I have a chiming clock, which has an electronic chime. Those don't go out of tune. However, though it sounds perfect in the same room, when heard from down the hall in another room, it sounds off-key; about a half-step flat. Any idea what might cause this effect?
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Yes--I mentioned the Doppler effect in a comment above. And no, I was not walking; I was lying still in bed.
Very interesting point!
Thank You Bob. I was just playing in a sense remembering a long time ago. My thought came from how a car sounds at the Drag Races going by at 300MPH does not sound like it really sounds like. And, the different places along that route of travel.
tsmog, it sounds as if your race car analogy is about the Doppler effect; how sound seems to change pitch as it passes by you, first approaching, then receding into the distance....
The clock is not moving; nor does it have a "tick-tock" sound. ;-)
hmmmm . . . I will have to open a science book instead of postulating :) However, and with jest, maybe just taking a half-step will bring it back into tune :)