications.

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