FM Synthesis EXPLAINED For Audio Programming

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Hi, my name is Jan Wilczek. I am an audio programmer and a researcher. Welcome to WolfSound!

WolfSound's mission is to provide high-quality, informative, and entertaining videos, articles, and courses on how to process sound by exploring mathematics, applying algorithms, and creating code in various programming languages. Topics include sound synthesis, digital signal processing, programming languages for audio (C, C++, Python, Rust), and audio effects. I am also sharing tips on how to learn fast and effectively. Make sure to visit https://www.thewolfsound.com/.

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ABOUT THE VIDEO

Frequency modulation (FM) synthesis is an exciting topic: with a few simple operations, we can create complex sounds that can instantaneously change in timbre with a few simple coefficient changes.

How does it work? How to control it to produce musical notes? Why was it so popular in the 1980s? We will explore all that in this single video!

Entry track: Streets of Rage 2 Medley Cover by @CloseToGoodBand
   • Streets of Rage 2 Medley Cover  

Video edited by Vadzim Vezhnavets.
Background music by Karol Ruciński.

ABOUT ME

My name is Jan Wilczek. I am an audio programmer, a researcher in the field of music technology, and a musician. Through articles and videos from WolfSound, you will easily understand the main concepts of sound processing using software. My full story:    • How I Got Started With Audio Programming (...  

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TIME CODES

00:00 Introduction
00:55 History
01:46 Vibrato
03:27 Basic FM Synth
06:44 Simple FM Diagram
07:13 Simple FM Spectrum
08:00 Partials vs harmonics vs overtones
08:50 Timbre control of simple FM
11:31 What is the modulation Index?
14:00 Phase modulation and how it differs from frequency modulation
17:58 CELEBRITY CAMEO
18:18 Timbre of FM - When is FM spectrum harmonic?
21:31 Timbre of FM - What’s the fundamental frequency (the pitch) in FM?
22:44 Timbre of FM - How to eliminate every N_2-th harmonic?
23:57 Timbre of FM - How to control the brightness of FM spectra?
26:59 FM Efficiency
27:56 Timbre of FM - How to control the partials’ amplitudes? Bessel functions
31:16 Extensions of simple FM
34:13 Summary

#sound #synthesizer #programming