Is tempo affected by the Doppler effect ?
would the beat of music be changed as the source approaches or recedes
from the observer?
Absolutely. The tempo would speed up as the source approaches you.
Yes. It's just like spinning a record (remember records?) faster on the
Yes, in the same way and for the same reason that the pitch is affected, the
tempo is also affected. If the source of music moves away from the
listener, the beat appears to go slower then when the source of the music
Richard E. Barrans Jr., Ph.D.
PG Research Foundation, Darien, Illinois
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Update: June 2012