Analysis and extraction of LP-residual for its application in speaker verification system under uncontrolled noisy environment
Sub-segmental analysis of excitation source may contain significant speaker-specific information pertaining to speaker verification. In this paper, the excitation source feature has been explored for design of speaker verification system (SVS). The baseline of the system is extraction of speaker-spe...
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| Veröffentlicht in: | Multimedia tools and applications 2017, Vol.76 (1), p.757-784 |
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| creator | Misra, Songhita Laskar, Rabul Hussain Baruah, U. Das, T. K. Saha, P. Choudhury, S. P. |
| description | Sub-segmental analysis of excitation source may contain significant speaker-specific information pertaining to speaker verification. In this paper, the excitation source feature has been explored for design of speaker verification system (SVS). The baseline of the system is extraction of speaker-specific information from LP-residual features by modelling the speakers through different supervised and unsupervised models, based on which they will be accepted or rejected. Direct LP-residual (DLR) as well as DCT coefficients of LP-residual (DCTLR) are approximated as the excitation source features for the system. The models are processed in two different level of analysis, namely, sentence level analysis as well as voice-segment level approach (VSLA), with the variations in the frame size of the input. Effects of the change of frame size in the input vectors are observed. Studies are carried over telephonic database collected in practical environment. A comparative analysis has been presented for the combination of models, features and the two levels of analysis for the given data. The experimental study suggests that application of VSLA on unsupervised models with DCTLR as input, provides a performance which is 14.21 % better than sentence level analysis of the models. |
| doi_str_mv | 10.1007/s11042-015-3020-8 |
| format | Article |
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The baseline of the system is extraction of speaker-specific information from LP-residual features by modelling the speakers through different supervised and unsupervised models, based on which they will be accepted or rejected. Direct LP-residual (DLR) as well as DCT coefficients of LP-residual (DCTLR) are approximated as the excitation source features for the system. The models are processed in two different level of analysis, namely, sentence level analysis as well as voice-segment level approach (VSLA), with the variations in the frame size of the input. Effects of the change of frame size in the input vectors are observed. Studies are carried over telephonic database collected in practical environment. A comparative analysis has been presented for the combination of models, features and the two levels of analysis for the given data. 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| subjects | Analysis Approximation Computer Communication Networks Computer Science Data Structures and Information Theory Design engineering Excitation Extraction Frames Identification systems Larynx Multimedia Multimedia computer applications Multimedia Information Systems Neural networks Noise Sentences Speakers Special Purpose and Application-Based Systems Speech Studies |
| title | Analysis and extraction of LP-residual for its application in speaker verification system under uncontrolled noisy environment |
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