I think in this case it's phase inversion of one of the signals as opposed to a ... | Hacker News

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stewars on Oct 3, 2012 | parent | context | favorite | on: What strips vocals from audio when a 1/8' audio ja...

I think in this case it's phase inversion of one of the signals as opposed to a phase shift which would imply a time difference.

mbell on Oct 3, 2012 [–]

There is no phase inversion here. When the signals are the same there is just no voltage across the speaker. Think of it as putting 5 volts on both sides of the speaker, the voltage difference from one side of the speaker to the other is 0 volts, so no current flows and the speaker is at rest.

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