User`s guide

Time-Varying Direct-Form II Transpose Filter
5-435
•Vector
The vector has a length equal to the number of delay elements in each filter
channel,
max(m,n)-1, and specifies a unique initial condition for each delay
element in the filter channel. This vector of initial conditions is applied to
each filter channel.
•Matrix
The matrix specifies a unique initial condition for each delay element, and
can specify different initial conditions for each filter channel. The matrix
must have the same number of rows as the number of delay elements in the
filter,
max(m,n)-1, and must have one column per filter channel.
Filter Update Rate
In frame-based operation, the Filter update rate parameter determines how
frequently the block updates the filter coefficients (i.e., how often it checks the
Num and Den inputs). There are two available options:
•
One filter per sample time
The block updates the filter coefficients (from inputs Num and Den) for each
individual scalar sample in the frame-based input. This means that each
output sample could potentially be computed by a different filter (assuming
that
Num and Den inputs are updated frequently enough).
•
One filter per frame time
The block updates the filter coefficients (from inputs Num and Den) for each
new input frame, rather than at each sample in the frame. This means that
each output sample in a given frame is a result of an identical filtering
process.