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How Does A Music Synthesizer Work?

A music synthesizer makes sounds by using anSynthesizers are able to only mimic the
electrical circuit as an oscillator to createsounds of non-synthetic instruments, but also
and vary the frequency of sounds in order toto create sounds that absolutely cannot be
produce different pitches. As long as theplayed by anything but a music synthesizer.
pitch is within the range of frequency thatThat is because a music synthesizer is
can be heard by a human ear, it's known as awell-suited to delicate manipulations of its
"musical pitch" (so a dog whistle wouldn'toscillators. Nevertheless, it's a lot easier
count) as a musical pitch. You can use afor a synthesizer to create entirely new
keyboard to vary these pitches at discretesounds than to mimic the sounds of acoustic
intervals that correspond to the notes on theinstruments because the waveforms of acoustic
musical scale. If you put several oscillatorsinstruments are so complex. Interestingly,
together, you can combine several pitches toonce complex sound that synthesizers so far
create  a  "chord".have been very bad at reproducing is the
human voice (although improvements are being
OK, we've got pitch down (at least in a verymade  in  this  technology).
simple sense). How do you vary the tone of a
particular pitch? That is done by playing aThe entire electronic music scene would be
given pitch with waveforms of differentvirtually impossible without the use of
shapes (common waveforms include sine,synthesizers (no doubt some wish it were).
square, sawtooth, and triangle waveforms).Nevertheless, the number of sounds that a
Since the harmonic structure of thesemusician has to work with has been
waveforms differ, our ears interpret them asexponentially increasing in recent decades,
different tones. The sound you will hear canand we have only scratched the surface of the
also be modified by voltage-controlledcreative possibilities. Imagine the
amplifiers (VCA) and voltage-controlledconsequences if a machine was invented that
filters  (VCF).could generate 100,000 hitherto unknown
colors?



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