The optimized Tesla coil transmitter is a continuous wave oscillator with a break rate equaling the operating frequency.
In some instances pulse-width modulation (PWM) using a square wave oscillator can be added to create a "vibrating" sound.
The TR-808 improves on these designs, by using detuned square wave oscillators (for the cow bell and cymbal sounds) and analogue reverberation (for the handclap sound).
The recent existence of a terahertz radiating source in general are THz quantum cascade lasers, optically pumped THz lasers, backward wave oscillators (BWO) and frequency multiplied sources.
Self oscillation occurs when the resonance or Q factor of the cutoff frequency of the filter is set high enough that the internal feedback causes the filter circuitry to become a sine tone sine wave oscillator.
They had a supersonic wave oscillator ready, but Katsura sabotaged the machine before they could use it.
While Interpol distracts Titanosaurus with the supersonic wave oscillator, Godzilla is able to focus on attacking Mechagodzilla.
It consists of four square wave oscillators grouped into two sets.
Recently 3 original multiple wave oscillators were discovered once belonging to Dr. Boris Vassileff.
The cymbals and hi-hats were created by VCA-shaping and band-pass filtering a combination of white noise and four non-harmonically related square wave oscillators (generating a much more realistic sound than white noise alone).