Abstract: Described are computer-based methods and systems, including non-transitory computer program products, for audio data processing. In some examples, a 3-dimensional audio projection method includes receiving a signal including audio data and perceived location data. The perceived location data corresponds to a desired location from which sound associated with the audio data is to be perceived by a user in a 3-dimensional virtual environment. In addition, the method includes receiving a location and orientation of the user in physical space; determining a physical location in the physical space in which the user is to perceive the sound based on the perceived location data and the location and orientation of the user in physical space; and projecting the sound to the user in a 3-dimensional format based on the physical location in the physical space.