Practical approaches to speech coding
Practical approaches to speech coding
Discrete Time Processing of Speech Signals
Discrete Time Processing of Speech Signals
A 2.4 kbit/s MELP coder candidate for the new U.S. Federal Standard
ICASSP '96 Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 01
Linear classifier with reject option for the detection of vocal fold paralysis and vocal fold edema
EURASIP Journal on Advances in Signal Processing - Special issue on analysis and signal processing of oesophageal and pathological voices
Distortion of voicing and vocal tract parameters after codecs
CSECS'09 Proceedings of the 8th WSEAS International Conference on Circuits, systems, electronics, control & signal processing
Detection of vocal fold paralysis and edema using linear discriminant classifiers
SETN'06 Proceedings of the 4th Helenic conference on Advances in Artificial Intelligence
Nonlinear dynamic analysis of pathological voices
ICIC'13 Proceedings of the 9th international conference on Intelligent Computing Theories and Technology
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We examined the impact of standard speech coders currently used in modern communication systems, on the quality of speech from persons with common speech and voice disorders. Four standardized coders, viz. G. 728 LD-CELP, GSM 6.10 RPE-LTP, FS1016 CELP, FS1015 LPC and the recently proposed US Federal Standard 2400 bps MELP were evaluated with speech samples collected from 30 disordered talkers. Objective speech quality measures, including the auditory distance parameter based on the measuring normalizing blocks technique, and the perceptual speech quality measure, and subjective impressions of speech coder performance were used to assess the interaction between speech coder and speech disorder. Objective speech quality measures revealed that the performance of the LD-CELP and GSM RPE-LTP coders was not measurably influenced by the type of input speech, and that MELP, FS1015 LPC and to a certain extent FS1016 CELP exhibited degraded performance with speech samples from disordered talkers. Results from perceptual experiments were in contrast with the objective measures of speech quality; ratings of speech coder performance indicated that the listeners are less sensitive to coder-induced distortions with abnormal speech samples.