bouldersoundguy
Well-known member
The first image illustrates polarity. All the differences are restricted to the amplitude domain (vertical dimension on the timeline). If they are mixed together at the same level they would cancel out 100% at all frequencies.
The second image illustrates delay. All the differences are restricted to the time domain (horizontal dimension on the timeline). The result is that most of the frequencies of the right channel will be out of phase with the left channel, to a degree depending on the amount of delay and the frequency in question. If they are mixed together as the same level the resulting signal will be +6dB at some frequencies, -∞dB at others and the rest will be somewhere between those two values. The +6dB frequencies occur at multiples of 360°. Summing at 0dB occurs 90° and 270° from any multiple of 360°. Total cancellation occurs 180° from any multiple of 360°.
The second image illustrates delay. All the differences are restricted to the time domain (horizontal dimension on the timeline). The result is that most of the frequencies of the right channel will be out of phase with the left channel, to a degree depending on the amount of delay and the frequency in question. If they are mixed together as the same level the resulting signal will be +6dB at some frequencies, -∞dB at others and the rest will be somewhere between those two values. The +6dB frequencies occur at multiples of 360°. Summing at 0dB occurs 90° and 270° from any multiple of 360°. Total cancellation occurs 180° from any multiple of 360°.