Doppler Effect Approaching Source Calculator

I want to calculate
Wave Velocity(v) = m/s
Wavelength in Front of Source(λf) = m
New Frequency of Approaching Source(f') = Hz
 

The Doppler effect/shift is the change in frequency of a wave moving relative to its source. the received frequency is higher during the approach.

Doppler Effect Approaching Source formula:

New Frequency of Approaching Source: f'＝ v / λf

where λf = Wavelength in Front of Source, v =Wave Velocity, f' = New Frequency of Approaching Source.

For example, when Wave Velocity(v) = 10 m/s, Wavelength in Front of Source(λf) = 1 m, Then New Frequency of Approaching Source(f') = 10 Hz.

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