Characteristic Acoustic Impedance Calculator
Compute acoustic impedance Z = ρc and reflection/transmission at a boundary.
Input Data
Medium 1 density.
kg/m³
Medium 1 sound speed.
m/s
Medium 2 density.
kg/m³
Medium 2 sound speed.
m/s
Results
Z₁ = ρ₁c₁.
412.972Rayl (kg/(m²·s))
Z₂ = ρ₂c₂.
1,480,000Rayl
(Z₂−Z₁)/(Z₂+Z₁).
0.999442
2Z₂/(Z₂+Z₁).
1.999442
R_p².
0.998884
1−R_i.
0.001116
At a glance:Z = ρc; R_p = (Z₂−Z₁)/(Z₂+Z₁); T_i = 1−R_p². Complements acoustic-intensity-power and refractive-index.
Formula
Z = ρ·c.
R_p = (Z₂−Z₁)/(Z₂+Z₁).
How to Use
- Enter densities and sound speeds of both media.
- The tool returns impedances and coefficients.
Case Studies
air→water (Z 415→1.48e6)
R_p ≈ −0.9994 (almost total reflection).
FAQ
Matched impedance?
If Z₁=Z₂, no reflection (R_p=0).
Related Tools
References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.