ドップラー効果受信機電卓

I want to calculate New Frequency of Receding Receiver(f')Source Frequency(f0)Receiver Velocity(ur)Wave Velocity(v)
Source Frequency(f0) =	Hz
Receiver Velocity(ur) =	m/s
Wave Velocity(v) =	m/s
New Frequency of Receding Receiver(f') =	Hz