Enhanced Vibrato Analysis Using Parameter-Optimized Cubic Convolution

Hee-Suk PANG  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E86-A   No.11   pp.2887-2890
Publication Date: 2003/11/01
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Engineering Acoustics
parameter-optimized cubic convolution,  vibrato,  fundamental frequency,  

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Parameter-optimized cubic convolution is used to accurately analyze the pitch center, rate and extent of vibrato tones. We interpolate the time-tracing fundamental frequencies of vibrato tones using parametric cubic convolution, and analytically estimate the positions and values of the extrema, which are used to analyze the characteristics of the vibrato. The optimal values of α, the parameter of the interpolation kernel, are also shown as a function of the normalized vibrato rates.