Analysis and extraction of LP-residual for its application in speaker verification system under uncontrolled noisy environment

Misra, Songhita; Laskar, Rabul Hussain; Baruah, Ujwala; Das, Tushar Kanti; Saha, Partha; Choudhury, Suman Paul

doi:10.1007/s11042-015-3020-8

Cited by 3 publications

(2 citation statements)

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“…The results shows speaker recognition rate using excitation features such as LP residual and GVV samples is low. After LP analysis the residual signal retains only higher-order relations between the samples and the lower order relations are eliminated [27]. In case of R-MFCC the performance is degraded by almost 14% when compared with neutral environment in GMM and SVM.…”

Section: Resultsmentioning

confidence: 99%

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Speaker Recognition in Emotional Environment using Excitation Features

Thomas¹,

Spoorthy

Sobhana³

et al. 2020

2020 Third International Conference on Advances in Electronics, Computers and Communications (ICAECC)

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Speaker Recognition is known as the task of recognizing the person speaking from his/her speech. Speaker recognition has many applications including transaction authentication, access control, voice dialing, web services, etc. Emotive speaker recognition is important because in real life, human beings extensively express emotions during conversations, and emotions alter the human voice. A text-independent speaker recognition system is proposed in the work. The system designed is for emotional environment. The proposed system in this work is trained using the speech samples recorded in neutral environment and the system evaluation is performed in an emotional environment. Here, excitation source features are used to represent speakerspecific details contained in speech signal. The excitation source signal is obtained after separating the segmental level features from the voice samples. The excitation source signal is almost considered as a noise so identifying a speaker in an emotive environment is a challenging task. Excitation features include Linear Prediction (LP) residual, Glottal Closure Instance (GCI), LP residual phase, residual cepstrum, Residual Mel-Frequency Cepstral Coefficient (R-MFCC), etc. A decrease in performance is observed when the system is trained with neutral speech samples and tested with emotional speech samples. Different emotions considered for emotional speaker identification are happy, sad, anger, fear, neutral, surprise, disgust, and sarcastic For the classification of speakers the algorithms used are Gaussian Mixture Model (GMM), Support Vector Machine (SVM), K-Nearest Neighbor(KNN), Random Forest and Naive Bayes.

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Section: Resultsmentioning

confidence: 99%

“…Features extracted from the vibration pattern of vocal folds are known as excitation source features. These features can be used to identify the shape of glottal pulse, strength of excitation, and characteristic of open and closed phase of glottis are captured [27]. Prosodic features gives the fundamental frequency and energy contours.…”

Section: Introductionmentioning

confidence: 99%