WaveWarp 2.0 Component
      
Multirate:
Functional Description
Reduces the sample rate of the input by an integer factor, M, by retaining only
every Mth sample. The output sample rate is a factor of M lower than the
input sample rate.
Separate components are provided for 2, 3, 4, and M (flexible) downsampling
factors.
IMPORTANT: This is the simplest form of downsampling and has no protection
against aliasing. It should not be used if the input signal has spectral
content above Fs/2M, where Fs is the input sample rate.
In such cases, the downsampler should be preceded by a low-pass filter which
attenuates all input signals above Fs/2M
(refer to the
Digital Filters
category of the Component Library for the available range of low-pass filters).
Alternatively, a downsampler with a built-in anti-aliasing filter can
be used in place of the simple downsampler (refer to the
Multirate
category of the Component Library for the available range of downsamplers).
Algorithm
See
[CrRa]
and
[StNg]
for a detailed treatment
of multirate signal processing.
For a specific discussion
on downsampling by an integer factor, see
section 2.3.2 of
[CrRa]
and chapters 1 & 3 of
[StNg].
Signal Implementations
| Audio signals | Control signals | Description |
|---|
| Single input mono single output mono | n/a | Converts the sample rate of the mono signal |
| Single input stereo single output stereo | n/a | Converts the sample rate of the stereo signal |
Related components:
Example DrawingBoards illustrating usage:
|
