Low-frequency motorcycle rumbling noise was measured by Sound Viewer inside a semi-anechoic chamber.
Source Strength Analysis
Source Strength Analysis
Source Strength Analysis
Hot spots of motorcycle low-frequency rambling noise (< 200 Hz) were identified. The source strengths in terms of sound power levels were determined and ranked.
Motorcycle Noise Sources
Source Strength Analysis
Wave Form and Spectrogram
Motorcycle low-frequency noise sources were located: 1) Lower back clutch; 2) Hanger of front clutch; 3) Upper back clutch; 4) Lower front clutch.
Wave Form and Spectrogram
Low-frequency motorcycle rumbling noise in 2D
Wave Form and Spectrogram
The time-domain wave form and spectrogram of motorcycle low-frequency rambling noise at 20 - 200 Hz).
Determining motorcycle low-frequency rambling noise below 200 Hz in 3D view.
Automotive noise and vibration testing and analysis
Truck Front Dash Panel
Use laser-assisted reconstruction to obtain all vitro-acoustic characteristics of a full-size truck front dash panel.
Wind Tunnel Tests
Use Sound Viewer Pro to analyze the aerodynamically generated sound field around a full-size SUV.
3D Scanning Analysis
Use 3D scanning to analyze the aerodynamically generated sound fields around the rearview mirror of a full-size sedan inside a wind tunnel.
Truck Exhaust Noise
Use Sound Viewer to locate very low frequency exhaust noise of a full-size truck.
Door Slamming Noise
Analyse door slamming sound and observe its time-space-frequency-visual-audio effects of a sedan.
Interior HVAC Noise
Use Sound Viewer to locate HVAC noise sources and determine their levels inside a full-size sedan.
On-line product quality control testing without enclosures
QC for Gearbox & Motor
Locate gearbox noise, estimate its sound power level, and perform order tracking analysis at any user-selected orders on an assembly line.
QC for Electric Motor
Discern normal and defective motors and identify individual orders and speed ranges at which abnormal sounds are detected on the factory floor.
QC for Textile Winder
QC for Textile Winder
Discern normal and defective textile winders and examine the feasibility of using Sound Viewer to perform continuous machine health monitoring on a factory floor.
Vibro-acoustic analysis of household appliances
Shell Vibro-Acoustics
Analyze sound radiation from a shell-type structure and examine the impacts of different damping materials on STL.
Kitchen Sink Disposal
Visualize surface acoustic pressure and normal surface acoustic intensity vector distributions on a disposal.
Hair Clippers and more
Hair Clippers and more
Detect and extract target information from directly measured time-domain signals that are contaminated by random background noise and unspecified interering signals.
Disruptive technology for analyzing noise and vibration
Sound Viewer Overview
Sound Viewer is a one-of-a-kind system that enables one to get a holistic view of vibro-acoustics.
CAT Scan
Sound Viewer offers a super resolution in source localization in sources localization in 3D space.
Extreme Challenges
Extreme Challenges
Examples of extreme challenges for Sound Viewer to locate multiple noise sources in 3D space.