| DSP Blockset | |
Compute the discrete wavelet transform (DWT) of the input signal
Library
Description
| Note The DWT block is the same as the Dyadic Analysis Filter Bank block in the Multirate Filters library, but with different default settings. See the Dyadic Analysis Filter Bank reference for more information on how to use the block. |
The DWT block computes the discrete wavelet transform (DWT) of each column of a frame-based input. By default, the output is a sample-based vector or matrix with the same dimensions as the input. Each column of the output is the DWT of the corresponding input column.
You must install the Wavelet Toolbox for the block to automatically design wavelet-based filters to compute the DWT. Otherwise, you must specify your own lowpass and highpass FIR filters by setting the Filter parameter to User defined.
For detailed information about how to use this block, see the Dyadic Analysis Filter Bank block reference.
Examples
See Examples in the Dyadic Analysis Filter Bank reference page.
See Also
| Dyadic Analysis Filter Bank |
DSP Blockset |
Also see Transforms for a list of all the blocks in the Transforms library.
| | DSP Constant | Dyadic Analysis Filter Bank | |