Science Fair Hypothesis Materials

May 29th, 2015
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Theory Noise cancellation is a very interesting procedure. First, an initial sound wave is emitted from one source. Next, a sound wave with the same amplitude and frequency, but totally out of phase is emitted from a second source. When this second wave is combined with the first wave, destructive interference occurs (see figure 1), and the sounds cancel each other out

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Science FairQuestionIf two noises are played that are totally out of phase, will they cancel each other out?HypothesisIt is possible to cancel out some of the noise, but not all of it.TheoryNoise cancellation is a very interesting procedure. First, an initial sound wave is emitted from one source. Next, a sound wave with the same amplitude and frequency, but totally out of phase is emitted from a second source. When this second wave is combined with the first wave, destructive interference occurs (see figure 1), and the sounds cancel each other out.Materials- PC computer- 2 speak

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