Correlation of Pseudo Random Noise to Measure Time Delay as a Function of Frequency
Dennis Griffiths · Journal of the Audio Engineering Society · 1999
Numerous digital delays and loudspeaker processors have granted the user a higher level of precise control over the alignment of loudspeakers. This paper investigates an efficient measurement method using correlated pseudo random noise to accurately determine the acoustic center of a loudspeaker. It can be demonstrated the measurement process is robust and applicable in less than ideal environments.