A novel low-delay wideband speech coder, called Multiband CELP (MB-CELP), overcomes the major obstacles usually associated with two traditional CELP approaches to wideband speech coding namely fullband CELP and split-band CELP. The new MB-CELP coder employs a multi-band bank of o -line ltered excitation codebooks, fullband linear prediction synthesis, and minimization of the error between origi...

Based on Brockhaus magnetic measurement system, the properties of GT100 ultra-thin silicon steel under middle and high frequency sinusoidal excitation are measured. Preisach model, static hysteresis loss characteristics simulated accurately. In addition, an improved model was proposed. The formula eddy current according to skin effect principle, statistical parameter V0 abnormal adjusted by ite...

This article presents a readout integrated circuit (ROIC) for capacitive touch-screen panels (TSPs) employing an amplitude-modulated multiple-frequency excitation (AM-MFE) technique. To prevent charge overflow, which occurs periodically at the beat frequency of frequencies, ROIC modulates amplitude voltages mixing derived from frequencies. Thus, can sense signal without overflow and maximize si...

Fragmentation of the pentapeptide leucine enkephalin (YGGFL) is accomplished via higher-order resonances combined with simultaneous analysis of low-mass product ions. Two methods of achieving excitation are explored: (1) 0.5 ms resonant excitation at the omega and at Omega-omega secular frequencies of ion motion (where Omega is the radio-frequency (rf) drive frequency) in a manner similar to bo...

We demonstrate photothermally excited force modulation microscopy (PTE FMM) for mechanical property characterization across a broad frequency range with an atomic force microscope (AFM). Photothermal excitation allows for an AFM cantilever driving force that varies smoothly as a function of drive frequency, thus avoiding the problem of spurious resonant vibrations that hinder piezoelectric exci...

this paper investigates the multi-band ofdm (mb-ofdm) based physical (phy) layer proposal for ieee 802.15.3a working group on short-range high data-rate ultra-wide-band (uwb) communications. an overview of the mb-ofdm phy layer architecture with its various parameters is presented and the optimal choice of critical parameters is discussed. next, we derive the theoretical un-coded bit error rate...

in this paper the problem of minimizing the total transmitting power subject to a fixedtotal bit rate in ofdm systems is considered. upper bounds on transmitting power and bit rate ofeach subcarrier can also be taken into account. in practice, the number of bits of each subcarriershould be integer and nonnegative. in this paper an analytical optimal solution is derived for thecase of assuming t...

In this paper, nonlinear implicit finite element analyses are used to explore parametric excitation of a bridge stay cable resulting from cyclic motion of the deck. “Parametric excitation” is excitation of a cable mode with deck motion at near twice the frequency of the excited mode. Third-mode parametric frequency response curves are consistently predicted when the finite element mesh is suffi...