نتایج جستجو برای: fm modulation
تعداد نتایج: 161403 فیلتر نتایج به سال:
Fibromyalgia (FM) is one of the most difficult chronic pain syndromes to treat, affecting 3% to 5% of the world population [1,2]. It is characterized by musculoskeletal pain and muscle tenderness, accompanied by depression, sleep disorders, fatigue [3], cognitive and mood disturbances, and decreased physical function [4], which leads to a decreased quality of life. Although FM is well studied, ...
The abilities of human subjects to identify direction (up vs. down) of frequency modulation (FM) of individual tone sweeps at various rates of FM are examined, in particular, how fast FM sweeps can be without impairing a subject’s ability to accurately identify them as upward or downward. This ability may be relevant to the auditory encoding of rapid formant transitions, important perceptual cu...
Amplitude-Modulation FrequencyModulation (AM-FM) decompositions represent images using spatially-varying sinusoidal waves and their spatially-varying amplitudes. The model uses different scales and bandpass filters to characterize the wide range of frequencies that may be present in an image. In the past few years, as the understanding of its theory advanced, AM-FM has been used in a series of ...
Using a novel light-intensity method, we quantify for the first time the magnitude and spatial variance in acoustic energy density along a microchannel during acoustophoretic focusing of particles with frequency-modulated ultrasound. We compare the distribution in energy density between single-frequency (SF) and frequency-modulation (FM) actuation along the microchannel. In addition, we analyze...
OBJECTIVE Autonomic dysfunction is an important mechanism that could explain many symptoms observed in fibromyalgia (FM). Exercise is an effective treatment, with benefits potentially mediated through changes in autonomic modulation. Strengthening is one of the less studied exercises in FM, and the acute and chronic effects of strengthening on the autonomic system remain unknown. The objective ...
| A simple, robust processing strategy, called the Fading Magnitude { Integrate, Sample and Dump (FM{ISD) processor, is proposed for use with Limiter{Discriminator detection of CPM signals in Rayleigh, fast fading channels. The FM{ISD processor is introduced as a simpli cation of an optimal estimator{correlator receiver. The performance is compared to a standard integrator processor and found t...
In the Jamaican mustached bat, Pteronotus parnellii parnellii, one of the subdivisions of the primary auditory cortex is disproportionately large and over-represents sound at approximately 61 kHz. This area, called the Doppler-shifted constant frequency (DSCF) processing area, consists of neurons extremely sharply tuned to a sound at approximately 61 kHz. We found that a focal activation of the...
ackground: A number of studies have provided evidence for genetic modulation of brain structure in unaffected family members (FM) of chizophrenia patients using conventional volumetric analysis. High-dimensional pattern classification methods have been reported to ave the capacity to determine subtle and spatially complex structural patterns that distinguish schizophrenia patients from healthy ...
Asymmetrical frequency modulation (AFM) as proposed by Palamin et al. (1988) offers greater flexibility in the shaping of the spectra of synthesized waveforms as compared to normal frequency-modulation (FM) synthesis. The feasibility of using AFM synthesis for the real-time generation of waveforms of musical instruments is demonstrated using a DSP56000 digital signal processor to implement the ...
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