Detecting Determinism in Speech Phonemes
Format of Original
Institute of Electrical and Electronics Engineers
Proceedings of 2002 IEEE 10th Digital Signal Processing Workshop, and the 2nd Signal Processing Education Workshop
Original Item ID
This paper presents a discriminating approach to detecting the existence of underlying determinism in speech phonemes using the surrogate data method. The discrimination is made using a statistical measurement of neighboring trajectory directions. This approach is experimentally verified with both deterministic and stochastic time series and then applied to speech phonemes from the TIMIT database. The results show that vowels present some degree of determinism, while no evidence is observed showing that determinism exists with either voiced or unvoiced fricatives.