NDLI: Extraction of adaptive wavelet packet filter-bank-based acoustic feature for speech emotion recognition

Content Provider	IET Digital Library
Author	Huang, Yongming Wu, Ao Zhang, Guobao Li, Yue
Abstract	In this paper, a wavelet packet (WP)-based acoustic feature extraction approach is proposed for automatic speech emotion recognition (SER). First, the issue of optimising the WP filter-bank structure for giving classification task is presented as a tree pruning problem, and different tree-pruning criteria are investigated. On this basis, a novel WP-based feature is introduced for SER, namely discriminative band WP power coefficients. Finally, a SER system is built and extensive experiments are carried out. Experimental results show that the proposed feature considerably improves emotion recognition performance over conventional mel frequency cepstrum coefficient (MFCC) feature. The proposed feature extraction approach is promising since it can be easily extended to two-dimensional (2D) facial expression analysis with 2D WP quadtree structures, and further a high-quality audio–visual bimodal emotion recognition system is desirable.
Starting Page	341
Ending Page	348
Page Count	8
ISSN	17519675
Volume Number	9
e-ISSN	17519683
Issue Number	Issue 4, Jun (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/9/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2013.0446
Journal	IET Signal Processing
Publisher Date	2015-05-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	2D Facial Expression Analysis 2D WP Quadtree Structures Adaptive Filter Adaptive Wavelet Packet Filter-bank-based Acoustic Feature Extraction Automatic SER Automatic Speech Emotion Recognition Channel Bank Filter Classification Task Combinatorial Mathematics Conventional MFCC Feature Discriminative Band WP Power Coefficient Emotion Recognition Feature Extraction Filtering Method in Signal Processing High-quality Audio-visual Bimodal Emotion Recognition System Quadtrees Speech Processing Technique Speech Recognition Speech Recognition And Synthesis Tree Pruning Problem Tree-pruning Criteria Two-dimensional Facial Expression Analysis WP-based Acoustic Feature Extraction Approach
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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