Seat position changes coupling to standing-wave nulls and peaks

Evidence

The listening areas used here are different from that used in the preceding examples, so the MSV numbers will not be directly comparable. Given that we have already seen that moving listeners away from low-order null lines is advantageous, it is clear that some of the large seating configurations in the new study will yield higher MSVs than the smaller, more centrally located areas. Those that avoid the null lines (LCm and LRm) would be expected to show improvements over those that do not. — Toole, Floyd E, Sound reproduction- the acoustics and…, 1595 (#expands, via linked claim)

Standing waves occur when sound waves bounce between reflecting surfaces. The simplest system in which this can occur consists of two reflecting boundaries, as shown in Figure 1.30. In this system, the sound wave shuttles backward and forward between the two reflecting surfaces. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 386 (#expands, via linked claim)

Categorization

• XREF: connects to: Travel distance changes wave phase, making interference vary across space.; Seating that avoids low-order null lines reduces seat-to-seat variation — Toole, Floyd E, Sound reproduction- the acoustics and…, 1595; Standing waves arise when wall spacing equals half-wavelength multiples (+2 more)

Related

• Seating that avoids low-order null lines reduces seat-to-seat variation (similarity 0.84)
• Seat effects are perceptually insignificant and skip equalization (similarity 0.83)
• Seats placed on room-mode null lines increase seat-to-seat bass variation. (similarity 0.81)
• Standing waves create loudness dips at room midpoints (similarity 0.80)
• Sound waves reflecting between two boundaries can form standing waves (similarity 0.80)
• Reflections from adjacent walls create destructive interference nulls at one-half wavelength spacing. (similarity 0.79)
• Standing waves arise from counter-propagating reflections with no net energy flow (similarity 0.78)

Broader Connections

• Seating that avoids low-order null lines reduces seat-to-seat variation #expands (0.85) — Toole, Floyd E, Sound reproduction- the acoustics and…, 1595
• Standing waves arise when wall spacing equals half-wavelength multiples #expands (0.80)
• Sound waves reflecting between two boundaries can form standing waves #expands (0.80) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 386
• Standing waves arise from counter-propagating reflections with no net energy flow #expands (0.75)