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Objective Measures of Voice Quality for Mobile Handsets

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Mobile phones include noise suppression to facilitate use in noisy environments; therefore listening tests in accordance with ITU-T P.835 are appropriate for comparing handset performance. Objective speech quality measures are an often used cheaper alternative; however the results can be misleading, as rank order compared to listening tests is not always preserved. We compare the outputs of PESQ, POLQA, and 3Quest with the results of P.835 listening tests. As expected, measures intended for use with noise suppression perform that task better than tools that were not initially designed to do so. However, improved measures, that aim to preserve rank order while minimizing both maximum error and RMSE, would improve the reliability of comparative evaluations in background noise.

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