Title :
Theory of motional feedback
Author_Institution :
Wilhelmina Hospital, Amsterdam, Netherlands
Abstract :
In motional feedback the mechanical vibrations of the loudspeaker cone are the source of the feedback voltage. Feedback then improves the over-all response characteristic and reduces the total distortion. The theory of this method is presented here in a simplified, though enlightening, way. The treatment is based on an unorthodox theorem on impedance conversion by feedback.
Keywords :
Bridge circuits; Coils; Damping; Frequency; Length measurement; Loudspeakers; Magnetic heads; Negative feedback; Resonance; Voltage;
Journal_Title :
Audio, IRE Transactions on
DOI :
10.1109/TAU.1961.1166299
