Convolution Reverb

The Convolution Reverb engine in the Editor works by multiplying two audio signals in the frequency domain (in a sort of moving average). A reverb effect is obtained when an 'impulse' file is convolved with the original wave file. Reverb impulse files are created by recording short, sharp sounds in real spaces or through a reverb/effects unit. The recorded 'reverberance' is an acoustic fingerprint of the real space. This technique is equivalent to sampling an acoustic instrument and allows us to 'borrow' impulses from very expensive hardware or real spaces that we would never have the chance to record in. Naturally, the internet is brimming with free impulses for your downloading pleasure (see 'Impulse Resources' below).

A real-time alternative is Fruity Convolver.

NOTE: While called the Convolution Reverb, any audio file can serve as a source for the impulse making this a general convolution tool. As always, experimentation will reward you with unique and interesting sounds.

To Open the Convolution Dialog

To open the dialog you can either Left-click on the Convolution Reverb button , press Ctrl+R inside the Editor, or use the Tools > Spectral > Convolution Reverb option.

Once an impulse is loaded you can perform any of Edison's editing functions in the spectral preview window. Right-click on the spectral preview to open the editing options



This section displays a spectral view of the impulse function. The vertical axis represents frequency 0 Hz (bottom) to 20 kHz (top) and the horizontal axis represents time. You can zoom and scroll through this display by Left-clicking in the scroll bar above the display (as shown by the double arrow cursor in the screenshot above).

Impulse Resources

Edison comes with many impulses, however the addictive nature of these files will mean that you will soon be looking for more. Below are several links to get you started. To load a new impulse from outside FL Studio, Left-click on the 'Impulse:' tab above the spectral display to open the standard 'Load File' dialog and browse to the location of the new impulses.

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