SMI instruments


1. SMI SeeSV (Portable Acoustic Camera):

Product Overview
Portable Sound camera is a real-time handheld sound camera which implements FPGA-based high speed beamforming technology. It is developed for Buzz, Squeak and Rattle (BSR) noise source detection as well as Noise, Vibration and Harshness (NVH) source visualization. It displays transient noise effectively due to its high image per second update rate. The unique design of SeeSV-S205 makes measuring sound easy.


  • Unique, Innovative Design
  • High Sensitivity Digital MEMS Microphone
  • High Resolution Optical Camera
  • FPGA-based Real-Time Analysis
  • Light Weight at 2.0kg
  • Real-time Sound Imaging
  • High Speed Image Update, 25 FPS
  • Linear/Exponential Image Averaging
  • Effective Post Processing

2.  SMI BSR Observer:

Product Overview
BSR Observer is a software released from BSRTools series, designed to measure and represent the position of noises especially Buzz, Squeak, and Rattle (referred to BSR) which occur in the interior as well as exterior of a vehicle. It offers a real-time window demonstrating accelerometer data logger, quantification of noise sources, and noise cancellation (Noise Gate) in real-time for the data measured through DAQ and accelerometers. The recorded data can be viewed as localization of noise source analysis of Root Mean Square (RMS) and Time-frequency, and Displacement conversion. BSRTools is a set of different software and hardware tools, each focusing on measuring, evaluating, and identifying various aspects of Buzz, Squeak, and Rattle.


  • 51.2 kS/s per Channel Max. Sampling Rate
  • 102 dB Dynamic Range and 24-bit Resolution
  • USB 2.0 Power Supply (NI 9234)
  • IEPE (ICP) type Accelerometer
  • 4 Channel Simultaneous Measurement
  • Real-time stream of accelerometer data logger
  • Selective Real-time listening to noise source