The ear can perceive ILDs even where they never occur naturally.

Evidence

This section concerns sounds that in some sense could be said to “deceive” the ear. Such sounds have a psychoacoustic realization that is not what might be expected from knowledge of their acoustic components. In other words, the subjective and objective realizations of sounds cannot be always directly matched up. While some of the examples given may be of no obvious musical use to the performer or composer, they may in the future find musical application in electronically produced music for particular musical effects where control over the acoustic components of the output sound is exact. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1568 (#expands, via linked claim)

Categorization

• XREF: connects to: Rayleigh’s duplex theory links ILDs to high and ITDs to low frequencies; What the ear perceives can diverge from sound’s physical components. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1568; Short time frames make ILD estimates sensitive to interaural coherence

Related

• What the ear perceives can diverge from sound’s physical components. (similarity 0.84)
• Prevailing nineteenth-century views treated the ear as receiving motion souvenirs from sound sources (similarity 0.84)
• Low-frequency interaural level differences cue source distance and signal coherence. (similarity 0.83)
• Low-frequency ILD serves as a distance cue and coherence detector (similarity 0.83)
• Groupings of strong adjacent partials constitute what the ear hears as formants (similarity 0.82)
• ITDs are frequency-independent physically yet frequency-dependent perceptually. (similarity 0.81)
• Subjective perception of sound cannot be predicted simply from its acoustic components (similarity 0.81)
• Humans perceive interaural level differences at frequencies where plane waves produce none (similarity 0.81)
• The head shadows and reflects sound to create level differences between the ears. (similarity 0.80)
• Interaural level differences grow with frequency and side placement (similarity 0.80)
• Humans perceive extended sound sources poorly when their parts emit identical tones (similarity 0.80)
• Interaural level differences grow with frequency and reach up to 20 dB. (similarity 0.80)
• Head scattering creates level differences between the two ears’ received signals. (similarity 0.80)
• Low interaural coherence makes sound events seem diffuse and surrounding (similarity 0.79)
• Acoustic illusions reveal perception mechanisms and shape music performance (similarity 0.79)

Broader Connections

• What the ear perceives can diverge from sound’s physical components. #expands (0.80) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1568
• Short time frames make ILD estimates sensitive to interaural coherence #qualifies (0.75)