HXB PreSense – Playback system for NVH simulator PreSense

HXB PreSense is the ideal playback hardware for the interactive NVH driving simulator...

HXB PreSense is the ideal playback hardware for the interactive NVH driving simulator PreSense.

Delays between driver interaction and acoustic output are not noticeable thanks to its calibrated low latency playback. Two independently equalized headphone connectors ensure binaural and aurally accurate playback via connected headphones. The integrated CAN FD interface supports CAN (ISO 11898-2) as well as CAN FD and enables real-time transfer of CAN (FD) data from a vehicle to the simulation software PreSense. This allows for controlling various operating states within the simulation by real-time data from the vehicle, such as engine rpm, speed, throttle position, gear selection and so on. Additional playback systems, such as labO2 and labO2-V1 or labP2/-V1, can easily be integrated into the playback system, enabling further headphones or shakers.

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HXB PreSense is the ideal playback hardware for the interactive NVH driving simulator PreSense.

Delays between driver interaction and acoustic output are not noticeable thanks to its calibrated low latency playback. Two independently equalized headphone connectors ensure binaural and...

HXB PreSense is the ideal playback hardware for the interactive NVH driving simulator PreSense.

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Highlights

HEAD acoustics hardware for ideal combination with NVH driving simulator PreSense software
calibrated low latency headphone playback
integration of vehicle data with CAN (FD)
headphone equalization

Applications

Virtual prototyping & engineering
- Make simulation variants (virtual prototypes) audible
- Experience and evaluate sound and vibration comfort as early as possible in the development process (e.g. estimation of NVH performance of a first powertrain prototype in various vehicles)
- Interactive experience of TPA results

Decision-making in the development process
- Make what-if analyses audible
- Perceive the effects of different measures without (needing) an additional prototype
- Assess countermeasures without prior NVH knowledge
- Decision-making process: hear differences, convince colleagues and decision makers

Acoustic assessment of control strategies for hybrid vehicles
- Evaluate energy management and corresponding control strategies at an early development stage
- Find the best compromise concerning energy consumption, drivability and acoustic performance through an interdisciplinary approach.

Active Sound Design & Engine Sound Enhancement
- Experience engine sound enhancement (ESE), futuristic sounds for electric vehicles and the impact of AVAS on interior noise
- Speed up the development process: Use the simulator to advance tuning and validation of ASD (Active Sound Design)
- Consider vehicle performance and masking noise from wind, tire/road and powertrain without requiring a real vehicle or test track
- Revolutionize your workflow: create sounds with the integrated BlackBerry QNX ASD software
- Integrate third-party sound synthesizers using interfaces for software/hardware in the loop

Making TPA results perceptible
- Listen to sound shares individually and find the root cause of noise complaints
- Determine responsible transfer paths for an unwanted sound phenomena
- Derive countermeasures and optimization potential
- Simplified in-situ assessment by decision makers

Troubleshooting and target sound setting
- Assess various measures or sound manipulations by means of jury testing involving customers, colleagues or decision makers

Benchmarking: Comparing vehicles, engines and development stages in virtual test drives
- Weather-independent testing, requiring neither a real test track nor physical test vehicles
- Testers are able to interactively control, evaluate and virtually modify sounds.
- Even minor changes to vehicle sound are instantly perceivable

Variants

The NVH simulator is available as a scalable solution in different configurations and configuration levels. Interfaces, e.g. to third-party software solutions like IPG CarMaker^®, significantly extend its capabilities.

Desktop simulator

The desktop simulator offers calibrated and aurally accurate sound reproduction via a binaural headset. Pedals, steering wheel and a monitor simulate the driving situation.

SoundSeat

Combined with the Sound Seat, the NVH simulator can be operated like a real vehicle. The user accelerates, brakes and changes gear while the system adapts sounds and vibrations in real time to the respective driving situation. Shakers provide realistic steering wheel and seat vibrations while a large screen offers an overall visual impression of the driving situation.

SoundCar

Integrated into an adapted real vehicle, the NVH simulator facilitates playback in a real vehicle environment. Both the acoustic and technical vibration-specific aspects of sound perception are considered. The system reproduces sound scenarios recorded in the vehicle by simultaneous generation of airborne sound and vibration stimulus, e.g. from steering column and driver’s seat.

Complete vehicle simulator

PreSense can be integrated as a subsystem in a full-fledged vehicle simulator with movable platform. To correspondingly adapt sounds in the NVH simulation software, the vehicle software transmits operating state variables such as engine speed, vehicle speed and load via a software interface.

Mobile NVH simulator

As a mobile version with ANC headphones, the NVH simulator can be used in a real vehicle without costly conversion measures. Virtual vehicle sounds are played back in a real driving situation, and the operating state variables are transmitted via CAN bus. For better comparability, the test vehicle should be in the same vehicle class as the simulation, as vibrations cannot be artificially modified.