Abstract: A technique for encoding Ambisonics audio includes inputting audio to multiple Ambisonics encoders producing respective Ambisonics soundfields. Prior to mixing the soundfields, each soundfield is weighted to mitigate artifacts from order-truncation. After weighting, the soundfields are mixed to produce Ambisonics audio.

Abstract: Ambisonics audio such as may be used for computer simulations such as computer games is improved by using multi-order optimizations that frame an optimization problem that minimizes a cost function across a subset of Ambisonics orders for a chosen Ambisonics order “N”. In a simple form, this cost function minimizes error across all orders (0<=n<=N), and additional weighting is applied to emphasize or de-emphasize particular orders. The cost functions and optimization criteria may be different for binaural and speaker outputs.

Abstract: An audio signal processing apparatus in which different pieces of predetermined parameter information regarding acoustic transfer in a head of a listener are retained as preset candidates, a parameter information list including the retained preset candidates is presented, to prompt a user to select parameter information, and an audio signal for the user is generated by using the user-selected parameter information.

Abstract: Methods and systems are provided for augmenting voice output of a virtual character in an augmented reality (AR) scene. The method includes examining, by a server, the AR scene, said AR scene includes a real-world space and the virtual character overlaid into the real-world space at a location, the real-world space includes a plurality of real-world objects present in the real-world space. The method includes processing, by the server, to identify an acoustics profile associated with the real-world space, said acoustics profile including reflective sound and absorbed sound associated with real-world objects proximate to the location of the virtual character. The method includes processing, by the server, the voice output by the virtual character while interacting in the AR scene; the processing is configured to augment the voice output based on the acoustics profile of the real-world space, the augmented voice output being audible by an AR user viewing the virtual character in the real-world space.

Abstract: A method for determining an environment in which a user is located is described. The method includes receiving a plurality of sets of audio data based on sounds emitted in a plurality of environments. Each of the plurality of environments has a different combination of objects. The method further includes receiving input data regarding the plurality of environments, and training an artificial intelligence (AI) model based on the plurality of sets of audio data and the input data. The method includes applying the AI model to audio data captured from an environment surrounding the first user to determine a type of the environment.

Abstract: An audio signal processing apparatus in which different pieces of predetermined parameter information regarding acoustic transfer in a head of a listener are retained as preset candidates, a parameter information list including the retained preset candidates is presented, to prompt a user to select parameter information, and an audio signal for the user is generated by using the user-selected parameter information.