🎤 Two-Microphone Sound Intensity Probe: Spacing Bias, Reflections and Phase Mismatch (2D)

Top view of a two-microphone pressure-gradient probe in a plane wave with an optional reflection. Set frequency, level, spacing, wave angle, reflection and channel phase mismatch, and see the true and measured active intensity, the sinc spacing bias and the phase-mismatch error. The 3D tetrahedral probe page supplies the constants and the ideal intensity, with four in-page numerical checks.