Virtual Car Sound

A handy and multi-purpose tool, LMS Test.Lab Virtual Car Sound can be used for general sound design and target-setting as well as advanced vibro-acoustic trouble-shooting in the vehicle refinement stage. The LMS Test.Lab Virtual Car Sound solution is mainly applied to vehicles, but can be helpful when analyzing issues found in other rotating machinery products and components. Starting from experimental or CAE data, a sound quality equivalent model ( SQE) is generated that decomposes the interior car noise into powertrain, road/ tire, and wind noise. This sound decomposition methodology has been tested and confirmed by a jury. The SQE model is equivalent in quality and features to the original sound. For troubleshooting and target-setting applications, the model can be refined with a TPA model to study the different structure-borne and airborne path contributions. This virtual vehicle can be driven interactively under different operating conditions. Speed, rpm, throttle, gear and brake can be adjusted. While driving, users can listen to the generated sounds for a subjective evaluation. For objective evaluation and target-setting, FFT-based spectral analysis is complemented with real-time sound quality metrics, like loudness, articulation index and roughness. The partial contribution of the different sound sources and paths is also displayed in real-time. This interactive driving mode gives maximum freedom to the sound engineer to simulate realistic operation conditions. For more project flexibility, this mode comes with a drive-by-file mode for repeatable drive profiles and an external control mode. This could be a CAN-bus or serial port interface that provides the hook-up of an external vehicle simulator. All model components – orders, octave bands, FRFs, accelerations, mounts, forces – can be modified in real-time for evaluation of ’ what if’ -scenarios. Modifications include peak removal, level increase/ decrease, phase corrections, and randomized phasing. Click-free switching between modified models provides straightforward A/ B comparison under any operating condition. During the refinement stage, time is limited and one might only have limited data to build the model. LMS Test.Lab Virtual Car Sound has been designed with these situations in mind. Even with limited data, a SQE model can be created. LMS Test.Lab Virtual Car Sound can handle both monaural and binaural data. Software engineering memiliki misi menyediakan quality engineering software untuk para engineer sehingga mereka dapat lebih produktif dalam pekerjaannya. Kami juga membuatkan aplikasi software engineering yang customized / khusus , dengan harga yang bersaing. Contact us: 0815 614 1954, 0811 891 101, 0817921 7081