User`s guide

Dyadic Synthesis Filter Bank

5-161

Symmetric Tree. The symmetric structure shown below (Tree structure set to

Symmetric) has 2

inputs, where n is the Number of levels parameter value.

The sample rate and bandwidth of the output are a factor of 2

higher than the

sample rate and bandwidth of the inputs, which are all equal.

Sample-Based Operation

An M-by-N sample-based matrix input is treated as M∗N independent

channels, and the block filters each channel independently over time. The

output is the same size as the input at each port, one output channel for each

input channel. As described earlier, for the asymmetric tree structure, each

input port has a different sample period.

in 1+,

in,

↑2

HP: highpass filter with f

≈ 1/2 Nyquist

LP: lowpass filter with

≈ 1/2 Nyquist

↑2: upsample by 2

↑2

. . .

Symmetric Fi

ter Ban

, n Leve

=(2

for all 2

inputs