Results 221 to 230 of about 221,369 (265)

Efficient computation and encoding of the multipulse excitation for LPC

ICASSP '84. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
This paper discusses the analysis techniques used to derive the excitation waveform for multipulse coding of speech. A computationally efficient formulation is derived for both covariance and correlation type analyses. These methods differ in the way block edges are treated.
Michael G. Berouti, H. Garten, Peter Kabal, Paul Mermelstein   +3 more
openaire   +1 more source

Efficient Event-Driven Simulation of Excitable Hybrid Automata

2006 International Conference of the IEEE Engineering in Medicine and Biology Society, 2006
We present an efficient, event-driven simulation framework for large-scale networks of excitable hybrid automata (EHA), a particular kind of hybrid automata that we use to model excitable cells. A key aspect of EHA is that they possess protected modes of operation in which they are non-responsive to external inputs.
Mike R. True, Emilia Entcheva, Scott A. Smolka, Pei Ye, Radu Grosu   +4 more
openaire   +2 more sources

Efficiency of excitation of piezoceramic transducers at antiresonance frequency

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2002
The efficiency of piezoceramic transducers excited at both the resonance and antiresonance frequency was investigated. Losses in piezoceramics are phenomenologically considered to have three coupled mechanisms: dielectric, mechanical, and piezoelectric losses.
openaire   +2 more sources

Increasing the excitation efficiency of a rod laser

Journal of Physics E: Scientific Instruments, 1969
An effective technique is described for high-power pulse excitation of any practical length of a cylindrical laser medium.
W A R Macfarlane, J L Hughes, A Winokuroff   +2 more
openaire   +1 more source

Efficient E-beam excitation of XeCl

IEEE Journal of Quantum Electronics, 1979
Efficient laser output at 308 nm has been obtained from XeCl in an Ne/Xe/HCl mixture at a pressure of 4 atm by e -beam excitation and by e -beam controlled discharge pumping. Maximum energy extraction is 7 J/1 for e -beam excitation and 9 J/1 for the e -beam controlled discharge. Efficiencies based on total energy deposited in the gas are approximately
D. Rothe, J. West, M. Bhaumik
openaire   +1 more source

Efficiencies of Emission Excitation and Electron Density Formation in Auroras

Bulletin of the Russian Academy of Sciences: Physics, 2023
It is shown that the efficiencies of excitation of optical emissions λ = 391.4, 557.7, and 630.0 nm and the efficiency of formation of the total electron density weakly depend on the shape of the energy spectrum of precipitating electrons and are mainly determined by the values of the average energy of the electron flux.
V. E. Ivanov, Zh. V. Dashkevich, O. I. Yagodkina   +2 more
openaire   +1 more source

Efficient Rydberg Excitation of He with STIRAP*

Frontiers in Optics, 2006
The ~100% efficiency of STIRAP is used to produce Rydberg He atoms in a slightly supersonic beam. We focus the atoms with a hexapole electrostatic lens and calibrate the Rabi frequency with the Autler-Townes effect.
S-H. Lee, A. Vernaleken, K. Choi, J. Kaufman, O. Kritsun, H. Metcalf   +5 more
openaire   +1 more source

A method of high efficiency ultrasonic excitation

2009 9th International Conference on Electronic Measurement & Instruments, 2009
The design of ultrasonic excitation pulse source is very important in health monitoring of structures. Traditional ultrasonic excitation pulse source generates high voltage by power amplification units, and it increases the volume of ultrasonic test instruments.
Zhixue Shao, Lihua Shi, Haitao Zhang, Qin Yin   +3 more
openaire   +1 more source

Plasmonic excitation for high-efficiency photovoltaics

SPIE Proceedings, 2009
Photovoltaic absorbers ought to be optically thick to allow almost total light absorption and photocarrier current collection. They are typically semiconductors with a thickness more than the optical absorption length. When the absorber layer thickness is reduced significantly, then the quality of the absorber material could considerably increase by
Bader H. Alhasson, M. Matin
openaire   +1 more source

Electron excitation efficiency of CO2 lasers

Journal of Applied Physics, 1973
Using a double-excitation-pulse technique, the measured relative excitation efficiency of a CO2 laser as a function of E/p was found to be in qualitative agreement with the theoretical calculation of Nighan for the ν3 mode.
D. R. Suhre, P. D. Coleman, T. A. DeTemple   +2 more
openaire   +1 more source