äänipöytätila

äänipöytätila refers to the perceived spatial location of a sound source relative to the listener. It encompasses three main dimensions: left-right, front-back, and up-down. The brain interprets various acoustic cues to determine these locations.

The left-right dimension is primarily determined by interaural time differences (ITDs) and interaural level differences (ILDs). ITDs are the slight differences in the time a sound wave arrives at each ear, while ILDs are the differences in the sound's intensity reaching each ear.

The front-back dimension is more complex and relies on spectral cues, which are modifications to the sound's frequency spectrum caused by the listener's head and outer ears (pinnae). These spectral cues help the brain distinguish whether a sound is coming from the front or the back.

The up-down dimension is also influenced by spectral cues, particularly those shaped by the pinnae. The way sound waves are reflected and filtered by the folds of the outer ear provides information about the sound's vertical position.

The brain integrates these auditory cues with visual information and prior knowledge to create a cohesive and stableäänipöytätila. This ability is crucial for tasks such as locating objects, understanding speech in noisy environments, and navigating through space. The perception ofäänipöytätila can be influenced by factors like the listener's hearing ability, the acoustic environment, and the characteristics of the sound source itself.