The NVH Simulator's Data Preparation Tool (DPT) provides you with the tools for extracting both NVH data and vehicle performance characteristics from recordings made on the road or on a test bench.
DPT contains all the decomposition tools necessary for efficient and easy processing of NVH recordings. Validation tools are included to check the integrity of the data.
The purpose of DPT is to:
- Prepare NVH data to allow the user to perform free driving in the NVH DeskTop Simulator. This can be done by decomposing the noise of the vehicle into engine related noise and the residual noise (e.g., wind, road, tyre noise)
- Allow the engine-related noise and the residual noise to be decomposed into finer components, which means that the user can listen to these components individually
- Configure a free-driving performance model from vehicle speed/time and rpm/time curves as well as permit editing of an existing model to meet new design criteria
The result will be sound objects, which contain the data together with the rules that determine how the sounds will be synthesized in real-time based on values from a performance model derived from on-road measurements. Performance models define the relationship between the instantaneous position of the controls (throttle, brake, gear) and the vehicle’s road speed and engine rpm. The sound objects are then saved in a database from which you can extract when creating a Simulator model for vehicle assessment.
Source Level Data Preparation Type 8601-L has been updated to include improved order extraction methods, a signal enhancement method, a direct method, and an improved grouping matrix. The module now calculates the remainder to determine wind noise.
The DTS Tool Box now has crossfade, tuner, and batch modes; audio playback so that you can immediately listen to the results of any manipulations; and automatic creation of constant masking sounds from a sweep, by three different methods.
DTS On-Road Simulator Type 8601-N
The On-Road Simulator provides real time sound creation inside a drivable car, for increased realism and better understanding of a sound's context. Existing recorded sounds are modified by the Simulator, so that the driver can hear the sound that would be produced by the vehicle being analyzed, inside another vehicle.
DTS Contribution Analyzer Type 8601-P
The Contribution Analyzer calculates contributions within the Simulator, and can display them as 3D colour maps. Modifications to contributions, source strengths, and transfer functions can be performed off-line or in real-time, using DTS Engineering Type 8601-B. The created filters can be exported for target setting.
DTS Fixed Vibration Type 8601-R
The Fixed Vibration module adds fixed driving and event replay to the DTS Simulator, providing two channels of sound and six channels of vibration.
For more information on DTS Vehicle Level Data Preparation Type 8601-K-N and DTS Source Level Data Preparation Type 8601-L-N see link