Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method of determining noise sound contributions of noise sources of a motorized vehicle

一种机动车辆、噪声的技术，应用在测量超声波/声波/次声波、语音分析、测量振动等方向，能够解决不实际、粗略等问题

Active Publication Date: 2016-04-06
BRUEL & KJAER SOUND & VIBRATION MEASUREMENT
View PDF4 Cites 61 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method gives very rough results and is impractical for assessing the ensemble of the large number of independent noise sources present in complex vehicle configurations like cars, trucks or buses

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of determining noise sound contributions of noise sources of a motorized vehicle
  • Method of determining noise sound contributions of noise sources of a motorized vehicle
  • Method of determining noise sound contributions of noise sources of a motorized vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0072] figure 1 is a simplified schematic diagram of an acoustic measurement system coupled to a car 102 under test for determining the individual noise of multiple physical noise sources of the car 102 at the level of the driver's ear, according to a first embodiment of the present invention voice contribution. The acoustic measurement system includes a plurality of reference microphones 109-117 placed adjacent to or at least in the vicinity of each of the physical noise sources. The acoustic measurement system also includes a measurement computer 132 having a software programmable microprocessor. Acoustic measurement systems may include suitably adapted or programmed versions of the PULSE measurement platform, designed to perform sound and vibration measurements and signal analysis. The PULSE platform is commercially available from the applicant / assignee in a number of configurations. The measurement computer 132 is connected to the plurality of reference microphones 109-...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a method and an acoustic measurement system for determining individual noise sound contributions of a plurality of physical noise sources of a motorized vehicle at a target or reference location. The method comprises steps of placing a plurality of reference microphones at respective reference positions adjacent to respective ones of the physical noise sources, placing a measurement microphone at the target location, recording a plurality of noise sound signals and recording a target noise signal. The plurality of noise sound signals are adaptively separated using blind source separation to produce a plurality of mutually independent noise sound signals representing respective estimated noise sound signals of the plurality of physical noise sources. Each of the mutually independent noise sound signals is correlated with the recorded target noise signal to determine time domain or frequency domain characteristics of a plurality of linear transfer path filters representing respective transfer functions between the plurality of independent noise sound signals and the measurement microphone at the target location. At least one of the independent noise sound signals, representing one of the physical noise sources, may be applied to the corresponding linear transfer path filter to generate at least one target noise signal component representing the individual noise sound contribution of the physical noise source at the target location.

Description

technical field [0001] The invention relates to a method and an acoustic measurement system for determining the individual noise sound contributions of a plurality of physical noise sources of a motor vehicle at a target or reference location. The method comprises the steps of placing a plurality of reference microphones at respective reference locations adjacent to respective ones of the physical noise sources, placing measurement microphones at target locations, recording the plurality of noise sound signals and recording the target noise signal . The plurality of noise sound signals are adaptively separated using blind source separation to produce a plurality of mutually independent noise sound signals representing respective estimated noise sound signals of the plurality of physical noise sources. Each of the mutually independent noise sound signals is correlated with the recorded target noise signal to determine timing of a plurality of linear transfer path filters repre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00G06F17/50G10L25/48G10L21/0216G10L21/0272
CPCG10L21/0216G10L25/48G10L21/0272G01H3/00G06F30/15G06F2119/10G01H17/00G10L21/0232G10L2021/02166
Inventor 安德烈斯·珀西·舒马彻
Owner BRUEL & KJAER SOUND & VIBRATION MEASUREMENT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com