Click and drag the blue line to change the frequency of the sound source
The frequency of the sound measured at the detector
The speed of the detector
The speed of the source
The frequency of the sound emitted by the source
If the detector is moving
towards the source, choose + to make fD
higher.
If the detector is moving away from the source,
choose - to make fD lower.
If the source is moving
towards the detector, choose - to make fD
higher.
If the source is moving away from the detector,
choose + to make fD lower.
Choose the signs such that when the source or
detector moves towards the other, fD
becomes higher,
and when one moves away from the other, fD
becomes lower.