Abstract: An apparatus comprises a receiver (201) receiving a multi-channel audio signal representing audio for a scene. An extractor (203) extracts at least one directional audio component by applying a spatial filtering to the multi-channel signal where the spatial filtering is dependent on the multi-channel audio signal. A feature processor (205) determines a set of features for the first directional audio component and a categorizer (207) determines a first audio source category out of a plurality of audio source categories for the directional audio signal in response to the set of features. An assigner (209) assigns a first audio source property to the first directional audio component from a set of audio source properties for the first audio source category. The apparatus may provide very advantageous categorization and characterization of individual audio sources/components present in a multi-channel signal. This may be advantageous e.g. for visualization of audio events.

Abstract: A system configured to improve sound source localization (SSL) processing by reducing a number of direction vectors and grouping the direction vectors into direction cells is provided. The system performs clustering to generate a smaller set of direction vectors included in a delay-direction codebook, reducing a size of the codebook to the number of unique delay vectors. In addition, the system groups the direction vectors into direction cells having a regular structure (e.g., predetermined uniformity and/or symmetry), which simplifies SSL processing and results in a substantial reduction in computational cost. The system may also select between multiple codebooks and/or dynamically adjust the codebook to compensate for changes to the microphone array. For example, a device with a microphone array fixed to a display that can tilt may adjust the codebook based on a tilt angle of the display to improve accuracy.

Abstract: An audio signal processing method and apparatus for adaptively adjusting a decorrelator. The method comprises obtaining a control parameter and calculating mean and variation of the control parameter. Ratio of the variation and mean of the control parameter is calculated, and a decorrelation parameter is calculated based on the said ratio. The decorrelation parameter is then provided to a decorrelator.

Abstract: Provided is an information processing device comprising an acquisition unit configured to acquire acoustic characteristics in a frequency domain based on a sound wave propagating in a head of a user and an extracting unit configured to generate a first frequency response function having a rational polynomial equation to extract feature quantity used for biometric authentication of the user based on the first frequency response function, the rational polynomial equation including terms indicating feature of a peak of the acoustic characteristics in a denominator and terms indicating feature of a notch of the acoustic characteristics in a numerator.

Abstract: An apparatus for reproducing a spatially extended sound source having a defined position and geometry in a space includes an interface for receiving a listener position; a projector for calculating a projection of a two-dimensional or three-dimensional hull associated with the spatially extended sound source onto a projection plane using the listener position, information on the geometry of the spatially extended sound source, and information on the position of the spatially extended sound source; a sound position calculator for calculating positions of at least two sound sources for the spatially extended sound source using the projection plane; and a renderer for rendering the at least two sound sources at the positions to obtain a reproduction of the spatially extended sound source having two or more output signals, wherein the renderer is configured to use different sound signals for the different positions.

Abstract: An apparatus, method and computer program is described comprising: providing an incoming audio indication in response to incoming audio (41), the incoming audio indication comprising visual representations of a plurality of audio modes (55-58); receiving at least one input from a user (59) for selecting one of the plurality of audio modes (42); and rendering audio (43) based, at least partially, on the selected audio mode, wherein one or more parameters of the rendered audio are determined based on the selected audio mode.

Abstract: A wearable device for attachment to the ear of a user can comprise an earpiece including a speaker and a body section including a hook for attachment about the ear of a user. The length of the earpiece can be adjusted. The earpiece can rotate relative to the body section. The point of rotation can be located within a region defined by the perimeter of the concha of the ear of a user. The wearable device can comprise magnetic elements configured to magnetically couple through the user's ear to retain the wearable device in place. A magnetometer which is configured and arranged to detect a degree of magnetic coupling between the magnetic elements is disclosed.

Abstract: An apparatus including circuitry configured for: defining at least one ambience audio representation, the ambience audio representation includes at least one respective diffuse background audio signal and at least one parameter, the at least one parameter associated with the at least one respective diffuse background audio signal and further associated with at least one frequency range or at least one part of the frequency range, at least one time period or at least one part of the time period and a directional range for a defined position within an audio field, wherein the at least one ambience component representation is configured to be used in rendering an ambiance audio signal by a 6-degrees-of-freedom or enhanced 3-degrees-of-freedom Tenderer by processing, based on the at least one ambience audio representation and a listener position and/or direction, the respective diffuse background audio signal.

Abstract: A system for sound localization can include a first electronic device having a microphone to detect a sound, and a second electronic device. A processor can be in communication with the first electronic device and the second electronic device. The processor can receive a first signal from the first electronic device corresponding to the detected sound, determine a location of origin of the detected sound based at least in part on the first signal, and provide a second signal to the second electronic device based at least in part on the location of origin.

Abstract: A microphone device comprising, for example, a mid microphone cartridge and two side microphone cartridges. The mid microphone cartridge may be, for example, a cardioid microphone cartridge, and the side microphone cartridges may each be, for example, a bidirectional microphone cartridge. Each of the mid microphone cartridge and of the two side microphone cartridges may be orthogonal to the other two microphone cartridges. The microphone device, which may be referred to herein as a mid dual-side microphone, may provide a combined pickup pattern, such as a beam and/or a toroid, that may be steerable.

Abstract: A system including an audio source device having a first microphone and a first speaker for directing sound into an environment in which the audio source device is located and a wireless audio receiver device having a second microphone and a second speaker for directing sound into a user's ear. The audio source device is configured to 1) capture, using the firs microphone, speech of the user as a first audio signal, 2) reduce noise in the first audio signal to produce a speech signal, and 3) drive the first speaker with the speech signal. The wireless audio receiver device is configured to 1) capture, using the second microphone, a reproduction of the speech produced by the first speaker as a second audio signal and 2) drive the second speaker with the second audio signal to output the reproduction of the speech.

Abstract: In some embodiments, methods and systems for combining a prerecorded performance with a live performance within a space (such as a vehicle) are disclosed. A first performance (which may be a prerecorded performance) may be started within the space, and a second performance (such as a live performance) may subsequently be initiated within the space as well. The second performance may be detected, and based upon the detection, one or more volume parameters of the first performance may be modified. One or more properties of the second performance may also be modified, and the modified first performance may then be combined with the modified second performance to create a combined performance.

Abstract: Various implementations include approaches for sound enhancement in far-field pickup. Certain implementations include a method of sound enhancement for a system including microphones for far-field pick up. The method can include: generating, using at least two microphones, a primary beam focused on a previously unknown desired signal look direction, the primary beam producing a primary signal configured to enhance the desired signal; generating, using at least two microphones, a reference beam focused on the desired signal look direction, the reference beam producing a reference signal configured to reject the desired signal; and removing, using at least one processor, components that correlate to the reference signal from the primary signal.

Abstract: A first audio apparatus generates a data signal comprising data for an audio scene, the data comprising input audio source data for at least a first audio source and acoustic object data for at least one acoustic object in the audio scene, the acoustic object data comprising acoustic coupling data and spatial property data for the acoustic object. A second audio apparatus comprises a receiver (201) for receiving the signal. A generator (205) generates object audio source data for an object audio source representing audio emitted in the audio scene by the acoustic object from coupling of audio from the first audio source. The generator (205) is arranged to generate the object audio source data in response to the acoustic coupling data, the spatial property data, and the input audio source data. A renderer (203) renders the audio scene, the rendering including rendering the object audio source data.

Abstract: Example embodiments relate to vehicle sensor modules with external audio receivers. An example sensor module may include sensors and can be coupled to a vehicle's roof with a first microphone positioned proximate to the front of the sensor module. The sensor module can also include a second microphone extending into a first side of the sensor module such that the second microphone is configured to detect audio originating from an environment located relative to a first side of the vehicle and a third microphone extending into a second side of the sensor module such that the third microphone is configured to detect audio originating from the environment located relative to a second side of the vehicle, wherein the second side is opposite of the first side.

Abstract: A digital stethoscope includes a stethoscope housing defining a housing edge. The digital stethoscope also includes a surface region secured to the stethoscope housing at the housing edge, and a number of microphones. The digital stethoscope also includes a processing device disposed within the stethoscope housing and in communication with the microphones. The processing device receives the digital audio data from the microphones.

Abstract: A system includes multiple microphone arrays positioned at different locations on a roof of an autonomous vehicle. Each microphone array includes two or more microphones. Internal clocks of each microphone array are synchronized by a processor and used to generate timestamps indicating when microphones capture a sound. Based on the timestamps, the processor is configured to localize a source of the sound.

Abstract: An apparatus comprising means for: capturing an audio scene using multiple microphones; determining that the captured audio scene has unacceptable detected noise; in dependence upon determining that the captured audio scene has unacceptable detected noise, searching both different sets of one or more microphones and different physical rotation angles of the microphones to find a combination of a first set of one or more microphones and a first physical rotation angle of the microphones that captures the audio scene with acceptable detected noise; and controlling the physical rotation angle of the microphones to be the first physical rotation angle of the microphones and capturing the audio scene using the combination of the first set of one or more microphones and the first physical rotation angle of the microphones.

Abstract: An electronic device comprising: a microphone array including at least three microphones; and at least one processor configured to: identify a kind of an application that is executed; activate one or more of the microphones in the array based on each microphone's respective position within the electronic device and the type of the application; and capture audio using the activated microphones.

Abstract: A method and apparatus (100) are provided for detecting tiredness of a vehicle driver. The apparatus (100) is configured to receive a signal from at least one microphone (104), to acquire a time characteristic of yawning actions in the signal, and to use an analysis of the time characteristic to detect or not detect a tiredness of the driver (106) from a frequency of yawning, a yawn intensity and/or a temporal compression between successive yawning actions.