Over the last 20 years, Automotive Audio has changed dramatically with the design of true multichannel playback systems fully integrated and adjusted to the specific car. Today some of the most advanced sound technologies are being developed and applied in Automotive Audio.
Expanding on its mission to furthering the knowledge and skills of professionals involved in audio development, the Audio Product Education Institute (APEI) will promote a new online event on its Automotive Audio pillar to explore and explain the practical approach in designing and implementing those systems.
Recently the role of audio in the automotive industry has significantly changed. Sound systems are used to design the sound of cars, including the sounds the car itself needs to generate to convey its motion to the driver, passengers, and even to the exterior world, signaling its presence. The impact of Battery Electric Vehicle’s (BEV’s) has a profound effect on the way we think about sound in and around vehicles and microphone challenges and use cases.
This event will be presented by Roger Shively (JJR Acoustics, LLC) APEI’s Automotive Pillar Chair. Following opening remarks, the event will feature two presentations from Mads Herring Jensen (Technical Product Manager, Acoustics, COMSOL), and Christof Faller (Managing Director, Illusonic GmbH), exploring simulation, visualization, tuning, and auralization topics.
Session 1: Modeling Strategies and Techniques in Car Cabin Acoustics (Mads Herring Jensen)
Simulation and virtual models plays an important role in the integration of sound systems into the car cabin environment as well as their calibration. This session looks at various modeling approaches and techniques used when assessing these systems. The low to mid frequency behavior is captured with a full wave models, while the high frequency behavior is typically captured with ray acoustics techniques. Emergence of new numerical methods and improved hardware shifts the frequency at which ray techniques are applied. The presentation also discusses boundary conditions as well as source characterization.
Session 2: Visualizing, Tuning, and Auralizing Car Cabin Simulation Results (Christof Faller)
A useful method for visualizing the results from an FEA or Ray Tracing models is discussed. Impulse response information is taken directly from a simulation model or generated from amplitude and phase result and imported into an Illusonic tool for reviewing time and frequency data for each point in the results file. For automotive, the number of results point could be microphones set in an array for each listening position. The results data can be grouped for review and comparison to measured data for the purpose of model updates. They can also be grouped and averaged for a virtual equalization as well as auralization. This process will be reviewed and demonstrated.
