This procedure shows how to create an ICE-ASD
sound in Ansys Sound: ASDforEV. It creates harmonics matched to the engine orders, derived
from the engine RPM.
Harmonic frequencies are controlled by the RPM, and their gains are controlled by
both Speed and Load. These control laws are defined in a .box file that
can be created and edited in the ASD designer module in Ansys Sound: Analysis and Specification. Note: Here RPM, Speed, Load, and Acceleration values
are specific to the ICE-ASD sound, and are not the same (unless connected otherwise by the
user) as the parameters of the same names used in the rest of the software. More
importantly, in the case of a hybrid vehicle for example, the ICE-ASD RPM, which represents
the RPM of the ICE engine, should not be the same as that of the electric
engine.
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Press the speaker button () to turn
on the audio output.
The speaker button turns light blue (
)
.
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Choose the ICE-ASD tab.
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Below ICE-ASD dataset, press the Load .box
file button to load an ICE-ASD dataset.
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If you want to use distinct ASD datasets for acceleration and deceleration, tick the
box Distinct ASD sound for acceleration and deceleration. You can
then load a second .box file by pressing Load .box
file below Deceleration ICE-ASD dataset
Note: This function will operate a linear amplitude crossfade
between the sounds produced
by the 2 datasets over the acceleration range between -0.1 g and 0.1 g.
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Use the RPM, Speed,
Load, and Acceleration number boxes to
manually control the pitch and gain of the ICE-ASD sound, according to the control laws
contained in the loaded .box file(s). If you previously set up external
connections for these parameters, you can also control them with the actual parameters of
the vehicle for example.
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If needed, change the preprocessing formula associated with each number box by clicking
the corresponding button (see Configuring Vehicle Data Preprocessing).
Note: The ICE-ASD sound created is a stereo sound. Both stereo channel signals can be
spatialized individually and independently from the other, the same way as if these 2
signals corresponded to 2 distinct sound functions.
The ICE-ASD sound function is configured. If you want to save
your changes in a preset, refer to Saving a Preset.