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Combining the evidences of temporal and spectral enhancement techniques for improving the performance of Indian language identification system in the presence of background noise

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Abstract

Language Identification has gained significant importance in recent years, both in research and commercial market place, demanding an improvement in the ability of machines to distinguish between languages. Although methods like Gaussian mixture models, hidden Markov models and neural networks are used for identifying languages the problem of language identification in noisy environments could not be addressed so far. This paper addresses the performance of automatic language identification system in noisy environments. A comparative performance analysis of speech enhancement techniques like minimum mean squared estimation, spectral subtraction and temporal processing, with different types of noise at different SNRs, is presented here. Though these individual enhancement techniques may not yield good performance with different types of noise at different SNRs, it is proposed to combine the evidences of all these techniques to improve the overall performance of the system significantly. The language identification studies are performed using IITKGP-MLILSC (IIT Kharagpur-Multilingual Indian Language Speech Corpus) databases which consists of 27 languages.

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Acknowledgments

The authors are grateful to Dr K Sreenivasa Rao, Associate Professor and his team at School of Information Technology (SIT), IIT Kharagpur for providing IIT Kharagpur-Multilingual Indian Language Speech Corpus) databases which consists of 27 languages. We would also like to thank their suggestions and helpful discussions.

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  1. ECE Department, V R Siddhartha Engineering College, Vijayawada, Andhra Pradesh, India

    Phani Kumar Polasi & Kalva Sri Rama Krishna

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  1. Phani Kumar Polasi
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  2. Kalva Sri Rama Krishna
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Correspondence to Phani Kumar Polasi.

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Polasi, P.K., Sri Rama Krishna, K. Combining the evidences of temporal and spectral enhancement techniques for improving the performance of Indian language identification system in the presence of background noise. Int J Speech Technol 19, 75–85 (2016). https://doi.org/10.1007/s10772-015-9326-0

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  • DOI: https://doi.org/10.1007/s10772-015-9326-0

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