Phase shifting shared partials inadvertently alters amplitude through interference

Evidence

Primarily, it is important to ensure that there are no partials shared by tones that are to be phase-shifted. If in fact some are shared, then phase shifting will alter the amplitude of the shared partial, since the relative phase will induce constructive or destructive interference. — Eric J. Heller, Why You Hear What You Hear- An…, 2210

Categorization

• QUESTION: A methodological pitfall in phase experiments worth remembering when designing or reading auditory perception studies.
• XREF: connects to: Changing a component’s phase by 180 degrees is equivalent to subtracting that partial — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 454