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Digital Modulation: Amplitude and Frequency | Radio ...
https://www.allaboutcircuits.com/textbook/radio-frequency-analysis-design/radio-frequency-modulation/digital-modulation-amplitude-and-frequency/#:~:text=Digital%20amplitude%20modulation%20involves%20varying%20the%20amplitude%20of,varied%20in%20discrete%20sections%20according%20to%20binary%20data.
Amplitude - Hack Audio
https://www.hackaudio.com/digital-signal-processing/amplitude/
Digital Signal Processing Amplitude One of the most common ways an audio signal can be processed is by changing its amplitude. Amplitude conceptually represents the strength of a signal. It is the force sound exerts on an environment. It is …
Audio Signals, Sound, Vibration, Amplitude, Frequency ...
https://www.hackaudio.com/computer-programming/audio-basics/audio-signals/
There are several important characteristics of these vibrations. The rate at which these vibrations occur is called a signal’s frequency. The strength at which these vibrations occur is called a signal’s amplitude. These concepts will be explored in much greater detail in subsequent posts. Audio (as a term) is more general than sound.
Digital Audio - University of California, Irvine
https://music.arts.uci.edu/dobrian/digitalaudio.htm
If we consider the maximum possible amplitude as a reference with a numerical value of 1, then a sound with amplitude 0.5 has 1/2the amplitude (equal to 10 to the -0.3 power) so its level is 20 log10(0.5/1) = 20 (-0.3) = -6 dB Each halving of amplitude is a difference of about -6 dB; each doubling of amplitude is an increase of about 6 dB.
Digital Modulation: Amplitude and Frequency | Radio ...
https://www.allaboutcircuits.com/textbook/radio-frequency-analysis-design/radio-frequency-modulation/digital-modulation-amplitude-and-frequency/
Digital amplitude modulation involves varying the amplitude of a carrier wave in discrete sections according to binary data. The most straightforward approach to digital amplitude modulation is on-off keying. With digital frequency modulation, the frequency of a carrier or a baseband signal is varied in discrete sections according to binary data.
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