Steinberg HALION4 Mode D'emploi page 105

OSC 1/2/3 Type
The Oscillator Type defines the basic sound character of the oscillator. The pop-up
menu lists the waveforms (Sine, Triangle, Saw, or Square), followed by the algorithm
(PWM, Sync, CM or XOR). The combination of waveform and algorithm controls the
sound of the oscillator.
• To select an oscillator type, click the icon that indicates the wave shape for OSC1,
OSC2, or OSC3 and select the wave shape and algorithm you want to use from
the pop-up menu.
The following algorithms are available:
Algorithm
PWM
(Pulse Width
Modulation)
Sync
CM
(Cross
Modulation)
XOR
(Exclusive or)
Except for PWM, all algorithms support the Sine, Triangle, Saw, and Square wave
shapes. PWM supports Square wave only.
Description
PWM is only supported by the square waveform. The Waveform
parameter sets the ratio between the high and low value of the square
wave. A setting of 50 % produces a pure square wave. With settings
below or above 50 % the oscillator produces rectangular waves.
This algorithm provides different hard-sync oscillators, where each is
a combination of a master and slave oscillator. The wave shape of the
slave oscillator (Sine, Triangle, Saw, or Square) is reset with each full
wave cycle of the master oscillator. This means that a single oscillator
can produce a rich sync-sound without using other oscillators as
slave or master. The Waveform parameter adjusts the pitch of the
slave oscillator, producing the typical sync sound.
This algorithm provides a combination of two oscillators where a
master oscillator is modulating the pitch of a slave oscillator (Sine,
Triangle, Saw, or Square) at the rate of the audio sample. The
Waveform parameter adjusts the pitch ratio between slave and
master oscillator, resulting in a sound close to frequency modulation.
This algorithm compares two square waveforms with an XOR
operation. Depending on the outcome of the XOR operation, the
waveform shape of a third oscillator (Sine, Triangle, Saw or Square) is
reset. The Waveform parameter adjusts the pitch ratio of the square
oscillators resulting in a sound close to ring modulation of the third
oscillator.
105
Editing Zones in the Sound Editor
The Oscillator Section