Automatic coded audio quality assessment is an important task whose progress is hampered by the scarcity of human annotations, poor generalization to unseen codecs, bitrates, content-types, and a lack of flexibility of existing approaches. One of the typical human-perception-related metrics, ViSQOL v3 (ViV3), has been proven to provide a high correlation to the quality scores rated by humans. In this study, we take steps to tackle problems of predicting coded audio quality by completely utilizing programmatically generated data that is informed with expert domain knowledge. We propose a learnable neural network, entitled InSE-NET, with a backbone of Inception and Squeeze-and-Excitation modules to assess the perceived quality of coded audio at a 48 kHz sample rate. We demonstrate that synthetic data augmentation is capable of enhancing the prediction. Our proposed method is intrusive, i.e. it requires Gammatone spectrograms of unencoded reference signals. Besides a comparable performance to ViV3, our approach provides a more robust prediction towards higher bitrates.
Jiang, Guanxin; Biswas, Arijit; Bergler, Christian; Maier, Andreas
Affiliations: Dolby Germany GmbH; Pattern Recognition Lab, FAU Erlangen-Nuremberg, Erlangen, Germany(See document for exact affiliation information.)
AES Convention: 151 (October 2021) Paper Number: 10514
Publication Date: October 13, 2021
Subject: Audio quality
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