You can perform troubleshooting for external noise issues with high reproducibility.
Conventional field pass-by measurement is still the only method for certifying exterior radiation noise during driving, but indoor pass-by testing is a highly effective method that allows for reproducible troubleshooting of exterior noise in a controlled environment, such as a semi-anechoic chamber. For more details, please contact us.
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basic information
**Features** - Simulation of vehicle pass-by noise tests in a semi-anechoic chamber for product development and troubleshooting. - Analysis performed on virtual pass-by time history signals synthesized from individual recorded signals for flexible measurement. - Ideal for measurements in limited spaces where it is difficult to place a microphone at the recommended distance of 7.5 m from the center of the vehicle. - The amplitude of the microphone signal is corrected by assuming that noise reaches from one point on both sides (left and right acoustic centers), regardless of frequency. - To achieve better consistency between indoor and outdoor vehicle pass-by results, recalculation is performed at different acoustic center positions using the same recorded data. - Time histories measured by the microphone, virtual time histories, and analysis results are stored separately in a database. - Thorough management of constraints for verification based on predefined and user-defined constraint lists. - Supports simultaneous calculations on both sides of the vehicle or calculations in two stages by changing the driving direction using a single row of microphones parallel to the test vehicle. For more details, please contact us.
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Company information
Bruel & Kjaer (Spectris Corporation, HBK Division) will reflect the diligence of Denmark and the innovation of Japan in our products. We aim to bring the experience and wisdom of our Danish headquarters, which has been dedicated to "acoustics and vibration for 75 years," to Japan through Bruel & Kjaer Japan. Additionally, we want to showcase Japan's delicate and advanced technology, which is at a world-class level, to the world through the Bruel & Kjaer Group's network.
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