Spatial envelopment requires uncorrelated ear signals, not a diffuse sound field

Evidence

An alternative goal of sound reproduction is to control the sound field within the loudspeaker set-up. This means that the pressure and velocity waves originating from the virtual sources are to be synthesized as plane waves or as spherical waves. The targeted sound field would then be well defined, and the reproduced sound field can also be simulated, or even measured. Unfortunately, the errors in the synthesis of the sound field between the targeted and reproduced fields do not say much about the perceptual significance of the deviation. Sometimes a small difference in the wave field causes a large perceptual deviation, and a large deviation in the wave field may be perceptually irrelevant in some cases. However, the advantage of this starting point is that the reproduction techniques can be derived mathematically. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1902 (#corroborates, via linked claim)

Categorization

• XREF: connects to: Envelopment cues below about 80 Hz cannot be reproduced in small listening rooms; Spatial audio systems create illusions of direction and space rather than reproducing them exactly; Physical accuracy of a sound field does not predict perceived accuracy — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1902 (+5 more)

Related

• Perceived sound direction and actual source direction need not coincide (similarity 0.90)
• Physical accuracy of a sound field does not predict perceived accuracy (similarity 0.86)
• Envelopment cues below about 80 Hz cannot be reproduced in small listening rooms (similarity 0.86)
• Uncorrelated noise from surround speakers creates enveloping source perception. (similarity 0.84)
• Uncorrelated ambient signals create an impression of directionless surround sound. (similarity 0.84)
• Sound reproduction’s endpoint is the human listener, not fidelity per se (similarity 0.83)
• Sound field complexity does not change resonance detection thresholds (similarity 0.83)
• Room diffusion is not required for perceived spaciousness (similarity 0.83)
• Recorded spatial content, not loudspeakers, dominates stereo perception (similarity 0.82)
• Room correction cannot substitute for two-eared timbral and spatial perception (similarity 0.82)
• Recording technique is the prime determinant of spatial impressions in sound reproduction (similarity 0.81)
• Two loudspeakers can synthesize a credible 5-channel surround illusion (similarity 0.81)
• Extra surround channels mainly aim at consistent localization and height illusion (similarity 0.81)
• Ambisonic reproduction synthesizes a sound field through codependent speaker arrays rather than direction-assigned channels (similarity 0.81)
• Envelopment cues below roughly 80 Hz are hard to reproduce in small rooms. (similarity 0.81)

Broader Connections

• Spatial audio systems create illusions of direction and space rather than reproducing them exactly #corroborates (0.75)
• Physical accuracy of a sound field does not predict perceived accuracy #corroborates (0.75) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1902