"higher amplitude"
constructively apex
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.
interfere with each other
they are to be shaped relatively close and the crest and trough need to be almost touching (or really close)
destructive interference
the amplitudes add together
"lower amplitude"
louder
constructively apex
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.
interfere with each other
they are to be shaped relatively close and the crest and trough need to be almost touching (or really close)
destructive interference
They must in phase and must have at least approximately the same frequency. If the two waves are in phase and have the same frequency, then they will have continuous constructive interference. If the two waves have different, but similar, frequencies then they will alternate between constructive and destructive interference.
They can't interfere.
A bigger amplitude. If the interference is perfectly constructive (same frequencies, in phase), the resulting amplitude will equal the sum of the two wave amplitudes.
If two sound waves are close in frequency,they can combine so that they interfere both constructivly and constructively at regular intervals the intervals depend on the difference between the two frequencies The repeated changes in loudness are called beats.:)