BrickWall : Convolution brickwall lowpass/highpass/bandpass/bandstop filter — Cecilia 5.4.1 documentation

# BrickWall : Convolution brickwall lowpass/highpass/bandpass/bandstop filter

## Description

Convolution filter with a user-defined length sinc kernel. This kind of filters are very CPU expensive but can give quite good stopband attenuation.

## Sliders

> Cutoff Frequency :

>   Cutoff frequency, in Hz, of the filter.

> Bandwidth :

>   Bandwith, in Hz, of the filter. Used only by bandpass and pnadstop filters.

> Filter Order :

>   Number of points of the filter kernel. A longer kernel means a sharper attenuation (and a higher CPU cost). This value is only available at initialization time.

## Graph Only

> Overall Amplitude :

>   The amplitude curve applied on the total duration of the performance

## Popups & Toggles

> Filter Type :

>   Type of the filter (lowpass, highpass, bandpass, bandstop)

> Balance :

>   Compression mode. Off, balanced with a fixed signal or balanced with the input source.

> Polyphony Voices :

>   Number of voices played simultaneously (polyphony), only available at initialization time

> Polyphony Spread :

>   Pitch variation between voices (chorus), only available at initialization time