Ambisonic reproduction synthesizes a sound field through codependent speaker arrays rather than direction-assigned channels
Evidence
Unlike stereo, however, no particular speaker is assigned to a particular direction, such as left, right and so forth. Instead, all the speakers work in concert to provide the necessary sound field. That is, all the speakers work together to provide a pressure component and, by feeding appropriate levels and phases of the other signals to the loudspeakers, all cooperate to synthesize the necessary velocity components. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2231
Categorization
- XREF: Connects to ambisonics as a spatial audio technique underlying modern VR and 360 audio formats readers may know from binaural or HRTF work in earlier chapters. — connects to: Two loudspeakers can synthesize a credible 5-channel surround illusion; The ventriloquism effect lets a single monophonic center channel satisfy most on-screen dialogue — , Toole, Floyd E - Sound reproduction-…, 1691; Spatial audio systems create illusions of direction and space rather than reproducing them exactly (+2 more)
- corroborated: 2 independent passages support this claim — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2231
Related
- Two loudspeakers can synthesize a credible 5-channel surround illusion (similarity 0.89)
- Stereo reproduction injects room and speaker location cues unrelated to the recording (similarity 0.84)
- Uncorrelated ambient signals create an impression of directionless surround sound. (similarity 0.83)
- Uncorrelated noise from surround speakers creates enveloping source perception. (similarity 0.83)
- Extra surround channels mainly aim at consistent localization and height illusion (similarity 0.83)
- Recorded spatial content, not loudspeakers, dominates stereo perception (similarity 0.83)
- Spatial audio systems create illusions of direction and space rather than reproducing them exactly (similarity 0.82)
- Amplitude panning produces equivalent spatial perception across headphones and loudspeakers. (similarity 0.82)
- Recording technique is the prime determinant of spatial impressions in sound reproduction (similarity 0.81)
- Spatial envelopment requires uncorrelated ear signals, not a diffuse sound field (similarity 0.81)
- The ventriloquism effect lets a single monophonic center channel satisfy most on-screen dialogue (similarity 0.80)
- Adding rear speakers at matching angles does not improve spatial illusion (similarity 0.80)
- Perceived sound direction and actual source direction need not coincide (similarity 0.79)
- Spatial audio uses psychoacoustic illusions called phantom images to mimic real sound sources (similarity 0.79)
- Stereo loudspeakers create directional illusion through summed phase shifts mimicking time delays (similarity 0.79)
Broader Connections
- Spatial audio systems create illusions of direction and space rather than reproducing them exactly
#expands(0.75) - Amplitude panning produces equivalent spatial perception across headphones and loudspeakers.
#complicates(0.72) - Audio decorrelation creates perceptually transparent extra independent channels from few signals
#corroborates(0.70)