Technical data

ASTi ACE Studio Components Reference Guide Rev. M DOC-01-TELAS-CRG-4
Copyright © 2014 Advanced Simulation Technology inc. 65
2.27. Wave
Summary: This signal source produces a waveform signal, which can be mixed in
any proportion on any of the analog output channels. The waveform type may be
sine, sawtooth, triangle, or square.
Description: This signal source produces a waveform signal, which can be mixed
in any proportion on any of the analog output channels. Both amplitude and
frequency can be controlled by input variables from elsewhere in the model, or
from the host interface. The frequency can also be modulated by another signal
within the signal processor, with the model having control over the depth of
modulation. The waveform signal type can be sine, sawtooth, triangle or square.
The waveform frequency is determined by a combination of the frequency variable
and the frequency modulating signal. If no signal source is connected to the
frequency modulating signal field, only the frequency variable is used.
If a signal source is connected to the frequency modulating signal field, the actual
frequency of the waveform is varied according to the amplitude of the modulating
signal. The degree to which the frequency varies is controlled by the modulation
depth. The calculation is:
ActualFreq = Freq x (1 + (ModDepth x ModSignal))
where Freq is the Frequency variable and ModSignal is the amplitude of the
modulating signal. A modulating signal with an active state of OFF should be
treated as an amplitude of 0.0.
When the waveform frequency is less than or equal to 0, the wave component does
not generate a signal.
The amplitude of the final signal is controlled by the gain variable. When the gain
is less than or equal to 0, the wave component does not generate a signal.
When the waveform type is square, there is an additional control for the Mark/
Space ratio. This ratio is the proportion of time, the square wave amplitude is
positive to time, the square wave amplitude is negative in a given cycle. If the
waveform type is not square, the Mark/Space ratio is ignored.
Audio Inputs
FreqMod-
Signal
Type Default Value
audio n/a
Description: Frequency modulation signal, controls the actual gen-
erated frequency via the following formula:
ActualFreq = Freq x (1+ (ModDepth x ModSignal))
Usually it falls in the range of 0 to 1.0, when used in conjunction
with a unity gain modulation signal.
Note: To avoid unpredictable behavior care should be taken to
ensure that the product of modulation depth and modulation signal
does not span a range greater than -1.0 to +1.0.
Control Inputs
Frequency
Type Default Value
float32 1.0
Description: Frequency (in Hertz) of wave generated by the wave-
form synthesizer. The frequency is the number of oscillations made
per second for the given waveform. If not external variable is con-
nected to Frequency, the value of the scaler is used.
Modifier: Multiply
Modifier_default: 0.0
Range: 0.0 -1/2*Sample Rate
Units: Hz