Lecture 22 - 3.5.25 - Scene analysis and auditory localization

auditory space

The perceived area in which sounds originate, allowing individuals to identify the direction and distance of sounds in their environment.

Auditory Scene Analysis

The way sound sources in the auditory scene are separated into individual perceptions.

sequential grouping

The process of organizing sounds that occur in a sequence, allowing listeners to perceive them as a coherent stream.

so it could be something like launching a rocket into space? or stocks! or repairing or manufacturing cars. volunteering! pet shelter or food pantries(!)→ getting food to the right pantry from donors (transportation

Binaural Cues

Cues that utilize both ears to help locate sound sources, including interaural time difference (ITD) and interaural level difference (ILD).

Monaural Cues

Cues that utilize one ear to help locate sound sources, including spectral cues and the head-related transfer function (HRTF).

Simultaneous Grouping

Separating multiple sound sources that are active at the same time into distinct perceptions.

Sequential Grouping

Perceiving sounds that follow one another in time as belonging to the same source.

Common Fate

A principle of auditory grouping where sounds that move together are perceived as belonging together.

Spectral Cues

Information for sound location derived from the frequency spectrum of the sound as affected by the head and pinna.

Head-Related Transfer Function (HRTF)

The effect that the shape of the head and ears have on the sound frequencies that reach the ears.

Cone of Confusion

Areas in auditory space where interaural time difference (ITD) and interaural level difference (ILD) do not provide useful spatial information.

Jeffress Coincidence Model

A model explaining how narrowly tuned ITD neurons detect the localization of sound based on the timing of signals arriving from both ears.