nvh Archive
Removing Phase Delay Using Phaseless Filtering
Posted on June 6, 2001 | No CommentsIn many instances we need to filter a signal to remove unwanted frequencies. If we use classical filters such as Butterworth, Chebyshev or even Bessel then a phase delay is...
Time Varying Overall Level
Posted on May 1, 2001 | No CommentsA common requirement in noise and vibration analysis is to find the overall level of a signal as a function of time. Now the overall level is a measure of...
Interpretation of the Articulation Index
Posted on April 11, 2001 | 1 CommentThe Articulation Index or AI gives a measure of the intelligibility of hearing speech in a given noise environment. The metric was originally developed in 1949 in order to give...
