Abstract for group Notator We intend to create a system that is designed to convert a human-produced musical symbol into musical notes and intervals that could be displayed on a computer screen, or conceivably in some sort of memory. The intent would be to receive an audio signal of a single voice or musical instrument. After converting the analog signal into a digital signal, we would perform a fast Fourier transform (FFT) on the signal to find its spectral elements, we would find which frequency has the highest amplitude above a certain threshold (this would presumably be F0, the fundamental frequency.) Every few milliseconds we would check the signal again for any change. A transition from silence to a note, note to note, or note to silence, would indicate the beginning or end of a note, or both. The FFT and note analysis would most likely take place within a C program that interacts with memory, the audio input, and the display through the OPB bus. The applicability of this design would be in some kind of portable device that would allow musicians to sing into it as they are going from place to place so that they can make a note of some tune that they have devised in their head so that they can transfer it to music paper or some other form of notation at a later time. Even as a nonportable device, there is plenty of value in being able to directly produce notes and musical intervals from an audio signal.