Stereo Equaliser Based On Approximate Brick Wall Filtering

What it does

Stereo Equaliser based on approximate brick-wall filtering

Illustrates the use of the Brick-wall 8-band Equaliser block for performing stereo equalisation over 8 octave frequency bands. The block is implemented by approximate brick-wall filtering in the frequency domain (i.e. by directly weighting the FFT data by the chosen gain values across the frequency range). This simple technique is highly efficient but introduces spectral distortion and artefacts. However, for many musical purposes, the distortion is not noticable... or may even be useful when creating special effects!

Experiment with all settings to explore the behaviour of this versatille component. Note that you have full independent control over the left and right channel equalisation. For example, the default settings in this DrawingBoard are different for the left and right channels.

Note: if you need to perform accurate equalisation without adding spectral distortion, you can build elaborate equalisers from WaveWarp's wide range of Digital Filters and Multi-rate components.

Effects used

8-Band Brick-Wall EQ

3 blocks 2 connections

In WaveWarp, 1998

How the original documented it

Stereo Equaliser based on approximate brick-wall filtering Illustrates the use of the Brick-wall 8-band Equaliser block for performing stereo equalisation over 8 octave frequency bands. The block is implemented by approximate brick-wall filtering in the frequency domain (i.e. by directly weighting the FFT data by the chosen gain values across the frequency range). This simple technique is highly efficient but introduces spectral distortion and artefacts. However, for many musical purposes, the distortion is not noticable... or may even be useful when creating special effects! Experiment with all settings to explore the behaviour of this versatille component. Note that you have full independent control over the left and right channel equalisation. For example, the default settings in this DrawingBoard are different for the left and right channels. Note: if you need to perform accurate equalisation without adding spectral distortion, you can build elaborate equalisers from WaveWarp's wide range of Digital Filters and Multi-rate components.

Components used (1998)

Input WAV fileOutput Stereo WAVE DriverBrick-wall 8-band Equaliser