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Principal pitch of frequency-modulated tones with asymmetrical modulation waveform: A comparison of models
(Acoustical Society of America, 2014-03)
In this work, the overall perceived pitch (principal pitch) of pure tones modulated in frequency with an asymmetric waveform is studied. The dependence of the principal pitch on the degree of asymmetric modulation was ...
Simulations of the Frequency Modulated Atomic Force Microscope (FM-AFM) nonlinear control system
(2011)
The Frequency Modulated - Atomic Force Microscope (FM-AFM) is apowerful tool to perform surface investigation with true atomic resolution. The controlsystem of the FM-AFM must keep constant both the frequency and amplitude ...
Frequency Analysis of PWM Inverters With Dead-Time for Arbitrary Modulating Signals
(Institute Of Electrical And Electronics Engineers, 2014-06)
The effect of dead-time on the spectrum of pulsewidth modulated signals is analyzed in this paper. The study is valid for arbitrary, band-limited modulating signals, extending previous results in the literature. A simple ...
Decoupled PI Controllers Based on Pulse-Frequency Modulation for Current Sharing in Multi-Phase LLC Resonant ConvertersDecoupled PI Controllers Based on Pulse-Frequency Modulation for Current Sharing in Multi-Phase LLC Resonant Converters
(2021)
The LLC series resonant converter has emerged as a solution to applications requiring power conversion with isolation, reduced volume and high efficiency, such as PV systems and EV chargers. However, the LLC resonant ...
Omega-k Algorithm Implementation for Linear Frequency Modulated-Continous Wave SAR Signal Processing
(Universidad Nacional Tecnológica de Lima Sur, 2020)
The Omega-k algorithm is used for SAR systems due to the precision on focus quality in SAR raw signal. However, it is little explored for specific SAR systems such as Linear Frequency Modulated Continuous Wave LFM-CW ...
PWM Method to Eliminate Power Sources in a Non-Redundant 27-Level Inverter for Machine Drive Applications
(IEEE, 2006)
A non-redundant, three-stage, 27-level inverter using "H" converters, is analysed for machine drive applications. The main advantage of this converter is the optimisation of levels with a minimum number of semiconductors. ...
A Cognitive Way to Access the Frequency Spectrum
(2013-07-05)
Cognitive radio (CR) is an emergent technology in wireless communication. It aims at improve considerably spectrum use by allowing dynamic spectrum access (DSA). The DSA can be performed in different ways, e.g. interweave ...
Modulation of frequency preference in heterogeneous populations of theta-resonant neurons
(Pergamon-Elsevier, 2020)
Neurons from several brain regions resonate in the theta frequency range (4-12 Hz), displaying a higher voltage response to oscillatory currents at a preferred 'resonant' frequency (f(R)). Subthreshold resonance could ...
Phase-Locked loops lock-in range in Frequency Modulated-Atomic Force Microscope nonlinear control system
(Elsevier B.V., 2012-07-01)
Since the mid 1980s the Atomic Force Microscope is one the most powerful tools to perform surface investigation, and since 1995 Non-Contact AFM achieved true atomic resolution. The Frequency-Modulated Atomic Force Microscope ...
Phase-Locked loops lock-in range in Frequency Modulated-Atomic Force Microscope nonlinear control system
(Elsevier B.V., 2012-07-01)
Since the mid 1980s the Atomic Force Microscope is one the most powerful tools to perform surface investigation, and since 1995 Non-Contact AFM achieved true atomic resolution. The Frequency-Modulated Atomic Force Microscope ...