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ACOUSTIC UNITS

Specific Acoustic Impedance Converter

Convert pressure divided by particle velocity between MKS rayl, CGS rayl and SI multiples.

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Calculation steps

Work through one step at a time or reveal the complete calculation. The steps use your current inputs.

    How to calculate

    Express pressure divided by particle velocity in Pa·s/m, distinguishing CGS and MKS rayl.

    1 CGS rayl = 1 dyn·s/cm³ = 10 Pa·s/m; 1 MKS rayl = 1 Pa·s/m

    Worked example

    1 CGS rayl is 10 MKS rayl. A megarayl is 1000000 Pa·s/m.

    Assumptions and input details

    Specific acoustic impedance is pressure divided by particle velocity, not volume-velocity acoustic impedance in Pa·s/m³ or mechanical impedance in N·s/m. Convert a known real value, magnitude or one signed component using the same basis. Complex phase, frequency response, fluid density and sound speed are not inferred.

    References: BIPM: SI quantities and prefixes · Georgia Tech: specific acoustic impedance and CGS units

    Using this calculator

    Can I enter my own problem?

    Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.

    Are the results exact?

    Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.

    Is my input uploaded?

    The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.

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