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Doppler-effect calculator

Calculate classical observed frequency for collinear source/observer motion.

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Calculate classical observed frequency for collinear source/observer motion.

Classical collinear model f′ = f(v + vₒ)/(v − vₛ). Sign convention is stated in the field labels; not relativistic.

Source frequency (Hz)Wave speed (m/s)Observer speed toward source (m/s)Source speed toward observer (m/s)