New approach for quality analysis of the hearing impaired using combined temporal and spectral processing
by Hemangi Shinde; Vibha Vyas; Vikram C. Mathad
International Journal of Biomedical Engineering and Technology (IJBET), Vol. 41, No. 3, 2023

Abstract: This paper proposes a novel approach of combining temporal and spectral speech enhancement methods for hearing impaired (HI) listeners. The temporally processed speech is combined with five different types of maximum a-posterior (MAP) estimators, namely, magnitude squared spectrum estimator (MSSE), MSSE using posteriori SNR uncertainty, using priori SNR uncertainty, soft masking using posterior SNR uncertainty on magnitude squared spectrum and using priori SNR uncertainty on magnitude squared spectrum. The temporal, spectral and the combined temporal spectral algorithms are evaluated in terms of quality for HI listeners using noisy speech signals at -5, 0, 5 and 10 dB SNR in a cafeteria, a station, in traffic and train noise environments. The experimental results depict that the new combined temporal spectral algorithm showed significantly better results over the individual temporal, spectral methods as well as a previous combined temporal and spectral method investigated and tested by the author earlier for HI people.

Online publication date: Fri, 31-Mar-2023

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