- One approach to deriving the ``coupling filter'' is to determine a ``single mode'' loop filter,
*L*(*z*), whose magnitude response at the various modal frequencies is equal to the respective ``per sample'' attenuation rates. - The coupling filter can then be computed as

(5) *N*is the number of modes connected to the coupling filter.

©2004-2016 McGill University. All Rights Reserved. Maintained by Gary P. Scavone. |