Understanding Wind Noise

Wind noise is a complex phenomenon spanning aerodynamics, acoustics, and the physiology of human hearing.  The amount of noise generated depends on factors like 1) speed, 2) riding position, 3) turbulence, and so on.  At moderate cycling speeds, wind noise can impact the ability to hear surrounding sounds.

 

Understanding the complexities of Ear-Wind noise requires specialized testing / analysis.

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10 to 35 mph wind noise measurements - with both in-canal and far-field microphones.

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Measuring and mapping wind noise - different directions, velocities, and turbulence levels.

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Hydrodynamic flume (water tunnel) visualization of flow / ear interaction.

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A.

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B.

Wind tunnel smoke visualization (A) and hydrodynamic flume with fluorescein dye imagery (B).

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Hot wire anemometer (velocity / turbulence) - with dynamic and static pressure measurements.  

Understanding wind noise helps us develop the most effective products.