D. J. MacLean

A Personal Voice Amplifier

D. J. MacLean, 1963 .

An Artificial Vibrato for Entertainment Use

F. K. Harvey, D. J. MacLean, 1962 .

Frequency Multiplex System for a 10‐Spectrum‐Channel Voice‐Excited Vocoder

D. J. MacLean, Roger M. Golden, A. J. Prestigiacomo, 1964 .

A Frequency Shifter for Improving Acoustic Feedback Stability

D. J. MacLean, Anthony J. Prestigiacomo, 1961 .