LOW-LATENCY NOISE SUPPRESSION
    1.
    发明公开

    公开(公告)号:US20240331716A1

    公开(公告)日:2024-10-03

    申请号:US18611308

    申请日:2024-03-20

    CPC classification number: G10L21/0224 G06F1/163 G10L21/0232 G10L2021/02166

    Abstract: A device includes one or more processors configured to obtain audio data representing one or more audio signals. The audio data includes a first segment and a second segment subsequent to the first segment. The one or more processors are configured to perform one or more transform operations on the first segment to generate frequency-domain audio data. The one or more processors are configured to provide input data based on the frequency-domain audio data as input to one or more machine-learning models to generate a noise-suppression output. The one or more processors are configured to perform one or more reverse transform operations on the noise-suppression output to generate time-domain filter coefficients. The one or more processors are configured to perform time-domain filtering of the second segment using the time-domain filter coefficients to generate a noise-suppressed output signal.

    SYSTEMS, APPARATUS, AND METHODS FOR ACOUSTIC TRANSPARENCY

    公开(公告)号:US20210409860A1

    公开(公告)日:2021-12-30

    申请号:US17357019

    申请日:2021-06-24

    Abstract: Methods, systems, computer-readable media, and apparatuses for audio signal processing are presented. A device for audio signal processing includes a memory configured to store instructions and a processor configured to execute the instructions. When executed, the instructions cause the processor to receive an external microphone signal from a first microphone and produce a hear-through component that is based on the external microphone signal and hearing compensation data. The hearing compensation data is based on an audiogram of a particular user. The instructions, when executed, further cause the processor to cause a loudspeaker to produce an audio output signal based on the hear-through component.

    ACTIVE SELF-VOICE NATURALIZATION USING A BONE CONDUCTION SENSOR

    公开(公告)号:US20230276173A1

    公开(公告)日:2023-08-31

    申请号:US18167823

    申请日:2023-02-10

    CPC classification number: H04R3/04 H04R2460/13

    Abstract: Methods, systems, and devices for signal processing are described. Generally, as provided for by the described techniques, a wearable device to receive an input audio signal from one or more outer microphones, an input audio signal from one or more inner microphones, and a bone conduction signal from a bone conduction sensor based on the input audio signals. The wearable device may filter the bone conduction signal based on a set of frequencies of the input audio signals, such as a low frequency portion of the input audio signals. For example, the wearable device may apply a filter to the bone conduction signal that accounts for an error in the input audio signals. The wearable device may add a gain to the filtered bone conduction signal and may equalize the filtered bone conduction signal based on the gain. The wearable device may output an audio signal to a speaker.

    SYNCHRONIZED MODE TRANSITION
    4.
    发明申请

    公开(公告)号:US20210390941A1

    公开(公告)日:2021-12-16

    申请号:US17348646

    申请日:2021-06-15

    Abstract: Methods, systems, computer-readable media, devices, and apparatuses for synchronized mode transitions are presented. A first device configured to be worn at an ear includes a processor configured to, in a first contextual mode, produce an audio signal based on audio data. The processor is also configured to, in the first contextual mode, exchange a time indication of a first time with a second device. The processor is further configured to, at the first time, transition from the first contextual mode to a second contextual mode based on the time indication.

    SYSTEMS, APPARATUS, AND METHODS FOR ACOUSTIC TRANSPARENCY

    公开(公告)号:US20240080609A1

    公开(公告)日:2024-03-07

    申请号:US18506477

    申请日:2023-11-10

    Abstract: Methods, systems, computer-readable media, and apparatuses for audio signal processing are presented. A device for audio signal processing includes a memory configured to store audio data and a processor coupled to the memory. The processor is configured to use an adaptation filter to adapt update filter coefficients of an update filter. The update filter coefficients are adapted based on a difference between an internal microphone signal and an output of the adaptation filter. An input of the adaptation filter is based on an external microphone signal. The processor is also configured to output an output signal from a hear-through filter. The hear-through filter includes the update filter and the adaptation filter. The processor is further configured to cause a loudspeaker to produce an audio output signal based on the output signal of the hear-through filter.

    AUDIO PROCESSING BASED ON TARGET SIGNAL-TO-NOISE RATIO

    公开(公告)号:US20240334125A1

    公开(公告)日:2024-10-03

    申请号:US18323176

    申请日:2023-05-24

    CPC classification number: H04R3/04 G10L21/0216

    Abstract: A device includes one or more processors configured to obtain data specifying a target signal-to-noise ratio based on a hearing condition of a person and to obtain audio data representing one or more audio signals. The one or more processors are configured to determine, based on the target signal-to-noise ratio, a first gain to apply to first components of the audio data and a second gain to apply to second components of the audio data. The one or more processors are configured to apply the first gain to the first components of the audio data to generate a target signal and to apply the second gain to the second components of the audio data to generate a noise signal. The one or more processors are further configured to combine the target signal and the noise signal to generate an output audio signal.

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