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Table Of Contents
678 EFFECTS MENU
Modulation/Special
Convolution (Offline)
This menu item is hidden by default. To display it again, activate it in the menu settings via
"File -> Program Preferences > Edit Keyboard Shortcuts and Menu (view page 488)".
Using the convolution function you can mix a sample/object with any other sample.
This means that the original sample will be filtered with the convolution sample: common
overtones will be amplified, anything else will be softened. FFT Analysis Filter offers a similar
method which filters a sample using a frequency sequence of another sample that has
been saved to the clipboard. Thereby however only the frequency responses of two
samples will be used. When mixed though the frequency response and the phase
response are linked - which leads to noticeably different results with long samples.
With the convolution algorithm you can create reverb, echo, filter effects, exotic morphing
effects and refined sonic fusions made up of different sounds. This function works along
the same principles as the Room Simulator function. However, convolution calculates the
exact mathematical convolution function, whereas the Room Simulator is especially
optimized for reverb calculation.
Convolution sample: Here you can select the project with the convolution signal. If the
convolution signal is longer than 1048576 samples, only the first 1048576 samples with be
used.
Original (%). This parameter allows you to enter the level (in percent) of the original audio
signal that will be mixed with the result of the convolution. A value of 0% signifies that the
edited signal will contain exclusively the result of the convolution function, and a 50% value
will mean that the convolution result will be mixed with the original signal at equal
amplitudes.
Result (dB): This parameter sets the volume of the signal resulting from the convolution
function in dB. With values exceeding -10dB, modulations can happen. For this reason,
you should first select lower values.
Convolution – problems and solutions
After pressing the preview button or the OK button, the program does not seem
to respond any more.
On slower computers with long impulse responses, the algorithm responds after a certain
amount of time with a status display message of the progress of the calculation as it works
internally on a block-by-block basis.