tailieunhanh - Báo cáo hóa học: " Disordered Speech Assessment Using Automatic Methods Based on Quantitative Measures"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Disordered Speech Assessment Using Automatic Methods Based on Quantitative Measures | EURASIP Journal on Applied Signal Processing 2005 9 1400-1409 2005 Hindawi Publishing Corporation Disordered Speech Assessment Using Automatic Methods Based on Quantitative Measures Lingyun Gu Computational NeuroEngineering Laboratory Department of Electrical Computer Engineering University of Florida Gainesville FL 32611-6200 USA Email lygu@ John G. Harris Computational NeuroEngineering Laboratory Department of Electrical Computer Engineering University of Florida Gainesville FL 32611-6200 USA Email harris@ Rahul Shrivastav Department of Communication Sciences Disorders University of Florida Gainesville FL 32611 USA Email rahul@ Christine Sapienza Department of Communication Sciences Disorders University of Florida Gainesville FL 32611 USA Email sapienza@ Received 2 November 2003 Revised 6 August 2004 Speech quality assessment methods are necessary for evaluating and documenting treatment outcomes of patients suffering from degraded speech due to Parkinson s disease stroke or other disease processes. Subjective methods of speech quality assessment are more accurate and more robust than objective methods but are time-consuming and costly. We propose a novel objective measure of speech quality assessment that builds on traditional speech processing techniques such as dynamic time warping DTW and the Itakura-Saito IS distortion measure. Initial results show that our objective measure correlates well with the more expensive subjective methods. Keywords and phrases objective speech quality measures subjective speech quality measures pathology anthropomorphic. 1. INTRODUCTION The accurate assessment of speech quality is a major research problem that has attracted attention in the field of speech communications for many years. The two major classes of methods employed in the assessment of speech quality are subjective and objective speech quality measures. Subjective quality measures are more accurate and robust since they .