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An interference-free representation of the instantaneous frequency of constituent harmonic components of periodic signals is introduced. The power weighted average instantaneous frequency of a band-pass filter yields this property when the effective passband of the filter covers up to two harmonic components and the two windows used in averaging are separated by a half pitch period. The proposed representation...
A voice transformation method that only relies on vowel information is proposed. The method is based on empirical cumulative distributions of perceptually relevant spectral distances, which are used to design mapping functions from distance to proximity. A set of operators are optimized in the design phase to implement on-the-fly compilation of executable transformations used in the transformation...
With the diffusion of multi-channel surround reproduction system for high-realistic sensation, the sound field reproduction system of room acoustics is significantly in demand. In order to simulate the room acoustics, the acoustic ray tracing based on geometric acoustics is one of effective methods. However, it cannot sufficiently simulate the wall materials, because it employs an unique scalar value...
A generalized framework of auditory morphing based on the speech analysis, modification and resynthesis system STRAIGHT is proposed that enables each morphing rate of representational aspects to be a function of time, including the temporal axis itself. Two types of algorithms were derived: an incremental algorithm for real-time manipulation of morphing rates and a batch processing algorithm for off-line...
A simple new method for estimating temporally stable power spectra is introduced to provide a unified basis for computing an interference-free spectrum, the fundamental frequency (F0), as well as aperiodicity estimation. F0 adaptive spectral smoothing and cepstral liftering based on consistent sampling theory are employed for interference-free spectral estimation. A perturbation spectrum, calculated...
The new tungsten (IV) compounds [W(η-C 5 H 4i Pr)Cl 3 (P)(CO)] (where P = H 2 PC 3 H 5 , H 2 PC 2 H 3 or PMe 3 ) have been prepared from the corresponding tungsten (V) compounds [W((η-C 5 H 4i Pr)Cl 4 (P)] by treatment with [Fe 2 (CO) 9 ] The crystal structures have been...
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