Peter Nordquist, Associate Professor of Computer Science
Pete studies musical sounds. He sings in the SOU Chamber Choir and has extensive experience with music and things vocal. He has been the principal developer of a program that displays a visual representation of the intervallic relationship between an input sound and a user-chosen reference pitch. He, and others, developed a program that takes an audio signal as input and produces a visual representation of the spectrum of frequencies present in this signal. This frequency spectrum is also processed by an algorithm for detecting the fundamental frequency in the spectrum, commonly referred to by musicians as the pitch of the sound. This program also has the ability to compare the current fundamental frequency with a set of predetermined frequencies and output the frequency in the set that is closest to the input fundamental. In addition, it will output the difference between this closest frequency and the actual fundamental.