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searching for Modulation index 22 found (32 total)

Frequency modulation (3,614 words) [view diff] exact match in snippet view article find links to article

modulation in the frequency domain. As in other modulation systems, the modulation index indicates by how much the modulated variable varies around its unmodulated

Zero reference pulse (395 words) [view diff] exact match in snippet view article find links to article

professional television receiver imitating no radio frequency case for modulation index measurements in analogue TV transmitters. The composite monochrome

Amplitude modulation (4,576 words) [view diff] exact match in snippet view article find links to article

f_{c}t\right)\end{aligned}}} In this simple case m is identical to the modulation index, discussed below. With m = 0.5 the amplitude modulated signal y(t)

FM-UWB (200 words) [view diff] exact match in snippet view article find links to article

is a modulation scheme using double FM: low-modulation index digital FSK followed by high-modulation index analog FM to create a constant envelope UWB

VHF omnidirectional range (6,329 words) [view diff] exact match in snippet view article find links to article

ident i(t) on 1 off 0 Mi A1 modulation index 0.07 Fi A1 subcarrier frequency 1020 Hz voice a(t) −1 +1 Ma A3 modulation index 0.30 navigation Fn A0 tone

RBU (radio station) (589 words) [view diff] exact match in snippet view article

carrier +10 ms 80 ms Carrier PM modulated with 100 Hz or 312.5 Hz tone, modulation index 0.698 +90 ms 5 ms Unmodulated carrier +95 ms 5 ms Carrier off

White clipper (629 words) [view diff] exact match in snippet view article find links to article

transmission, the baseband signal modulates the amplitude of the carrier. The modulation index is negative, so higher video level yields lower carrier (RF) level

Frequency modulation synthesis (3,048 words) [view diff] exact match in snippet view article find links to article

modulator, β = B / ω m {\displaystyle \beta =B/\omega _{m}\,} is frequency modulation index, and amplitudes J n ( β ) {\displaystyle J_{n}(\beta )\,} is n {\displaystyle

Sideband (1,261 words) [view diff] exact match in snippet view article find links to article

also generates sidebands, the bandwidth consumed depending on the modulation index - often requiring significantly more bandwidth than DSB. Bessel functions

Distortion synthesis (474 words) [view diff] exact match in snippet view article find links to article

with another signal. The distortion can be controlled by means of a modulation index. The method known as phase distortion synthesis is similar to FM. Waveshaping

Continuous-wave radar (3,814 words) [view diff] exact match in snippet view article find links to article

f Δ f m {\displaystyle \mathrm {B} ={\frac {f_{\Delta }}{f_{m}}}} (modulation index) A time delay is introduced in transit between the radar and the reflector

Signal-to-noise ratio (3,699 words) [view diff] exact match in snippet view article find links to article

where W is the bandwidth and k a {\displaystyle k_{a}} is modulation index Output signal-to-noise ratio (of AM receiver) is given by ( S N R )

John Bertrand Johnson (825 words) [view diff] exact match in snippet view article find links to article

the U.S. patent office in 1949, Johnson reported "...although the modulation index of 11 per cent is not great,...the useful output power is substantial

Unified S-band (3,383 words) [view diff] exact match in snippet view article find links to article

efficient than RF amplifiers that must maintain linearity. The PM modulation index is small, so the signal resembled double sideband amplitude modulation

High-Efficiency Advanced Audio Coding (2,862 words) [view diff] case mismatch in snippet view article find links to article

are now deprecated and replaced with StreamS Encoders from StreamS/Modulation Index with many more features, including support xHE-AAC/Unified Speech and

Active SETI (3,935 words) [view diff] exact match in snippet view article find links to article

supplementary information. Additionally, the message had a very small modulation index overall, a condition not viewed as being optimal for interstellar communication

Radar (11,751 words) [view diff] exact match in snippet view article find links to article

from the returned signal and a portion of the transmitted signal. The modulation index riding on the receive signal is proportional to the time delay between

HTTP Live Streaming (2,715 words) [view diff] case mismatch in snippet view article find links to article

ISO MP4 Displays Synchronous Realtime Metadata and Graphics StreamS/Modulation Index LLC VLC media player (media player) Windows, macOS, Linux, Android

Effects of sleep deprivation on cognitive performance (6,015 words) [view diff] exact match in snippet view article find links to article

area (PPA). However, sleep deprivation does not affect the attention modulation index of the PPA. With this information, researchers have concluded that

Power electronics (7,951 words) [view diff] exact match in snippet view article find links to article

case is dubbed sinusoidal pulse-width modulation (SPWM).For this, the modulation index, or amplitude-modulation ratio, is defined as ma = vc/v∆ . The normalized

Automatic identification system (9,512 words) [view diff] exact match in snippet view article find links to article

GMSK coded data should frequency modulate the VHF transmitter. The modulation index should be 0.5. The transmission bit rate is 9600 bit/s Ordinary VHF

Tunable diode laser absorption spectroscopy (3,035 words) [view diff] exact match in snippet view article find links to article

the light is modulated at a much higher frequency but with a lower modulation index. As a result, a pair of sidebands separated from the carrier by the