Hard acoustic boundaries support standing waves at odd numbers of quarter wavelengths

Evidence

The effect of this is to allow a standing wave to exist when there is only an odd number of quarter wavelengths between the two boundaries. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 409

Categorization

• corroborated: 2 independent passages support this claim — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 409