Sound_Field.m ------------- Visualizes the sound field above a locally reacting impedance plane. You can choose between: - Sound pressure relative to the free field sound pressure at distance 1. In dB re 1. - Phase of the sound pressure. In degree. - Excess attenuation: Total sound pressure divided by direct sound pressure only. In dB re 1. Positive values mean attenuation (sound pressure is lower than in a free field) - Field impedance (relative to characteristic impedance of air). - Vertical (surface normal) particle velocity. In dB re 1. - Horizotal (surface parallel) particle velocity. In dB re 1. - Ratio of vertical (z) to horizotal velocity (R). In dB re 1. The surface impedance assumes an exp(-iwt) time dependency, therefore most impedances will have a positive imaginary part.

cef.mexw32
cef.mexw64
readme.txt
Sound_Field.fig
Sound_Field.m

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