AR and VR Engineering
Interaural level difference (ILD) is the difference in sound pressure level reaching each ear, which helps the auditory system determine the direction of a sound source. This phenomenon occurs because sound waves are often louder at the ear closest to the source due to the head creating a shadow effect that attenuates the sound for the ear farther away. ILD plays a critical role in 3D audio perception, contributing to how humans localize sounds in space.
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