Waldorf Edition - Manual (Page 84)

Waldorf Edition
User Manual 84 Waldorf
Glossary
Aftertouch
The majority of contemporary keyboards are capable of generating aftertouch messa-
ges. On this type of keyboard, when you press harder on a key you are already holding
down, a MIDI aftertouch message is generated. This feature makes sounds even more
expressive (e.g. through vibrato).
Aliasing
Aliasing is an audible side effect arising in digital systems as soon as a signal contains
harmonics higher than half the sampling frequency.
Amplifier
An amplifier is a component that influences the volume level of a sound via a control
signal. This control signal is often generated by an envelope or an LFO.
Arpeggiator
An Arpeggiator is a device that splits an incoming MIDI chord into its individual notes
and repeats them rhythmically. Often, different pattern types can be preset to cover a
wide application range. As it is simple to use and creates interesting results, this func-
tion offers a lot of fun.
Attack
An envelope parameter. "Attack" is a term that describes the ascent rate of an envelope
from its starting point to where it reaches its highest value. The Attack phase is initiated
immediately after a trigger signal is received, i.e. after you play a note on the keyboard.
Band Pass Filter
A band pass filter allows only those frequencies around the cutoff frequency to pass.
Frequencies both below and above the cutoff point are dampened.
Band Stop Filter (Notch Filter)
A band stop filter does the opposite of a band pass filter, i.e. it dampens only the fre-
quencies around the cutoff point and lets all other frequencies pass through.
Clipping
Clipping is a sort of distortion that occurs when a signal exceeds its maximum value.
The curve of a clipped signal is dependent upon the system in which the clipping takes
place. In the analog domain, clipping effectively limits the signal to its maximum level.
In the digital domain, clipping is similar to a numerical overflow, and so the polarity of
the signal’s portion that exceeds the maximum level is negated.
Controller (Control-Change)
You can automate all Attack parameters using MIDI controller messages. This lets you
create interesting sound transformations in real time. Controller data are directly crea-