functionwavDMeyer
Discrete Meyer wavelet filters
Information
This function returns the filter bank of discrete Meyer wavelet, which is an approximation of continuous Meyer wavelet. The filters with the length of 102 points usually provide sufficient accuracy. However, such long filters might cause long calculation time. Therefore, this function provides the possibility to return shorter filters. The trade-off is lower accuracy. Please note that some lengths will cause significantly large errors. The default length is 22.
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | points | 22 | Filter length (<= 102). The complete length is used if this variable is <= 0 |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Real[:] | F | Scaling filter | |
| Real[:] | lod | High pass filter for decomposition | |
| Real[:] | hid | Low pass filter for decomposition | |
| Real[:] | lor | High pass filter for reconstruction | |
| Real[:] | hir | Low pass filter for reconstruction |