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A general way to implement 3d sound localization is to use the HRTF(Head-related transfer function). First, compute HRTFs for the 3D sound localization, by formulating two equations; one represents the signal of a given sound source and the other indicates the signal output from the robot head microphones for the sound transferred from the source.
3D sound reconstruction is the application of reconstruction techniques to 3D sound localization technology. These methods of reconstructing three- dimensional sound are used to recreate sounds to match natural environments and provide spatial cues of the sound source.
These effects include localization of sound sources behind, above and below the listener. Some 3D technologies also convert binaural recordings to stereo recordings. 3D Positional Audio effects emerged in the 1990s in PC and video game consoles. 3D audio techniques have also been incorporated in music and video-game style music video arts.
When localizing 3D sound in spatial domain, one could take into account that the incoming sound signal could be reflected, diffracted and scattered by the upper torso of the human which consists of shoulders, head and pinnae. Localization also depends on the direction of the sound source. [5]
Acoustic source localization [4] is the task of locating a sound source given measurements of the sound field. The sound field can be described using physical quantities like sound pressure and particle velocity. By measuring these properties it is (indirectly) possible to obtain a source direction.
Sound localization is a listener's ability to identify the location or origin of a detected sound in direction and distance. The sound localization mechanisms of the mammalian auditory system have been extensively studied. The auditory system uses several cues for sound source localization, including time difference and level difference (or ...
An application of 3D sound synthesis is the sense of presence in a virtual environment, by producing more realistic environments and sensations in games, teleconferencing systems, and tele-ensemble systems. 3D sound can also be used to help those with sensory impairments, such as the visually impaired, and act as a substitute for other sensory feedback.
QSound is essentially a filtering algorithm. It manipulates timing, amplitude, and frequency response to produce a binaural image.Systems like QSound rely on the fact that a sound arriving from one side of the listener will reach one ear before the other and that when it reaches the furthest ear, it is lower in amplitude and spectrally altered due to obstruction by the head.