Results 1 to 10 of about 160,254 (245)

Respiratory-Induced Amplitude Modulation of Forcecardiography Signals [PDF]

open access: yesBioengineering, 2022
Forcecardiography (FCG) is a novel technique that records the weak forces induced on the chest wall by cardio-respiratory activity, by using specific force sensors.
Jessica Centracchio   +3 more
doaj   +2 more sources

Tests of human auditory temporal resolution: preliminary investigation of ZEST parameters for amplitude modulation detection [PDF]

open access: yesFrontiers in Neuroscience, 2023
Auditory temporal resolution plays a critical role in the everyday experience of listening to complex acoustic patterns. Amplitude modulation detection thresholds are widely used to measure auditory temporal resolution.
Shuji Mori   +6 more
doaj   +2 more sources

Wind Farm Noise—Modulation of the Amplitude

open access: yesAcoustics, 2021
The operation of a wind turbine results in a series of pulses where there is a significant instantaneous increase in the amplitude of the pressure signal, dependent upon the wind speed at the turbine blades.
Steven Cooper
doaj   +1 more source

ANALYSIS THE INFLUENCE OF MODULATED AMPLITUDE ON COMMON MODE ERROR BASED ON GPS DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Time series analysis uses constant amplitude models to estimate seasonal changes, while the actual seasonal changes of station coordinates have varying degrees of modulation. The difference between the real modulation amplitude and the estimated constant
F. Wang   +4 more
doaj   +1 more source

Pulse Radar Imaging Method in an Anechoic Chamber Based on an Amplitude Modulation Design

open access: yesRemote Sensing, 2022
The application of a pulse radar in anechoic chamber imaging is a new way to obtain the electromagnetic characteristics of targets. However, the limited size of an anechoic chamber causes the coupling between the transmitted signal and echo so the target
Ailun Xie   +3 more
doaj   +1 more source

M-ary Amplitude Shift Keying Power and Information Synchronous Transmission Based on Phase-Shifted Full-Bridge

open access: yesApplied Sciences, 2022
This paper proposes an M-ary amplitude shift keying (MASK) power and information synchronous transmission system based on phase-shifted full-bridge (PSFB) for applications in wireless power transmission (WPT).
Xin Zhang   +5 more
doaj   +1 more source

The Application Research of Atmospheric Optical Communication in Joint Modulation Transmission System

open access: yesGuangtongxin yanjiu, 2021
Aiming at the demand of high spectrum efficiency and low bit error rate of Wireless Optical Communication (WOC) technology, a joint modulation method of Pulse Amplitude Modulation (PAM) and Pulse Position Modulation (PPM) is proposed.
Le-kun DENG   +3 more
doaj   +1 more source

The Effect of Thermal Modulation on Double Diffusive Convection in the Presence of Applied Magnetic Field and Internal Heat Source

open access: yesInternational Journal of Applied Mechanics and Engineering, 2021
The investigation of thermal modulation on double-diffusive stationary convection in the presence of an applied magnetic field and internal heating is carried out.
S.H. Manjula, P. Suresh, M.G. Rao
doaj   +1 more source

Corrected Long-Term Time-Average Sound Level of Amplitude-Modulated Wind Turbine Noise [PDF]

open access: yesArchives of Acoustics, 2023
Amplitude modulated noise from a single wind turbine is considered. The time-varying modulation depth D_m and the short time-average sound level L_Aeq,τ (with τ = 20 s) are measured at the reference distance d_*.
Rufin Makarewicz, Maciej Buszkiewicz
doaj   +1 more source

Study on Amplitude Modulation Principle of Chaotic System

open access: yesComplexity, 2020
Exploring the amplitude modulation phenomenon of chaotic signal has become a subject of great concern in recent years. This paper mainly concentrates on the preliminary study on amplitude modulation principle of a chaotic system.
Jian-Rong Du   +4 more
doaj   +1 more source

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