Taking control of your synthesiser
This lecture explains explains linear and logarithmic scales and how to control your projects from Bela’s browser-based GUI.
Table of contents
Lecture 4: Parameter control
What you’ll learn in this lecture
- Using the Bela GUI to control projects from the browser
- Mapping parameters
- Decibel scales for amplitude
- Converting MIDI note number to frequency
What you’ll make in this lecture
- Multiple oscillators with detuning
sine-slider: a complete example using the Bela slider GUI to control the frequency and amplitude of a sine oscillator. During the lecture, this example is converted to use a decibel scale for amplitude.
wavetable-slider: an example like
sine-slider but with a sawtooth wavetable oscillator. During the lecture, several improvements are made to this example including two detuned oscillators and controlling pitch in semitones rather than Hertz.
Running the examples in this course assumes that you have a Bela Starter Kit or Bela Mini Starter Kit.
This lecture does not require any other electronic hardware. However, other lectures will make use of sensors and other components. See Lecture 0 for a list of recommended parts.