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Doppler Effect Calculator — Free Online Tool
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Doppler Effect Calculator

Calculate observed frequency shift from relative motion

Instructions: Enter the source frequency ($f_0$), wave speed ($v$), observer speed ($v_o$), and source speed ($v_s$). Select the motion directions.
Doppler Parameters

Calculation Results

⚠️ For acoustics and physics education reference only. Source speed must be less than wave speed to avoid a sonic boom singularity.

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