Abstract
We proposed and evaluated a speech intelligibility estimation method for binaural signals. The assumption here was that both the speech and competing noise are directional sources. We trained a mapping function between the subjective intelligibility and some objective measures. We attempted SNR calculation on a simple binaural to monaural mix-down, better SNR selection from left and right channels (better-ear), and a sub-band wise better-ear selection (band-wise betterear). For the mapping function training, we tried neural networks (NN), support vector regression (SVR), and random forests (RF). A combination of better-ear and RF gave the best results, with root mean square error (RMSE) of about 4% and correlation of 0.99 in a closed set test.
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Kondo, K., Taira, K. (2017). Introduction and Comparison of Machine Learning Techniques to the Estimation of Binaural Speech Intelligibility. In: Pan, JS., Tsai, PW., Huang, HC. (eds) Advances in Intelligent Information Hiding and Multimedia Signal Processing. Smart Innovation, Systems and Technologies, vol 63. Springer, Cham. https://doi.org/10.1007/978-3-319-50209-0_21
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DOI: https://doi.org/10.1007/978-3-319-50209-0_21
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