 | dsp-0.1: Haskell Digital Signal Processing | Contents | Index |
| DSP.Filter.IIR.Transform |
|
Digital IIR filter transforms
Reference: R&G, pg 260; O&S, pg 434; P&M, pg 699
Notation follows O&S
| d_lp2lp :: Double -> Double -> ([Double], [Double]) -> ([Double], [Double]) |
| d_lp2hp :: Double -> Double -> ([Double], [Double]) -> ([Double], [Double]) |
| d_lp2bp :: Double -> Double -> Double -> ([Double], [Double]) -> ([Double], [Double]) |
| d_lp2bs :: Double -> Double -> Double -> ([Double], [Double]) -> ([Double], [Double]) |
| :: Double | theta_p |
| -> Double | omega_p |
| -> ([Double], [Double]) | (b,a) |
| -> ([Double], [Double]) | (b',a') |
| Lowpass to lowpass: z^-1 --> (z^-1 - a)/(1 - a*z^-1) | |
| :: Double | theta_p |
| -> Double | omega_p |
| -> ([Double], [Double]) | (b,a) |
| -> ([Double], [Double]) | (b',a') |
| Lowpass to Highpass: z^-1 --> -(z^-1 + a)/(1 + a*z^-1) | |
| :: Double | theta_p |
| -> Double | omega_p1 |
| -> Double | omega_p2 |
| -> ([Double], [Double]) | (b,a) |
| -> ([Double], [Double]) | (b',a') |
| Lowpass to Bandpass: z^-1 --> | |
| :: Double | theta_p |
| -> Double | omega_p1 |
| -> Double | omega_p2 |
| -> ([Double], [Double]) | (b,a) |
| -> ([Double], [Double]) | (b',a') |
| Lowpass to Bandstop: z^-1 --> | |