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Classical Physics
Mechanics
Speed of Sound Experiment: Hear the Results
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[QUOTE="Phylosopher, post: 6014660, member: 599850"] You don't need a device that record sound beyond 20Hz-20KHz. You just need a device that record 20Hz-20KHz. If the recorder didn't pick up the sound at a certain speed then the sound is out of the range, this is basically because the experiment does not require from us to quantitatively say how much the frequency has shifted, but merely to state whether a human can hear it or not. Since we know the speaker is emitting the sound at the time of observation, we just need to state whether the recorder can pick or cannot pick the sound. (We can graph the change of frequency with time to make it more convincing, since the car is accelerating). There is something I didn't consider before: (dB) Human ear can hear sounds at the specific range 20-20K, but the minimum dB changes with frequency! This makes the experiment more complicated and the experimentalist must take into account these possibilities while preparing the experiment. I am not sure how complicated is the experiment! Is it a thought experiment or a real experiment. Anyway, if it is a real experiment there are a lot to consider. But the main issue I think is with the frequency. [/QUOTE]
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Speed of Sound Experiment: Hear the Results
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