A Simple Audio Wobulator.
I was inspired to make this "Wobulator" after watching the BBC TV program "The Alchemists Of Sound" about their Radiophonic Workshop.
Their Wobulator was used for making Sci-fi special effect noises for programs like Dr Who.
Traditionally a Wobulator is just a sweep generator (Ramp waveform), used in conjunction with an Oscillator and Oscilloscope, for testing and measuring the frequency response of filters, amplifiers and transmission systems etc.
On the BBC program they implied it was an "Engineering" device used to test the acoustics of a studio. A vague and inaccurate description.
My simple wobulator is just a multi waveform LFO used to pitch modulate a sine oscillator. To adjust the width and range of the sweep I have added controls to set the Start and End pitch.
The Wobulator can be used to make many of the Sci-fi sound effects of the period including, Distress beacons, weapons, lab and spaceship type background sounds etc.
Although this is a very simple ensemble, I thought I would share it with you as I have found it quite interesting, and amusing, to play with. I hope some of you will too.