overmodulation การใช้

• It basically should only be used to prevent overmodulation.
• Some other surviving tapes show a tendency toward overmodulation.
• V ref _ MAX is the maximum amplitude of V ref before non-linear overmodulation is reached.
• As well as preventing overmodulation, it boosts the level of quiet signals so that undermodulation is also avoided.
• On-air signal chains of radio stations commonly use hardware multiband compressors to increase apparent loudness without fear of overmodulation.
• He played with unusual force; on the old recordings he created a metal buzz that can be mistaken for overmodulation into the microphone.
• We shall insist that " M " 1 then overmodulation occurs and reconstruction of message signal from the transmitted signal would lead in loss of original signal.
• Although overmodulation is sometimes considered permissible, it should not occur in practice; a distorted waveform envelope will result in a distorted output signal of the receiving medium.
• For recording this prevents overmodulation on analogue systems which tends to corrupt adjacent tracks in helical scanning; while on digital systems the peak signal amplitude is an absolute numerical value and cannot be exceeded.
• Transmitters typically incorporate a limiter circuit to avoid overmodulation, and / or a compressor circuit ( especially for voice communications ) in order to still approach 100 % modulation for maximum intelligibility above the noise.
• 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.
• However, analog recording tape has a limited capacity to record high volume levels; if this critical level is exceeded, the signal is degraded by " overmodulation, " or " clipping " distortion.
• Increasing the modulating signal beyond that point, known as overmodulation, causes a standard AM modulator ( see below ) to fail, as the negative excursions of the wave envelope cannot become less than zero, resulting in distortion ( " clipping " ) of the received modulation.
• In 2003, " Rolling Stone " ranked " The Genius of Ray Charles " number 263 on their list of middle-of-the-road acts . " However, they cautioned listeners that the album was " abysmally recorded, with frequent overmodulation muddying its brasher moments ."