Mahesh S. Chavan

Work place: KIT’s College of Engineering, Kolhapur, Maharashtra, India

E-mail: maheshpiyu@gmail.com

Website:

Research Interests: Control Theory, Process Control System, Speech Synthesis, Speech Recognition, Image Processing, Computer systems and computational processes

Biography

Mahesh S Chavan is a Professor, received the B.E. degree in Electronics Engineering from Shivaji University Kolhapur in year 1991. He received M.E. degree from Shivaji University Kolhapur, Maharashtra, India in year 1998. He has received PH. D. degree in Electronics and Communication Engineering from Kurukheshtra University, India in year 2008.Currently he is a professor in Electronics Engineering Department at KIT’s College of Engineering, Kolhapur. He has more than 24 years of teaching experience. His research interest includes Digital Signal Processing, Speech Processing, Advanced Control Systems. Dr. Chavan is actively participating as a member of different professional research societies, like IEEE, ISTE, etc.

Author Articles
Speaker Recognition in Mismatch Conditions: A Feature Level Approach

By Sharada V Chougule Mahesh S. Chavan

DOI: https://doi.org/10.5815/ijigsp.2017.04.05, Pub. Date: 8 Apr. 2017

Mismatch in speech data is one of the major reasons limiting the use of speaker recognition technology in real world applications. Extracting speaker specific features is a crucial issue in the presence of noise and distortions. Performance of speaker recognition system depends on the characteristics of extracted features. Devices used to acquire the speech as well as the surrounding conditions in which speech is collected, affects the extracted features and hence degrades the decision rates. In view of this, a feature level approach is used to analyze the effect of sensor and environment mismatch on speaker recognition performance. The goal here is to investigate the robustness of segmental features in speech data mismatch and degradation. A set of features derived from filter bank energies namely: Mel Frequency Cepstral Coefficients (MFCCs), Linear Frequency Cepstral Coefficients (LFCCs), Log Filter Bank Energies (LOGFBs) and Spectral Subband Centroids (SSCs) are used for evaluating the robustness in mismatch conditions. A novel feature extraction technique named as Normalized Dynamic Spectral Features (NDSF) is proposed to compensate the sensor and environment mismatch. A significant enhancement in recognition results is obtained with proposed feature extraction method.

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