Configuring an ICE-ASD Sound Function

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.
  1. Press the speaker button () to turn on the audio output.
    The speaker button turns light blue () .
  2. Choose the ICE-ASD tab.
  3. Below ICE-ASD dataset, press the Load .box file button to load an ICE-ASD dataset.
  4. 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.
  5. 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.
  6. 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.