An apparatus includes a CPU and a memory storing a program that causes the apparatus to function as the following units. A first amplification unit that amplifies a the sound signal from a first microphone for acquiring an environment sound, a second amplification unit that amplifies a sound signal from a second microphone for acquiring a noise of a noise source in accordance with a amplification amount, a conversion unit that performs Fourier transform on sound signals from the first amplification unit and the second amplification unit, a reduction unit that reduces noise from first sound data using noise data. The amplification amount is set based on at least one of a level of the sound signal from the second amplification unit and a type of the noise source.

A sound processing apparatus includes a first microphone that acquires an environmental sound, a second microphone that acquires noise from a noise source, a first conversion unit that performs Fourier transform on a sound signal from the first microphone to generate first sound data, a second conversion unit that performs Fourier transform on a sound signal from the second microphone to generate second sound data, a first reduction unit that reduces noise from the noise source in the first sound data using noise data, a detection unit detects, based on the second sound data, that short-term noise from the noise source is included in the first sound data, a second reduction unit that controls a magnitude of sound data from the first reduction unit and reduces the short-term noise, and a third conversion unit that performs inverse Fourier transform on sound data from the second reduction unit.

A skin audible watch for orientation identification includes a dial (1) and a strap (2). A plurality of sound collection modules (3) are arranged along a circumference of the dial (1), and the sound collection modules (3) are sequentially connected with a digital filter (4), an analog-to-digital converter (5), a single-chip microcomputer (6), and a row and column drive module (7); the single-chip microcomputer (6) is also connected with vibration motors (8) and a gyroscope (9); a number of the vibration motors corresponds to a number of orientations; the digital filter (4), analog-to-digital converter, single-chip microcomputer, row and column drive module, the vibration motors and the gyroscope are located inside the dial; the row and column drive module is connected with a current contact pin (12), and a free end of the current contact pin extends out of a surface of the vibration motors.

A hearing device, e.g. a hearing aid, configured to be worn by a user, comprises a) two or more input transducers (e.g. microphones) wherein said two or more input transducers during use of the hearing device are arranged with a distance between them; b) a directional system comprising a directional algorithm configured to provide a directional pattern in dependence of said distance. The hearing device is configured to estimate a current value of said distance, or an equivalent acoustic delay, or beamformer weights of said directional system, thereby the directional performance can be optimized to the individual user.

The sound detection device comprises a substrate, an array of sound detectors in or on a surface of the substrate, a processing circuit coupled to the sound detectors, the processing circuit being configured to sum signals from the sound detectors with relative time delays or phase shifts that compensate for propagation delay of sound along the array in a sound propagation mode that is bound to said surface. In an embodiment the sound in said sound propagation mode is bound to the surface using an acoustic waveguide, wherein the surface of the substrate forms a part of the acoustic waveguide, the sound detection device comprising a wall facing the array of sound detectors, with a space between the surface of the substrate and the wall, the sound detection device comprising an opening that provides incoming sound from outside the device access to said space, for excitation of the wave in the bound propagation mode in the acoustic waveguide by sound from outside the device.

An audio capture device selects between multiple microphones to generate an output audio signal depending on detected conditions. The audio capture device determines whether one or more microphones are wet or dry and selects one or more audio signals from the one or more microphones depending on their respective conditions. The audio capture device generates a mono audio output signal or a stereo output signal depending on the respective conditions of the one or more microphones.

Audio device and method for operating an audio device is disclosed, the audio device comprising an interface, memory, and a processor, wherein the processor is configured to: obtain a first microphone input signal and a second microphone input signal; process the first microphone input signal and the second microphone input signal for provision of an output signal; and output the output signal. To obtain the first microphone input signal and the second microphone input signal comprises to: obtain a first microphone signal and a second microphone signal; determine a gain compensation scheme based on the first microphone signal and the second microphone signal; and compensate a gain of one or both of the first microphone signal and the second microphone signal in accordance with the gain compensation scheme for provision of the first microphone input signal and the second microphone input signal; wherein to determine the gain compensation scheme comprises to: apply a plurality of test compensation schemes to the first microphone signal and the second microphone signal; determine a performance parameter for each of the test compensation schemes; and select the gain compensation scheme based on the performance parameters.

A hearing device, e.g. a hearing aid, configured to be worn by a user, comprises a) two or more input transducers (e.g. microphones) wherein said two or more input transducers during use of the hearing device are arranged with a distance between them; b) a directional system comprising a directional algorithm configured to provide a directional pattern in dependence of said distance. The hearing device is configured to estimate a current value of said distance, or an equivalent acoustic delay, or beamformer weights of said directional system, thereby the directional performance can be optimized to the individual user.

Disclosed herein, among other things, are systems and methods for spatially differentiated noise reduction for hearing device applications. A method includes sensing sound signals with a hearing device. A front-facing directional beam and a rear-facing directional beam are produced using the sensed sound signals, and the front-facing directional beam and the rear-facing directional beam are combined to obtain an output directional beam. The front-facing directional beam or the output directional beam is compared to the rear-facing directional beam to determine a front-rear differential. Responsive to a determination that the front-rear differential indicates that the rear-facing directional beam is dominant, the amount of noise reduction of the output directional beam is increased. Responsive to a determination that the front-rear differential indicates that the rear-facing directional beam is not dominant, an amount of noise reduction of the output directional beam is reduced.

A first device includes a memory configured to store instructions and one or more processors configured to receive audio signals from multiple microphones. The one or more processors are configured to process the audio signals to generate direction-of-arrival information corresponding to one or more sources of sound represented in one or more of the audio signals. The one or more processors are also configured to and send, to a second device, data based on the direction-of-arrival information and a class or embedding associated with the direction-of-arrival information.