What's New

• New look and feel
• Animated 3D background
• Updated video player engine
• New menu with section names
• Improved support across all platforms

App Description

Learn all about Filters from synthesist Marc Doty and support the educational activities of the Bob Moog Foundation all at the same time...

If Oscillators generate sound, then do Filters degenerate sound? Find out in this third course in the 6-part series on the Foundation of Synthesis that is all about Filters and Subtractive Synthesis. Bob Moog Foundation lead educator, Marc Doty, introduces you to the basic concepts of sound filtration. You’ll learn about cut-off frequencies, resonance and see every resulting waveform displayed on an Oscilloscope.

Filters are some of the most important devices in the synthesists tool box. They give sounds their unique characteristics. They allow the synthesist to sculpt the sound to reveal the hidden sonic qualities deep inside. Learn all about the different kinds of filters and how they are actualized by the designers of great hardware synths. Learn how these filter designs are, in many respects, what makes one synthesizer sound uniquely different from another!

Throughout this series Marc demonstrates the science of sound with informative animations and hands-on demonstrations of his collection of classic synths from many different designers! It’s great to see how these fantastic instruments deploy their sonic technologies.

iPhone Screenshots

(click to enlarge)

Synths Course - The Filter screenshot 1 Synths Course - The Filter screenshot 2 Synths Course - The Filter screenshot 3 Synths Course - The Filter screenshot 4 Synths Course - The Filter screenshot 5

App Changes

  • June 09, 2014 Initial release
  • September 13, 2015 New version 2.0.2
  • November 06, 2016 Price decrease: $19.99 -> $6.99
  • October 27, 2020 New version 7.1