Wind Noise Physics
Despite the prevalence of ear wind noise, a singular, comprehensive explanation remains elusive due to the multifaceted nature of the phenomenon. Research is fragmented across diverse disciplines, including acoustics, fluid dynamics, and psychoacoustics, each addressing specific aspects without integrating the complex interplay.
Complexity of the Problem:
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Intricate Ear Geometry: The human ear, with its complex structure, poses significant challenges for accurate modeling and measurement.
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Turbulent Flow Complexity: Turbulent flow, especially around complex shapes, is notoriously difficult to model and predict.
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Near-Field Effects: The near-field region around the ear, where wind noise originates, is dominated by complex interactions between hydrodynamic and acoustic phenomena.
The field of aeroacoustics is complex, and the distinction between hydrodynamic and acoustic pressure is crucial for a full understanding of the sound generation by flow. At Cat-Ears, we are bridging existing knowledge gaps by systematically investigating the generation, propagation, and perception of cycling related ear wind noise.
Listening to the Hotwire - how it helps us understand wind noise:
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Complementary analysis: Enhances quantitative data interpretation.
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Real-time feedback: Immediate auditory cues on wind noise changes.
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Direct turbulence perception: Audibly reflects the changing turbulence.
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Intuitive pattern recognition: Detects subtle variations in spectral data.
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Sensor validation: Instant feedback for optimizing the HW placement.
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Acoustic vs. non-acoustic separation: Helps understand the sources.
Hear the Difference between oncoming turbulence (3.5 TI) and turbulence over the concha cavity.
Listening to the hotwire requires a system to amplify, condition, digitize, and convert the electrical signal into audible sound through headphones.
More to follow...