User`s guide

Filters
4-9
Note The Analog Filter Design block does not work with Simulink’s discrete
solver, which is enabled when the
discrete option is selected in the Solver
panel of the
Simulation Parameters dialog box. Select one of the continuous
solvers (e.g., ode4) instead.
Multirate Filters
Multirate filters are those which alter the sample rate of the input signal
during the filtering process. Such filters are useful in both rate conversion and
filter bank applications.
The Multirate Filters library provides a number of blocks for multirate
applications:
•Dyadic Analysis Filter Bank
•Dyadic Synthesis Filter Bank
•FIR Decimation
•FIR Interpolation
•FIR Rate Conversion
•Wavelet Analysis
•Wavelet Synthesis
The DSP Blockset additionally provides a number of demos that make use of
the multirate filter blocks:
•Denoising (
dspwdnois)
•Multistage Multirate Filtering Suite (
dspmrf_menu)
•Interpolation of a Sinusoidal Signal (
dspintrp)
•Sample Rate Conversion (
dspsrcnv)
•Sigma-Delta A/D Converter (
dspsdadc)
•Three-Channel Wavelet Transmultiplexer (
dspwvtrnsmx)
•Wavelet Perfect Reconstruction Filter Bank (
dspwpr1)
•Wavelet Reconstruction (
dspwlet)