overmodulation


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overmodulation

[¦ō·vər‚mäj·ə′lā·shən]
(communications)
Amplitude modulation greater than 100%, causing distortion because the carrier voltage is reduced to zero during portions of each cycle.
References in periodicals archive ?
Goodman (39) noted that dissociative symptoms in PTSD may be a distinct aspect of the disorder but also a part of maladaptive posttraumatic process certain with emotional overmodulation mediated by midline prefrontal inhibition of limbic regions.
The topics include the overmodulation of three-phase voltage inverters, stochastic modulation strategies, PWM strategies for multi-level converters, and sliding mode current control for a synchronous motor.
615) and in terms of the neurobiology of the disorder there is an overmodulation of emotions by inhibition of the limbic regions related to emotions.
The boundary of the linear modulation and overmodulation is the hexagon.
To obtain the maximum possible fundamental voltage 2Vdc/[pi], the operation of the VSI must be extended into the overmodulation region.
Usually, in an AM most AM transmitters attempt to maintain between 90% to 95% modulation as a compromise between efficiency and the chance of drifting into overmodulation.
The transmitter enhances sound quality to increase audio clarity at louder levels and it eliminates the potential for clipping and overmodulation.
Combined with the wideband compander and other elements, the resulting system has a wide range of independent-gain/spectral-tilt combinations, and can therefore deal with the broadest range of signal/noise spectral combinations, without overload or overmodulation.