Motorcycle Low-frequency rambling noise

Motorcycle low-frequency rambling noise was measured by Sound Viewer inside a semi-anechoic chamber.

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 low-frequency noise sources were located: 1) Lower back clutch; 2) Hanger of front clutch; 3) Upper back clutch; 4) Lower front clutch. 

The time-domain wave form and spectrogram of motorcycle low-frequency rambling noise at 20 - 200 Hz).

 Locating motorcycle low-frequency rambling noise below 200 Hz in 2D view.

Determining motorcycle low-frequency rambling noise below 200 Hz in 3D view.

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Sound Viewer is a one-of-a-kind system that enables one to get a holistic view of vitro-acoustics.

Sound Viewer offers a super resolution in source localization in sources localization in 3D space.

Examples of extreme challenges for Sound Viewer to locate multiple noise sources in 3D space