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Document Type: Tutorial
NI Supported: Yes
Publish Date: Jun 8, 2007

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SM Instruments Noise Mapping System

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Overview

SM Instruments Co., Ltd. is a specialist of sound and vibration measurements and control. SM Instruments provides measurement and control equipments, engineering service, sensors, design and consulting on sound and vibration applications. Very specialized engineers of SM Instruments are well trained and have experience to develop high performance sound and vibration equipments and facilities. Especially, SM Instruments has specialty in aerospace testing facility, sound visualization, network monitoring and factory measurement automation. SM Instruments has been supporting aerospace, automotive, home appliance industries. Its equipments has been being used in R&D purpose as well as factory automation purpose. SM Instruments pursues world best sound and vibration leader.

Table of Contents

  1. Application Areas
  2. Architecture
  3. Other Resources
  4. About SM Instruments

Application Areas

SM Instruments focuses their efforts on the following areas:

  1. Sound Visualization
  2. Aerospace Acoustic Testing Facility
  3. Factory Testing Automation
  4. Network Monitoring
  5. Sensors


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Noise Mapping continues to be a primary application area for their systems.  They leverage National Instruments products to provide users with a complete Noise Mapping solution.  Some examples of their solutions are shown in the following section.

Architecture

SM Instruments has provided a number of Noise Mapping solutions for different applications areas.  For example, SM Instruments used a 48 channel microphone array shown in the picture below to acquire the noise generated by a train passing by.  The sensor data from this array of microphones was acquired using National Instruments Dynamic Signal Acquisition Hardware.

Then, using LabVIEW Software, they were able to perform FFTs and use noise mapping algorithms to determine the locations and frequencies of noise. 


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The final result of this analysis is an overlay of the sound intensity plot over the train image.  This allows the user to accurately tell the true causes of noise.  This is shown in the picture below.


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Other Resources

For more information, please visit SM Instruments.

To Request a quote, please send an email to youngkey@smins.co.kr.

SM Instruments Alliance Program Directory.

About SM Instruments

SM Instruments is a National Instruments Alliance Member.  They specialize in High Channel Count DSA Noise Mapping systems. 

 

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This tutorial (this "tutorial") was developed by National Instruments ("NI"). Although technical support of this tutorial may be made available by National Instruments, the content in this tutorial may not be completely tested and verified, and NI does not guarantee its quality in any way or that NI will continue to support this content with each new revision of related products and drivers. THIS TUTORIAL IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND AND SUBJECT TO CERTAIN RESTRICTIONS AS MORE SPECIFICALLY SET FORTH IN NI.COM'S TERMS OF USE (http://ni.com/legal/termsofuse/unitedstates/us/).