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Destructive interference cancels out the sound - so all you hear is silence.
Yes they can. It's called destructive interference. When 2 sound waves converge on each other and the waves are 180 degrees out of phase then they will destructively interfere and the net effect will be the negation of both waves so you hear nothing.
they are to be shaped relatively close and the crest and trough need to be almost touching (or really close)
Interference of sound waves occurs when one sound wave is not in phase with another. Graphically, this means that the sin/cos function representing the second wave does not line up exactly with the first one and the differences in sounds that result interfere with each other.
They can't interfere.
"lower amplitude"
They interfere. The interference will be constructive (create a greater wave) if they are in phase, they will interfere destructively if they are out of phase.
Destructive interference cancels out the sound - so all you hear is silence.
Yes they can. It's called destructive interference. When 2 sound waves converge on each other and the waves are 180 degrees out of phase then they will destructively interfere and the net effect will be the negation of both waves so you hear nothing.
they are to be shaped relatively close and the crest and trough need to be almost touching (or really close)
There isn't any energy lost when waves interfere destructively, so it technically doesn't "go" anywhere. One wave will be at a high point, but the other will be at a low point and will be essentially acting like "negative energy." Don't think of it like "losing energy," but more like just adding together positive and negative energies to find a value between the two.
Interference of sound waves occurs when one sound wave is not in phase with another. Graphically, this means that the sin/cos function representing the second wave does not line up exactly with the first one and the differences in sounds that result interfere with each other.
They can't interfere.
Two waves of equal magnitude but opposite phase interfere with one another to cause the waves to disappear. This is caused by
When recording a snare drum with a mic on the top and the bottom, a phenomenon known as phase cancellation can occur. Sound is a wave. A property of waves is that they can interfere with each other destructively and constructively. Imagine the sound waves caused when hitting a snare drum. The waves from the top of the drum will go into the top mic first, then the bottom mic. The waves from the bottom of the drum will go into the bottom mic first then the top mic. Because of the timing of the waves as they arrive at each mic, they will destructively interfere, and many of the frequencies integral to a good snare drum sound will be low in gain (volume). So a good audio engineer will use a phase reversal lead on the bottom mic. This is just like a normal lead, only the positive and negative pins have been reversed, and the phase cancellation will not occur.
They can combine constructively or destructively, depending on their phase.
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