I am trying to come up with a variable frequency whistle (pneumatic), part of a liquid atomizing test device. Does anyone know a starting point for such old technology? Probably dealing with non-fundamental tones, but rather first harmonic or ?
What do you need a whistle for when atomizing? Perhaps what you really are looking for is a way to atomize a liquid using ultrasonics? If so, there are ways to make this happen using an ultrasonic transducer. Check out