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The Speed Of Sound
Sound moves quite slowly. An echo demonstrates how slowly it moves – shout at a distant building and you can hear your voice bounce back at you with a slight delay. It moves slowly enough (330m/s) that your brain can detect a time difference between the sound arriving at your left ear and your right ear. This is called the interaural time difference.
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Stereophonic Sound: Use The Headphones In The Labelled Ears Only
Stereo music uses interaural time difference to give the illusion that sound is coming from different directions, and headphones provide the best way to experience that illusion as they push the music directly to each ear.
But to hear stereo properly, you need the headphones on the right way round, otherwise, all the sounds will be reversed – left will come from the right and vice versa, and sounds from the front will sound like they’re coming from behind you.
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Always appreciate the time you get, because you never know how much longer it`ll last.
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