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PHYSICAL FEATURES BASED SPEECH EMOTION RECOGNITION USING PREDICTIVE CLASSIFICATION

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Author :  Mohammad Ahsan

Affiliation :  NIT Hamirpur

Country :  Himachal Pradesh, India.

Category :  Computer Science & Information Technology

Volume, Issue, Month, Year :  Vol 8, No 2, April, 2016

Abstract :


In the era of data explosion, speech emotion plays crucial commercial significance. Emotion recognition in speech encompasses a gamut of techniques starting from mechanical recording of audio signal to complex modeling of extracted patterns. Most challenging part of this research purview is to classify the emotion of the speech purely based on the physical characteristics of the audio signal independent of language of speech. This paper focuses on the predictive modeling of audio speech data based on most viable feature set extraction and deployment of these features to predict the emotion of unknown speech data. We have used two most widely used classifiers, a variant of CART and Naïve Bayes, to model the dynamics of interplay of crucial features like Root Mean Square (RMS), Zero Cross Rate (ZCR), Pitch and Brightness of audio signal to determine the emotion of speech. In order to carry out comparative analysis of the proposed classifiers, a set of experiments on real speech data is conducted. Results clearly indicate that decision tree based classifier works well on accuracy whereas Naïve Bayes works fairly well on generality.

Keyword :  Acoustic features, audio emotion recognition, speech emotions and predictive classifier.

Journal/ Proceedings Name :  Computer Science and Information Technology

URL :  http://aircconline.com/ijcsit/V8N2/8216ijcsit05.pdf

User Name : srav
Posted 17-07-2017 on 09:32:09 AEDT



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