Aerodynamic noise source measurement system for a motor vehicle
First Claim
1. An aerodynamic noise measurement system for a vehicle comprising:
- a wind tunnel that generates a flow of air;
a test area within the flow of air;
a plurality of sound reflectors positioned along one side of the vehicle and arranged outside of the flow of air, wherein each of the sound reflectors is arranged to receive sound waves from a specific portion of the vehicle simultaneously in real-time and includes a microphone array that measures_aerodynamic noise generated by a vehicle in the test area and generates data signals indicative of the measured aerodynamic noise; and
an analyzer system that receives the data signals and generates an image of the vehicle and a noise map overlay with precise position of noise sources based on the data signals.
20 Assignments
0 Petitions
Accused Products
Abstract
An aerodynamic noise measurement system for a vehicle uses sound reflectors to determine the sound wave propagation of aerodynamic noise of the vehicle. The vehicle is placed within a test section of a wind tunnel. The air flow of the wind tunnel generates the aerodynamic noise as it passes over the vehicle. An array of sound reflectors is placed outside of the air flow of the wind tunnel. Microphone arrays receive the aerodynamic noise directly from the source and from the sound reflectors. An analyzer system forms an acoustic image of the vehicle based on the aerodynamic noise. A viewing device displays an image of the vehicle with an overlay of aerodynamic noise data in real-time.
-
Citations
18 Claims
-
1. An aerodynamic noise measurement system for a vehicle comprising:
-
a wind tunnel that generates a flow of air; a test area within the flow of air; a plurality of sound reflectors positioned along one side of the vehicle and arranged outside of the flow of air, wherein each of the sound reflectors is arranged to receive sound waves from a specific portion of the vehicle simultaneously in real-time and includes a microphone array that measures_aerodynamic noise generated by a vehicle in the test area and generates data signals indicative of the measured aerodynamic noise; and an analyzer system that receives the data signals and generates an image of the vehicle and a noise map overlay with precise position of noise sources based on the data signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An aerodynamic noise measurement method comprising:
-
generating a flow of air; locating a vehicle within the flow of air; measuring aerodynamic noise from the vehicle at a plurality of sound reflectors positioned along one side of the vehicle and arranged outside the flow of air; measuring aerodynamic noise from a first portion of the vehicle at a first one of the plurality of sound reflectors and simultaneously in real-time measuring aerodynamic noise from a second portion of the vehicle at a second one of the plurality of sound reflectors; generating data signals indicative of the measured aerodynamic noise; generating an image of the vehicle and a noise map overlay with precise position of noise sources based on the data signals. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification