Final answer:
Sound localization is achieved through the processing of interaural time difference (ITD) and interaural intensity difference (ILD). Each person has unique cues they adapt to throughout their life. This allows us to overcome the limitations of ITD and ILD and determine the location of sounds in the elevation curve.
Step-by-step explanation:
Sound localization is achieved through the brain processing interaural time difference (ITD) and interaural intensity difference (ILD). When a sound source is off-center, the sound reaches the closer ear slightly earlier (ITD) and is slightly louder in that ear (ILD) due to the blocking of sound waves by the head. This allows us to determine the location of the sound in the elevation curve.
Each person adapts to their unique sound localization cues throughout their lifetime. These cues help us overcome the limitations of ITD and ILD, which may be the same for sounds originating from different locations.