# besselfilterdigital

Applies a digital Bessel filter on the input signal.

## Syntax

besselfilterdigital(`c1.x`,
`c1.y`, `order`, `choice`,
`cutoff_frequency`)

## Arguments

- c1.x
- The x vector.
- c1.y
- The y vector (input signal).
- order
- The order of the Bessel filter (2 or 4).
- choice
- The choice of the Bessel filter. Options include:
- 1 - lowpass
- 2 - highpass

- cutoff_frequency
- The cutoff frequency f0 in Hz.

## Example

```
x = c1.x
y = besselfilterdigital(c1.x, c1.y, 2, 1, 0.01).
```

## Comments

Result: The function applies a two-pole low pass digital Bessel filter on the input
signal `c1.y` with a cutoff frequency of 0.01Hz.