ToneGen is an easy-to-use app that can be used as a sine wave generator, sound frequency or signal generator that can create an audio test tone, sweep, or noise waveform. Generate sine wave, square wave, triangular waveform, saw tooth waveform and impulse sound waves. White noise generator or pink noise generator. Sound generator supports frequencies from 1Hz to 22kHz. (subject to sound card output capabilities). Simultaneous tone generation of up to 16 tones at once. Mono or separate stereo operation for dual tones or beats. Log or linear sweep tone generation. Play generated tones or save tones as a wav file. Applications: Generate test tones for radio audio level alignment. Calibration and testing of sound equipment or speakers. Demonstration of audio principles to students. Create harmonics by generating multiple sound frequencies. Acoustics testing and equalization. White noise generator. Audio band signaling. Hearing tests (under medical supervision).