Perfect Pitch Tuner - Version 1.02 Quickly tune instruments or your singing voice. Perfect Pitch Tuner is the world's most powerful chromatic tuner. It is extremely easy to use. The tuner's advanced digital signal processing software has the ability to tune a wide range of instruments. The tuner software provides a digital display for high precision and easy reading. It displays a note's pitch (fundamental frequency) in Hertz. It displays a note's name in the chromatic scale (for example C#) and indicates as a percentage whether a note is slightly sharp or flat. A plot of the amplitude-versus-time waveform is plotted on a calibrated grid. Optionally, the note A above Middle C may be set at a frequency other than the default 440.000 Hertz. Also included, is a built-in tone generator which can play any note in a seven octave range. A sound card, a microphone, and speakers are required.