42 results about "Head-related transfer function" patented technology

A media system and a method of using the media system to reproduce spatial audio based on head-to-torso orientation, are described. The method includes determining a head-to-source orientation and a head-to-torso orientation based on head orientation data generated by a head tracking device. Determining the head-to-torso orientation includes determining torso movements based on movements of the head. The torso can be determined to move when the head movements meet a head movement condition, such as a predetermined angle of movement or pattern of movement. A binaural audio filter that is based on a head-related transfer function corresponding to both the head-to-source orientation and the head-to-torso orientation is applied to an audio input signal to generate an audio output signal. The audio output signal is played to accurately recreate spatial audio having sounds emitted to the user by a sound source. Other aspects are also described and claimed.

A system for synchronizing and spatializing media, comprising client device and server device. A method for operation includes: tracking the real-time spatial coordinates of both devices via wireless sensors; synchronizing media playback using a timestamp-based protocol that compensates for network latency and clock offset; and applying directional audio filters, such as Head-Related Transfer Functions (HRTF), on the client device to render audio appearing to originate from server device's physical location. The method is further characterized by compensating for acoustic propagation and signal processing delays to ensure accurate spatiotemporal alignment. The system may be enhanced by a multimodal Al configured to perform operations such as real-time voice-preserving translation and the generation of synchronized, spatialized haptic feedback based on semantic event markers.

This invention is entitled "Arrangement for Generating a Head-Related Transfer Function Filter". The invention discloses an arrangement for acquiring images used to generate a head-related transfer function filter. In this arrangement, the camera of a mobile phone or similar portable device is adjusted to take an image. All acquired images are analyzed, and only suitable images are further sent for generating the head-related transfer function filter. The arrangement is further configured to provide instructions to the user to adequately cover the entire head and other relevant body parts.

To provide an "audio signal processor" for down-mixing a surround audio signal so as to obtain an excellent sound image feeling.SOLUTION: This device is provided with a pseudo surround audio signal generating part 1 for generating a surround audio signal SigA of 7.1. 2ch from an inputted audio stereo signal SigIN of 4ch, a signal processing part 2 for processing the surround audio signal SigA and outputting it as a signal SigB for down mix, and a down mix part 3 for synthesizing the signal SigB for down mix and outputting a stereo audio signal SigOUT of 2ch. The signal processing unit 2 combines the input audio signal of each channel of the SigA with the audio signal obtained by convolving the head-related transfer function from the speaker corresponding to the audio signal to the listener at a ratio corresponding to the position of the speaker, and outputs the combined signal as the audio signal of the SigB.SELECTED DRAWING: Figure 1

There is provided a method for generating a personalized Head Related Transfer Function (HRTF). The method can include capturing an image of an ear using a portable device, auto-scaling the captured image to determine physical geometries of the ear and obtaining a personalized HRTF based on the determined physical geometries of the ear.

A head related transfer function (HRTF) generation method and apparatus, relating to the technical field of audio processing. The method comprises: an electronic device outputting first prompt information, the first prompt information being used for instructing a target individual wearing a head-mounted device to perform a first operation, and the first operation causing relative movement between the electronic device and the head-mounted device; playing test audio signals during the first operation, and receiving feedback audio signals and position information from the head-mounted device, wherein the feedback audio signals are test audio signals received by the head-mounted device at a plurality of different spatial positions, the spatial positions are the spatial positions of the electronic device relative to the head-mounted device, and the position information is used for determining the spatial positions; and on the basis of the test audio signals, the feedback audio signals and the position information, determining an HRTF corresponding to the target individual.

Generating a personalised Head-Related Transfer Function (HRTF) for a user, the system comprising: a sound source at a first position; a user device comprising: a left microphone arranged to be at a l

An audio signal processor includes a harmonic signal generator to generate a harmonic signal that includes a signal generated by frequency scaling components of a target audio signal by a factor of k, a left audio signal generator to generate a left audio signal by convolving a head-related transfer function from a target localization position of the target audio signal to a left ear of a listener with the target audio signal, a right audio signal generator to generate a right audio signal by convolving a head-related transfer function from the target localization position to a right ear of the listener with the target audio signal, a left synthesizer to generate a left channel audio signal by synthesizing the left audio signal and the harmonic signal, and a right synthesizer to generate a right channel audio signal by synthesizing the right audio signal and the harmonic signal.

An audio personalisation method for generating a personalised Head-Related Transfer Function, HRTF, the method comprising the steps of: obtaining a base HRTF model comprising a first set of parameters; outputting a sound from a virtual sound source according to the base HRTF model, the virtual sound source having an intended virtual position; receiving at least one user indication corresponding to a user virtual position of the virtual sound source, wherein the intended virtual position is different to the user virtual position; updating the first set of parameters to a second set of parameters based on the at least one indication from the user so as to update the user virtual location; and generating a personalised HRTF model comprising the second set of parameters, wherein the difference between the intended virtual position and the user virtual position according to the personalised HRTF model is less than the difference between the intended virtual position and the user virtual position according to the base HRTF model.

A head-related transfer function (HRTF) generation system includes one or more processors configured to retrieve first image data of a first ear of a subject, compare the first image data with second image data of a plurality of second ears to identify a particular second ear of the plurality of second ears matching the first ear, identify a template HRTF associated with the particular second ear, and assign an HRTF to the subject based on the template HRTF.

An audio signal processing device for downmixing surround audio signals so as to obtain a good sound image includes a pseudo surround audio signal generator for generating surround audio signals SigA of 7.1.4 channels from input 2-channel stereo audio signals SigIN, a signal processor for signal-processing the surround audio signals SigA and outputting results as downmixing signals SigB, and a downmixer for synthesizing the downmixing signals SigB and outputting 2-channel stereo audio signals SigOUT. For an input audio signal SigA of each channel, the signal processor synthesizes the audio signal and an audio signal obtained by convolving a head-related transfer function from a loudspeaker corresponding to the audio signal to a listener into the audio signal, at a ratio matching the position of the loudspeaker, and outputs the result as an audio signal SigB.

A system for synchronizing and spatializing media, comprising client device and server device. A method for operation includes: tracking the real-time spatial coordinates of both devices via wireless sensors; synchronizing media playback using a timestamp-based protocol that compensates for network latency and clock offset; and applying directional audio filters, such as Head-Related Transfer Functions (HRTF), on the client device to render audio appearing to originate from server device's physical location. The method is further characterized by compensating for acoustic propagation and signal processing delays to ensure accurate spatiotemporal alignment. The system may be enhanced by a multimodal Al configured to perform operations such as real-time voice-preserving translation and the generation of synchronized, spatialized haptic feedback based on semantic event markers.

Systems and techniques are provided for processing audio data. For example, a process can include determining a set of near-field Head-Related Transfer Functions (HRTFs) corresponding to a user, based on a plurality of audio measurements each obtained using a respective measurement position at a near-field measurement distance. A set of far-field HRTFs corresponding to the user can be generated based on the set of near-field HRTFs. The set of far-field HRTFs can be compared to one or more candidate far-field HRTFs obtained based on anthropometric features corresponding to the user. An individualized HRTF can be determined for the user as a candidate far-field HRTF of the one or more candidate far-field HRTFs having minimum spectral differences from the set of far-field HRTFs at corresponding measurement positions.

An audio personalisation method for simulating perception of a vertical displacement of a sound source, the method comprising the steps of: obtaining an input head related transfer function, HRTF, associated with a user; determining an intended vertical displacement for the sound source; selecting at least one frequency region in the input HRTF; and adjusting the amplitude of the selected frequency region(s) to simulate the intended vertical displacement for the sound source. This provides improvements to the generation and / or manipulation of HRTFs to allow adjustment of the perceived location of a sound source.

The invention discloses a head-related transfer function generation method and device, and relates to the technical field of audio processing. The method comprises the steps that the electronic equipment outputs first prompt information, the first prompt information is used for indicating a target individual wearing the head-mounted equipment to execute a first operation, and the first operation enables relative motion to be generated between the electronic equipment and the head-mounted equipment; when the first operation is carried out, a test audio signal is played, feedback audio signals and position information from the head-mounted device are received, the feedback audio signals are test audio signals received by the head-mounted device at multiple different spatial positions, and the feedback audio signals are test audio signals received by the head-mounted device at multiple different spatial positions; the spatial position is the spatial position of the electronic equipment relative to the head-mounted equipment, and the position information is used for determining the spatial position; and determining the HRTF corresponding to the target individual according to the test audio signal, the feedback audio signal and the position information.

Systems, methods, software, and devices are disclosed herein that transform anechoic audio signals into spatialized audio signals. An audio processing method includes identifying a target sound source direction and a reference head related transfer function (HRTF) associated with a target subject and obtaining one or more retrieved HRTFs from an HRTF dataset based at least on the reference HRTF and the target sound source direction. The method continues with executing a neural field model to produce an output based on an input. Example input includes the one or more retrieved HRTFs and the target sound source direction, and example output includes a predicted HRTF. The anechoic audio signal may then be processed based at least on the predicted HRTF to produce a spatialized audio signal.

To provide a processing device capable of generating sound data that allows a listener to easily perceive the direction of a sound.SOLUTION: A processing device including a head-related transfer function processing unit configured to apply a head-related transfer function corresponding to an angle of a virtual sound source with respect to a listening position to monaural sound source data to generate stereo first sound data, a volume panning processing unit configured to perform volume panning processing on the first sound data based on the angle of the virtual sound source to generate stereo second sound data, and a correction processing unit configured to correct a delay amount and a volume of the second sound data based on arrangement information of a plurality of sound output devices to generate stereo third sound data to be output by two of the plurality of sound output devices.SELECTED DRAWING: Figure 1

Provided is an information processing method comprising: a step for acquiring, in a first terminal, first sound information; a step (S102) for converting, in the first terminal, the first sound information into second sound information for generating a representative sound arriving at a reference position from a representative point which is set in a three-dimensional sound field by using an acoustic signal; a step (S105) for detecting, in a second terminal, the position of a user or the head direction of the user in the three-dimensional sound field; a step for calculating, in the second terminal, a position of a playback representative point corresponding to the position of the representative point on the basis of the detected position of the user or the head direction of the user and the reference position; and a step (S106) for generating, in the second terminal, an output sound signal by using the received second sound information and a head transfer function corresponding to the calculated position of the playback representative point.

A method for controlling a wearable device to output audio includes receiving input binaural audio configured to be output by the wearable device. The method includes receiving data indicative of an orientation and / or a movement of a head of a user of the wearable device from a sensor of the wearable device. The method includes determining a virtual listening space based on the data. The method includes determining a head-related transfer function (HRTF) based on the virtual listening space. The method includes rendering, based on the orientation and / or the movement of the head of the user, output binaural audio to be output by the wearable device. The output binaural audio may be rendered based on the input binaural audio and based on the HRTF.

An audio personalisation method for simulating perception of a vertical displacement of a sound source, the method comprising the steps of: obtaining an input head related transfer function, HRTF, associated with a user; determining an intended vertical displacement for the sound source; selecting at least one frequency region in the input HRTF; and adjusting the amplitude of the selected frequency region(s) to simulate the intended vertical displacement for the sound source. This provides improvements to the generation and / or manipulation of HRTFs to allow adjustment of the perceived location of a sound source.

The application provides a sound signal processing method, device and equipment and a storage medium. The method comprises the following steps: obtaining a to-be-processed stereo frequency domain signal; performing spatial information decomposition on the to-be-processed stereo frequency domain signal to obtain a plurality of virtual sound signals, the plurality of virtual sound signals being virtual sound signals corresponding to different spatial orientations; performing spatial information reconstruction on the to-be-processed stereo frequency domain signal according to the plurality of virtual sound signals and head-related transfer functions corresponding to the plurality of virtual sound signals to obtain a frequency domain output signal corresponding to the to-be-processed stereo frequency domain signal, wherein the head-related transfer function corresponding to a target virtual sound signal is used to represent the phase and frequency response of the target virtual sound signal from the spatial orientation corresponding to the target virtual sound signal to the head, and the target virtual sound signal is any one of the plurality of virtual sound signals. The technical solution makes the stereo sound have rich spatial information.

Techniques and devices are described for generating modified audio signals. The techniques include receiving an audio signal at a device, tracking a movement of the device, generating a first modified audio signal to spatialize the audio signal, generating a second modified audio signal to spatialize the audio signal, causing the first modified audio signal to be rendered using a first speaker of the device, and causing the second modified audio signal to be rendered using a second speaker of the device. In some cases, the first modified audio signal is generated using a first head-related transfer function (HRTF) and the movement of the device, and the second modified audio signal is generated using a second HRTF and the movement of the device, where the second HRTF is different from the first HRTF. Numerous variations and configurations will be apparent in view of this disclosure.

Example systems, devices, media, and methods are described for efficiently processing an audio track of a virtual object with a head-related transfer function (HRTF). Audio tracks are processed by determining a current position (direction and optionally distance) of the virtual object with respect to the head of a user, identifying a current audio zone from predefined audio zones responsive to the determined current position where each of the audio zones has a corresponding left predefined filter and a corresponding right predefined filter, applying the left and the right predefined filters corresponding to the current audio zone to the audio track to produce a left audio signal and a right audio signal, and presenting the left audio signal with a first speaker and the right audio signal with a second speaker.

An audio signal processing device for downmixing surround audio signals so as to obtain a good sound image includes a pseudo surround audio signal generator for generating surround audio signals SigA of 7.1.4 channels from input 2-channel stereo audio signals SigIN, a signal processor for signal-processing the surround audio signals SigA and outputting results as downmixing signals SigB, and a downmixer for synthesizing the downmixing signals SigB and outputting 2-channel stereo audio signals SigOUT. For an input audio signal SigA of each channel, the signal processor synthesizes the audio signal and an audio signal obtained by convolving a head-related transfer function from a loudspeaker corresponding to the audio signal to a listener into the audio signal, at a ratio matching the position of the loudspeaker, and outputs the result as an audio signal SigB.

A hearing aid and a corresponding supplementary device, a storage medium and a method of operation are disclosed, wherein the hearing aid comprises an antenna and a transceiver circuit for establishing a communication link with a supplementary device configured as a user control interface, an input device for picking up sound from the hearing aid environment to provide at least one electrical input signal, a signal processor configured to process the at least one electrical input signal and to provide a processed signal, an output unit for presenting a stimulus representing the processed signal perceptible as sound to the user, wherein the signal processor is configured to start measuring a corresponding head-related transfer function in a far-field calibration mode based on a test sound signal picked up by the at least one microphone from a loudspeaker of the supplementary device and an electrical version of the test sound signal received by the antenna and transceiver circuit from a transmission of the supplementary device at a point in time when the supplementary device informs the hearing aid.

A method for personalized sound virtualization is provided. The method includes measuring environmental sound using a first microphone of a wearable audio device. The first microphone is in or proximate to a right ear of a user. The method further includes measuring the environmental sound using a second microphone of the wearable audio device. The second microphone is in or proximate to a left ear of the user. The method further includes using acoustic data obtained from the measuring of the environmental sound via the first and second microphones, calculating individualized parameters, such as interaural time delay, relating to individualized HRTFs for the user. The method further includes using the individualized parameters to adjust audio playback by the wearable audio device. The audio playback may be adjusted at least partially based on an individualized HRTF generated by adjusting a generic HRTF according to the individualized parameters.

An audio signal processing method is provided. The method separates a left and a right channel audio signal to a center-left and center-right channel audio signals, and a side-left and side-right channel audio signals, and processes the center and side channel audio signals by a Head Related Transfer Function (HRTF) so as to simulate the audio signals into several audio source positions related to a user, then synthesizes the processed audio signals into dual channel audio signals according to the user's hearing characteristics by a frequency compensation process. The invention further provides an audio signal processing apparatus to perform the audio signal processing method.

A system and method for externalizing sound. The system includes a headphone assembly and a localizer configured to collect information related to a location of the user and of an acoustically reflective surface in the environment. A controller is configured to determine a location of at least one virtual sound source, and generate head related transfer functions that simulate characteristics of sound from the virtual sound source directly to the user and to the user via a reflection by the reflective surface. A signal processing assembly is configured to create one or more output signals by filtering the sound signal respectively with the HRTFs. Each speaker of the headphone assembly is configured to produce sound in accordance with the output signal.

Systems and techniques are provided for processing audio data. For example, a process can include determining a set of near-field Head-Related Transfer Functions (HRTFs) corresponding to a user, based on a plurality of audio measurements each obtained using a respective measurement position at a near-field measurement distance. A set of far-field HRTFs corresponding to the user can be generated based on the set of near-field HRTFs. The set of far-field HRTFs can be compared to one or more candidate far-field HRTFs obtained based on anthropometric features corresponding to the user. An individualized HRTF can be determined for the user as a candidate far-field HRTF of the one or more candidate far-field HRTFs having minimum spectral differences from the set of far-field HRTFs at corresponding measurement positions.

The present invention relates to a method for determining the head-related transfer function (HRTF) of at least one person (2) using a vehicle (1), wherein the head-related transfer function (HRTF) is calculated based on features of the person (2) acquired by cameras (4, 6, 7). The invention is characterized in that the features are acquired at least partially sequentially in time by a plurality of cameras (4, 6, 7), wherein at least one of the cameras (4) is arranged to acquire the person (2) in a region outside the vehicle (1) as the person (2) approaches and opens the vehicle (1).