This Application (also known as signal generator, noise generator, or frequency generator) lets you create a tone of varying frequency & waveform on demand ranging from 0HZ to 22KHZ. Features - Multiple waveforms. - Test your hearing. - Test speakers and headphones for the high end (treble) and low end (bass) tones. - Use this app as an instrument tuner when playing or producing. - Output also via audio jack. - Smooth amplitude and frequency control. This Frequency Generator application suppo