Accurate measurement of formant frequencies is important in many studies of speech production and perception. The mapping of formant frequencies from cepstra coefficients by Broad and Clermont (1989) is an important evolution in formant estimation techniques from previous studies. This method also holds significant potential in estimating formant frequencies of sung vowels due to its improved r...

This paper proposes and implements the concept of wireless DC motor drives, which can achieve the abilities of selective driving and controllable speed. Due to different resonant frequencies of the multiple energy receivers of the associated DC motor drives, the transmitter can be purposely tuned to the specified resonant frequency which matches with the specified receiver, hence driving the sp...

Two methods for estimating the mechanical parameters of a rotating drive system that can be treated as a resonant 3-inertia system, are proposed. The accuracy of the estimation results is sufficient in order to design a state controller, which damps both resonances actively. Synopsis The mechanics of rotating drive systems normally consist of several inertias, which are joined together by elast...

Most demonstrations in silicon photonics are done with single devices that are targeted for use in future systems. One of the costs of operating multiple devices concurrently on a chip in a system application is the power needed to properly space resonant device frequencies on a system's frequency grid. We asses this power requirement by quantifying the source and impact of process induced reso...

Resonant electromagnetic actuators have been broadly used as vibration motors for mobile devices given their ability of generating relatively fast, strong, and controllable vibration force at a given resonant frequency. Mechanism of the actuators that is based on mechanical resonance, however, limits their use to a situation where their resonant frequencies are known and unshifted. In reality, ...

Time-dependent Hartree-Fock simulations for a linear triatomic molecular monocation (CO2) interacting with a 5 fs, 800 nm, strong field laser pulse were performed to explore the excitation mechanisms in a molecular cation. Fourier analysis of the time-dependent residual dipole moment reveal a nonmonotonic behavior in the amplitude of the 5.18 eV feature in the excitation spectra of the molecula...