International Journal of Image, Graphics and Signal Processing (IJIGSP)
IJIGSP Vol. 9, No. 4, 8 Apr. 2017
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Speaker Recognition in Mismatch Conditions: A Feature Level Approach
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Author(s)
Index Terms
Feature extraction, Speaker recognition, Segmental features
Abstract
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.
Cite This Paper
Sharada V Chougule, Mahesh S. Chavan,"Speaker Recognition in Mismatch Conditions: A Feature Level Approach", International Journal of Image, Graphics and Signal Processing(IJIGSP), Vol.9, No.4, pp.37-43, 2017. DOI: 10.5815/ijigsp.2017.04.05
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