The disclosed computer-implemented method may include accessing environment information identifying an undesired sound source within an environment. The method may further include determining, based on the accessed environment information, a spatial location of the undesired sound source in the environment that is to be attenuated using an active noise cancelling (ANC) signal. The method may also include forming a microphone beam, using two or more microphones, directed at the determined spatial location, where the microphone beam is configured to capture audio information from the determined spatial location. Still further, the method may include generating an ANC signal using the audio information captured using the microphone beam, and playing back the generated ANC signal to attenuate the undesired sound source at the determined spatial location. Various other methods, systems, and computer-readable media are also disclosed.

A collaborative distributed microphone array is configured to perform or be used in sound quality operations. A distributed microphone array can be operated to provide sound quality operations including sound suppression operations and speech intelligibility operations for multiple users in the same environment.

A method performed by an in-ear headphone that includes a speaker and an internal microphone. The method receives a microphone signal from the internal microphone that indicates a current sound pressure level (SPL) in an ear canal of a user. The current SPL is a result of a control leak from the in-ear headphone into an ambient environment that reduces a SPL in the ear canal between 2 dB and 25 dB at a frequency within a frequency range than if otherwise not present. The method determines an active noise cancellation (ANC) filter based on the microphone signal and generates an anti-noise signal using the ANC filter. The method drives the speaker using the anti-noise signal to reduce the current SPL in the ear canal of the user as much as 25 dB at a frequency within the frequency range.

An information processing apparatus including a noise reduction unit that reduces noise generated from an unmanned aerial vehicle, included in an audio signal picked up by a microphone mounted on the unmanned aerial vehicle, on the basis of state information on a noise source.

A method for eliminating a specific object voice and an ear-wearing audio device using the same are provided. The ear-wearing audio device includes a plurality of voice receiving units, a voice direction tracking unit, a direction enhancement unit, a window cutting unit, a voiceprint recognition unit, a voice cancellation unit and two speakers. The voice receiving units are arranged in an array to obtain a sound signal. The voice direction tracking unit is configured to track a plurality of sound sources to obtain a plurality of sound source directions. The voiceprint recognition unit determines whether the sound signal contains a specific object voice in each of the sound source directions. If the sound signal contains the specific object voice in one of the sound source directions, the voice cancellation adjusts a field pattern using a beamforming technique to eliminate the specific object voice.

A method for eliminating a specific object voice and an ear-wearing audio device using the same are provided. The ear-wearing audio device includes a plurality of voice receiving units, a voice direction tracking unit, a direction enhancement unit, a window cutting unit, a voiceprint recognition unit, a voice cancellation unit and two speakers. The voice receiving units are arranged in an array to obtain a sound signal. The voice direction tracking unit is configured to track a plurality of sound sources to obtain a plurality of sound source directions. The voiceprint recognition unit determines whether the sound signal contains a specific object voice in each of the sound source directions. If the sound signal contains the specific object voice in one of the sound source directions, the voice cancellation adjusts a field pattern using a beamforming technique to eliminate the specific object voice.

An active sound barrier has at least one passive sound absorber at or near a boundary location. A microphone provides an output to a frequency division module, in which a plural of frequencies are filtered to provide outputs corresponding to frequency segments of the receiving transducer output at respective ones of the frequencies. An active driving circuit drives plural speakers or output transducers at respective ones of the frequencies, with at least a subset of the speakers or output transducers at or close to the barrier. The speakers or output transducers cooperate with the passive sound absorber to reduce noise across a wide frequency band as well as to effect an electrically switchable soft boundary.

A vehicle includes a cabin, an internal-loudspeaker set an external-microphone set, and a signal processor that filters a raw audio signal that has been received by the external-microphone set broadcasts the resulting filtered audio signal into the cabin using the internal-loudspeaker set.

Devices, methods, systems, and media for selectively cancelling sounds at a listener's location are described. Sound sources are identified in the listener's environment using microphones and/or remote devices associated with specific sound sources. A user is presented with information identifying the sound sources, including spatial information, and prompting the user to select one or more of the sound sources. After the user designates a sound source as noise, microphones are used to monitor for sound originating from the designated sound source, and the audio information captured by the microphones is processed to generate an anti-noise signal presented to the listener to cancel sounds originating from the selected sound source. A user may designate multiple sound sources as noise and leave other sound sources unfiltered. The techniques may be used in single-listener and multi-listener applications, and in listening and speaking applications.

An active noise reducing earphone includes a rigid cup-like shell having an inner surface and an outer surface is provided. The inner surface encompasses a cavity with an opening, and a microphone arrangement is configured to pick up sound with at least one steerable beam-like directivity characteristic, and to provide a first electrical signal that represents the picked-up sound. The earphone further includes an active noise control filter configured to provide, based on the first electrical signal, a second electrical signal, and a speaker disposed in the opening of the cavity and configured to generate sound from the second electrical signal. The active noise control filter has a transfer characteristic that is configured so that noise that travels through the shell from beyond the outer surface to beyond the inner surface is reduced by the sound generated by the speaker.