Results 11 to 20 of about 3,858,255 (287)

Modulation techniques for data superposition on amplitude-modulated signals [PDF]

open access: yes, 1983
Double-sideband amplitude-modulation is widely used because of its simplicity in transmission and reception, but in a number of applications the inclusion of a data channel has become an additional requirement.
Al-Jalili, Yazan Othman Ahmad
core   +7 more sources

Optical parametric wideband frequency modulation

open access: yesAPL Photonics, 2022
Various types of photonic applications, such as sensing and communication, require the generation of wideband optical frequency-modulated (FM) signals.
Shota Ishimura   +3 more
doaj   +1 more source

Capacity Planning and Operation Strategy of New PV-Storage Power Station Based on Frequency Modulation Service

open access: yesZhongguo dianli, 2023
In order to take full advantages of the new PV-Storage power station participating in power grid multi-time scale frequency modulation while considering the operation economy.
Guoming QIAN   +4 more
doaj   +1 more source

Tuning of human modulation filters is carrier-frequency dependent [PDF]

open access: yes, 2013
Recent studies employing speech stimuli to investigate 'cocktail-party' listening have focused on entrainment of cortical activity to modulations at syllabic (5 Hz) and phonemic (20 Hz) rates.
Reiss Joshua D.   +11 more
core   +2 more sources

JLHS: A Joint Linear Frequency Modulation and Hyperbolic Frequency Modulation Approach for Speed Measurement

open access: yesIEEE Access, 2020
In the waveform design, the distance measurement and resolution are a pair of irreconcilable contradictions. Linear Frequency Modulation (LFM) can alleviate this contradiction.
Yuankun Peng   +7 more
doaj   +1 more source

Transmission Perspective on the Mechanism of Coarse and Fine Crackle Sounds

open access: yesArchives of Acoustics, 2021
The possibility of a normal distribution indicates that few particles are in the same phase during a breath and their reflections can be observed on the chest wall, then a few explosive waves with relatively large power occurr occasionally.
Bing-Yuh LU   +2 more
doaj   +1 more source

High-Frequency Modulation Spectroscopy with a THz Quantum-Cascade Laser [PDF]

open access: yes, 2013
A terahertz absorption spectrometer with a quantum-cascade laser (QCL) for high-resolution molecular spectroscopy is realized. The spectrometer is based on highfrequency (up to 50 MHz) modulation of the QCL frequency.
H.-W. Hubers   +11 more
core   +1 more source

Detection of frequency modulation at large modulation frequencies [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1978
Several studies have been made of the minimum frequency excursions Δf required for detection of frequency modulation, with modulation frequency fm. [E. Zwicker, Acustica, 2, 125–133 (1952) R. H. Kay and D. R. Matthews, J. Physiol. 225, 657–677 (1972)]. The graph of minimum Δf vs fm has a pronounced peak at large values of fm.
openaire   +1 more source

Modulation-frequency acts as a primary cue for auditory stream segregation [PDF]

open access: yes, 2013
In our surrounding acoustic world sounds are produced by different sources and interfere with each other before arriving to the ears. A key function of the auditory system is to provide consistent and robust descriptions of the coherent sound groupings ...
Alexandra Bendixen   +9 more
core   +1 more source

Suppression of Frequency Modulation to Amplitude Modulation Conversion with Modified Group Velocity Dispersion Compensation Device in the Front End of High-Power Lasers

open access: yesApplied Sciences, 2022
The group velocity dispersion (GVD) occurring in the front end of high-power lasers is one of the primary factors leading to the conversion of frequency modulation (FM) to amplitude modulation (AM).
Xinlei Qian   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy