Wavefield synthesis fails unless the room is completely anechoic
Evidence
- Reproduction environment: To be successful, the only sound in the space must be that which is radiated by the loudspeakers. Any reflecting boundary will result in spurious wavefronts that will degrade the accuracy of the wavefront reconstruction. Ideally, the array should be in an anechoic room to avoid this. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2240
Categorization
Category: Causal Relationships
Related
- Diffuse-field equations fail in geometrically extreme rooms (similarity 0.86)
- Anechoic chambers misrepresent how loudspeakers sound in normal rooms (similarity 0.84)
- Rectangular rooms fail to randomize sound directions, violating Sabine theory (similarity 0.83)
- The Sabine formula assumes diffuse sound that real rectangular rooms rarely produce (similarity 0.83)
- Real listening rooms produce semi-reflective fields, not free or diffuse fields (similarity 0.82)
- Standing waves from room boundaries prevent diffuse sound fields at low frequencies. (similarity 0.82)
- True diffuse sound fields cannot form in small absorptive listening rooms (similarity 0.82)
- Any sound wavefront can be synthesized from elemental spherical waves (similarity 0.82)
- In small rooms reflections arrive early and never form a diffuse field (similarity 0.81)
- Diffuse-field regions sound best because modes are minimal and level is even (similarity 0.81)
- Non-environment rooms suppress all but direct sound for clearer audio detail and imaging (similarity 0.80)
- Loudspeaker quality depends on off-axis radiation because rooms reflect it (similarity 0.80)
- Room boundary reflections are the second loudest sounds a listener hears (similarity 0.80)
- A small listening room’s first reflections mask the recorded acoustic space (similarity 0.80)
- Room sound homogeneous decay holds for typical rooms but can be engineered away (similarity 0.80)
Broader Connections
- True diffuse sound fields cannot form in small absorptive listening rooms
#corroborates(0.80) — Toole, Floyd E, Sound reproduction- the acoustics and…, 1256 - Real listening rooms produce semi-reflective fields, not free or diffuse fields
#corroborates(0.80) — Toole, Floyd E, Sound reproduction- the acoustics and…, 1769 - The diffuse field assumption underpins room acoustics predictions but fails at low frequencies
#corroborates(0.80) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1774 - The Sabine formula assumes diffuse sound that real rectangular rooms rarely produce
#corroborates(0.75) — Eric J. Heller, Why You Hear What You Hear- An…, 2491 - Diffuse field assumptions fail when sound paths exceed mean free path
#corroborates(0.75) — David Howard, Jamie Angus, coustics and Psychoacoustics, 2063