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Sergio Bustos
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Synthesis Vol. 1

An introduction to sound synthesis, written for musicians.

How synthesizers actually work — oscillators, filters, envelopes and modulation — explained by a player, in plain language.

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English edition · PDF · 5.4 MB

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Overhead view of Sergio Bustos's rig — Nord Stage 4, synthesizers and controllers

Most synthesis writing is either too shallow to be useful or too academic to finish. This is the explanation I wish I'd had: what each part of a synth does, why it matters musically, and how to hear the difference. No prior electronics knowledge needed. Available in English and Spanish.

What you'll get

  • Understand what every knob on a synth is actually doing
  • Build sounds on purpose instead of scrolling through presets
  • Learn the vocabulary that makes every other synth tutorial make sense
  • Read it in English or Spanish

What's included

  • 57 pages in PDF, organised into two modules
  • What sound actually is: waves, frequency, amplitude, timbre and harmonics — and how it is represented digitally
  • Psychoacoustics: the Fletcher-Munson curves, masking, and why your ears mislead you
  • The building blocks of every synthesizer: oscillators, filters, amplifiers, envelopes and LFOs, and how signal flows between them
  • Waveforms and their character — sine, square, triangle, sawtooth and pulse — with the harmonic content behind each one
  • The filter in depth: low-pass, high-pass, band-pass and notch, slope, resonance and self-oscillation
  • The ADSR envelope and the LFO: how a sound gets its dynamics and its movement
  • A hands-on exercise in every chapter, to work through on your own synth

Who it's for

  • Keyboard players who want to move past factory presets
  • Producers who own synths but don't fully understand them
  • Anyone starting out with sound design

Questions

Do I need to know electronics or maths?
No. It's written for musicians. If you can play, you can follow it.
What languages is it in?
English and Spanish. You choose your edition when you download it.
Is it really free?
Yes. Enter your email and I'll send it. Volume 2 goes deeper and is paid.

Synthesis Vol. 1

An introduction to sound synthesis, written for musicians.

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