MQT — McAulay-Quatieri Transformer
Macintosh application for spectral transformations of sound (1993)
A Macintosh application for spectral transformations of sound based on the McAulay-Quatieri sinusoidal representation. MQT performs transformations on MQ analysis data created by the Lemur analysis/synthesis program. The McAulay-Quatieri sinusoidal representation extracts frequency spectra as amplitude peaks, providing a flexible and perceptually intuitive format for frequency domain transformations.
Transformations include cross synthesis, reharmonization, time-stretching, track index offset, harmonic ratio abstraction, and conversion to MIDI and Csound score formats.
Developed as the author’s Master of Arts thesis in Electro-Acoustic Music at Dartmouth College, 1993.
Thesis
Apel, T. (1993). Transformation of Audio Signals by use of the McAulay Quatieri Sinusoidal Model of Sound. Master of Arts thesis, Dartmouth College. PDF
Code
MQT – Archival source code (classic Macintosh C, 1993).