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.
10 to 35 mph wind noise measurements - with both in-canal and outside microphones.
Measuring and mapping wind noise - different directions, velocities, and turbulence levels.
Turbulence intensity (TI), fast Fourier transform (FFT), and power spectral density (PSD) analysis.
Flow (smoke) visualization - with simultaneous wind noise audio and turbulence cross correlation.
Surface pressure measurements with a GRAS 48LX-1 ultra-thin (1mm) precision mounted sensors.
KURZ hot wire anemometers (velocity / turbulence intensity) and differential pressure manometer.
Understanding wind noise helps us develop the most effective products.