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5

It depends what method is used. If it's simply played back 'faster' without actually changing the data, then of course there is no lasting damage. This would be how a simple sampler would ordinarily do it, by changing the speed, ie data rate, of the playback. If you resample so the same amount of audio plays back in half the time at the same sample rate - ...


1

When there's shear waves (like in an ice layer or a steel rail, the high frequencies travel faster than the low frequencies due to higher shear wave speed. A sound impact source results in a downward chirp sound at some distance away for the wave travelling through the material. Try it if you are near a frozen pond with a thrown rock. In the atmosphere, ...


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