Behringer DSP1024P - Manual (Page 22)

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VIRTUALIZER PRO DSP1024P
modulations can clearly be heard when occurring in the midrange frequency band, due to the “sensitivity” of
human hearing. The ear immediately detects changes in midrange frequencies, while its sensitivity to
frequency modulation in the extreme low end of the frequency spectrum is reduced. Frequency modulation can
also be used to produce “wanted” effects. The popular chorus effect, for instance, is basically the sum of a
variety of frequency modulations. The original signal is slightly delayed in the chorus algorithm, then added
again and modulated by means of an oscillator. Subsequently, modulating frequencies (of different pitch) are
applied to the original signal, which produces the well-known “floating” chorus sound. Basically, frequency
modulation is the starting point for all kinds of chorus-type effects: by simply adding the delayed signal, without
modulating the original, you can produce a delay effect. Since chorus effects use very short delay times, the
resulting delay effect is not perceived as such. However, when you increase the delay time, there is a clear gap
between original and effect signals, and delay becomes audible. A highly intensive effect can be achieved by
combining reverb/delay programs with modulation effects. For this reason, the BEHRINGER VIRTUALIZER PRO
also features multi-effects programs combining reverb or delay with, for example, a chorus effect.
In addition to the multi-effects programs and special-purpose effects, most of the VIRTUALIZER PRO’s effect
programs offer “pure” reverb programs, because “common” reverb is still the most important effect for mix-down
or live applications. Therefore, we at BEHRINGER want to provide you with a variety of reverb programs, so that
you have appropriate presets available for each specific application.