Learn Synthesis with Pure Data S01E09 - Amplitude Modulation, Tremolo, and Ring Modulation
Amplitude modulation can simply be heard as a rising and falling of amplitude, which is directly related to loudness in sound. This modulation is performed with an oscillator and one can apply the waveform shape that is desired. When the rate of modulation is faster than approximately 40 Hz, it is called ring modulation in that one can perceive other frequencies, called side bands, forming in the sound. When the rate of vibration is slow enough to perceive the individual fluctuations, it is called tremolo. In this video we learn about amplitude modulation and apply it to our synthesizer that we are building in Pure Data.
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