Google Inc.

The Provost Fellows and Scholars of the College of the Holy and Undivided Trinity of Queen Elizabeth, Near Dublin

Frank Boland

Marcin Gorzel

Ian Kelly

Brian O'Toole

Damien Kelly

Anil Christopher Kokaram

Francois Pitie

John Squires

Provided are methods and systems for updating a sound field in response to user movement. The methods and systems are less computationally expensive than existing approaches for updating a sound field, and are also suitable for use with arbitrary loudspeaker configurations. The methods and systems provide a dynamic binaural sound field rendering realized with the use of 'virtual loudspeakers.' Rather than loudspeaker signals being fed into the physical loudspeakers, the signals are instead filtered with left and right HRIRs (Head Related Impulse Response) corresponding to the spatial locations of these loudspeakers. The sums of the left and right ear signals are then fed into the audio output device of the user.

Virtual sound systems and methods

Provided are methods and systems for delivering three-dimensional, immersive spatial audio to a user over a headphone, where the headphone includes one or more virtual speaker conditions. The methods and systems recreate a naturally sounding sound field at the user's ears, including cues for elevation and depth perception. Among numerous other potential uses and applications, the methods and systems of the present disclosure may be implemented for virtual reality applications.

3D immersive spatial audio systems and methods

A method of providing an audio signal comprising spatial information relating to a location of at least one virtual source () in a sound field with respect to a first user position comprises obtaining a first audio signal comprising a plurality of signal components, each of the signal components corresponding to a respective one of a plurality of virtual loudspeakers (-) located in the sound field; obtaining an indication of user movement; determining a plurality of panned signal components by applying, in accordance with the indication of user movement, a panning function of a respective order to each of the signal components; and outputting a second audio signal comprising the panned signal components.

Method and apparatus for generating an audio output comprising spatial information

The invention provides a method and system for the automated post production of a single video file, the method comprising the steps of gathering video data from a plurality of camera sources; gathering audio data from a plurality of microphone sources; using an automated tracking offline algorithm to track a sound emitting from a moving target object in a 3D space, to provide localization data of said target object to identify an optimum camera source to provide video data of said target object; and composing a composite video sequence of said moving target from a plurality of identified optimum camera sources in a single video file. The algorithm relies on both video data from multiple camera views and audio data from multiple microphone arrays to infer the 3D position of the active speaker over the duration of the captured presentation.

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Dublin, Ireland

Frank Boland