modulation depth การใช้

• Reductions in the modulation depth are associated with loss of intelligibility.
• The change to greater modulation depth was part of a series of experiments to increase coverage without increasing transmitter power.
• The modulation depth " m " is a convenient experimental parameter when assessing the total harmonic distortion in the demodulated signal.
• The modulation depth of each 90 Hz and 150 Hz signal changes according to the deviation of the aircraft from the correct position for the aircraft to touchdown on the threshold.
• While clipping limiters are often used as a form of last-ditch protection against overmodulation, a properly designed vogad circuit actively controls the amount of gain to optimise the modulation depth in real time.
• A filter network is required so that the audio components of the signal don't appreciably influence gain; this prevents " modulation rise " which increases the effective modulation depth of the signal, distorting the sound.
• The difference between the two signal modulation depths is zero when the aircraft is on the correct glideslope on approach to the runway i . e . No difference ( zero DDM ), produces no deviation from the middle indication of the instrument's needle within the cockpit of the aircraft.
• In addition to increasing with average illumination intensity, the fusion frequency also increases with the extent of modulation ( the maximal relative decrease in light intensity presented ); for each frequency and average illumination, there is a characteristic modulation threshold, below which the flicker cannot be detected, and for each modulation depth and average illumination, there is a characteristic frequency threshold.
• :: The issue of displaying thin vertical lines is to do with the rate at which the display can go from dark to light along the scanline-and that's'bandwidth'- and'modulation depth'- which are generally rolled into one " resolution " figure in the spec sheets for the display-but the measurement of it is something of a black art and comparing two monitors on the basis of this number is a bit more subjective.
• :: For frequency modulation, phase modulation, and ordinary analog amplitude modulation ( of 100 % or less modulation depth ), the average power of the carrier wave remains constant so the power inflow to the building will always be at least 50 KW . For single-sideband modulation, there's "'no "'transmitted power when no one is talking so the average power of the carrier wave varies with the average volume of the modulating signal.