Employing reflection and diffraction signals around a wedge to determine the wedge angle

Area of Science:

• Acoustics
• Wave Propagation
• Geometrical Optics

Background:

• The acoustic field around rigid wedges comprises both geometrical acoustics and diffraction components.
• Understanding these components is crucial for predicting sound behavior in various environments.

Purpose of the Study:

• To investigate the acoustic field surrounding rigid wedges.
• To introduce a novel visualization technique, the polarity plot, for analyzing acoustic fields.
• To propose a method for determining wedge angles using polarity plots.

Main Methods:

• Analysis of acoustic fields, including geometrical acoustics and diffraction contributions.
• Development and application of the polarity plot visualization.
• Observation of patterns within polarity plots to infer wedge characteristics.

Main Results:

• The polarity plot effectively depicts the polarity of the diffracted impulse response.
• The plot also visualizes the number of geometrical acoustics contributions around a wedge.
• Distinct patterns in polarity plots correlate with specific wedge angles.

Conclusions:

• Polarity plots offer a new way to characterize acoustic fields around wedges.
• The proposed measurement strategy, based on polarity plot patterns, could enable experimental determination of wedge angles.