Member of the dsp class. Use members of the filter implementation subclass to filter signals.
| Function | Description |
| bilinear | Bilinear transform |
| conv | Convolution |
| conv2 | Two-dimensional convolution |
| deconv | Deconvolution |
| fftfilt | FIR filter based on FFT |
| filter | One-dimensional filter |
| filter2 | Two-dimensional filter |
| filtfilt | Zero-phase one-dimensional filter |
| filtic | Direct-form II filter |
| impinvar | Digital filter with impulse response of analog filter |
| latcfilt | Lattice filter |
| medfilt1 | One-dimensional median filter |
| sgolayfilt | Savitzky-Golay FIR filter |
| sosfilt | Second-order section filter |
| udecode | Integer inputs to floating-point outputs |
| uencode | Floating-point inputs to integer outputs |