An audio output apparatus is disclosed. The audio output apparatus that outputs a multi-channel audio signal through a plurality of speakers disposed at different locations, the audio output apparatus includes an input interface, and a processor configured to, based on the multi-channel audio signal input through the inputter being received, obtain scene information on a type of audio included in the multi-channel audio signal and sound image angle information about an angle formed by sound image of the type of audio included in the multi-channel audio signal based on a virtual user, and generate an output signal to be output through the plurality of speakers from the multi-channel audio signal based on the obtained scene information and sound image angle information, wherein the type of audio includes at least one of sound effect, shouting sound, music, and voice, and a number of the plurality of speakers is equal to or greater than a number of channels of the multi-channel audio signal.

Techniques for calibrating listening devices are disclosed herein. The techniques include emitting a predetermined audio signal using an outward-facing transducer located on a first portion of a head-mounted device worn by the user, receiving the predetermined audio signal at a microphone located on a second portion of the head-mounted device, the second portion being different from the first portion, determining a transfer function for the user based on the received predetermined audio signal, and applying the transfer function to audio signals transmitted to the user.

An apparatus including circuitry configured for: displaying content within a viewport; displaying a symbol representing a sound source within the viewport; detecting one or more gestures that place the displayed symbol in the displayed content; disambiguating between a first placement method, performed for the symbol, that locks the sound source to a position that moves with displayed content moving within the viewport and a second placement method performed for the symbol that is different to the first placement method and locks the sound source to a position that does not move with displayed content moving within the viewport, wherein the first placement method includes a disambiguating gesture relative to the viewport, for the symbol, indicating movement of the symbol relative to the viewport that disambiguates the first placement method from the second placement method.

A sound spatialisation method includes determining digital processing parameters to be applied to sound signals to be broadcast by a set of at least two loudspeakers in order to reproduce a virtual sound source at a desired position, and restoring sound signals by the loudspeakers during which the digital processing parameters are applied to the sound signals. The sound spatialisation method also includes defining a trajectory defined by a set of N points, with two consecutive points of the trajectory being connected together by a curve, and positioning during which the desired position of the virtual sound source is defined on the trajectory.

An apparatus for rendering an audio scene comprising an audio source at an audio source position and a plurality of diffracting objects, comprises: a diffraction path provider for providing a plurality of intermediate diffraction paths through the plurality of diffracting objects, an intermediate diffraction path having a starting point and an output edge of the plurality of diffracting objects and an associated filter information for the intermediate diffraction path; a renderer for rendering the audio source at a listener position, wherein the renderer is configured for determining, based on the output edges of the intermediate diffraction paths and the listener position, one or more valid intermediate diffraction paths from the audio source position to the listener position, determining, for each valid intermediate diffraction path of the one or more valid intermediate diffraction paths, a filter representation for a full diffraction path, and calculating audio output signals for the audio scene using an audio signal associated to the audio source and the filter representation for each full diffraction path.

A method for generating an audio signal associated with a virtual sound source is disclosed. The method comprises obtaining an input audio signal x(t) and modifying the input audio signal x(t) to obtain a modified audio signal. The latter step comprises performing a signal delay operation. Optionally, modifying the input audio signal comprises a signal inverting operation and/or a signal amplification or attenuation and/or a signal feedback operation. The method further comprises generating the audio signal y(t) based on a combination, e.g. a summation, of the input audio signal x(t) and the modified audio signal.

The present disclosure provides an acoustic output apparatus including one or more status sensors, at least one low-frequency acoustic driver, at least one high-frequency acoustic driver, at least two first sound guiding holes, and at least two second sound guiding holes. The status sensors may detect status information of a user. The low-frequency acoustic driver may generate at least one first sound, a frequency of which is within a first frequency range. The high-frequency acoustic driver may generate at least one second sound, a frequency of which is within a second frequency range including at least one frequency exceeding the first frequency range. The first and second sound guiding holes may output the first and second spatial sound, respectively. The first and second sound may be generated based on the status information, and may simulate a target sound coming from at least one virtual direction with respect to the user.

Implementations described herein relate to methods, systems, and computer-readable media to provide spatialized audio in virtual experiences. The spatialized audio may be used in voice communications such as, for example, voice and/or video chats. The chats may include spatialized audio that is combined at a client device, or at an online experience platform, and is targeted to a particular user. Individual audio streams may be collected from a plurality of avatars and other objects, and combined based on the target user. The audio may also include background and/or ambient sounds to provide a rich, immersive audio stream in virtual experiences.

Disclosed herein are systems and methods for presenting mixed reality audio. In an example method, audio is presented to a user of a wearable head device. A first position of the user's head at a first time is determined based on one or more sensors of the wearable head device. A second position of the user's head at a second time later than the first time is determined based on the one or more sensors. An audio signal is determined based on a difference between the first position and the second position. The audio signal is presented to the user via a speaker of the wearable head device. Determining the audio signal comprises determining an origin of the audio signal in a virtual environment. Presenting the audio signal to the user comprises presenting the audio signal as if originating from the determined origin. Determining the origin of the audio signal comprises applying an offset to a position of the user's head.

During an electronic call between two individuals, a sound localization point simulates a location in empty space from where an origin of a voice of one individual occurs for the other individual.