公开(公告)号：US11778374B2

公开(公告)日：2023-10-03

申请号：US17666604

申请日：2022-02-08

Applicant: GN Audio A/S

Inventor： Rasmus Kongsgaard Olsson ,  Thomas Fuglsang

IPC: H04R3/00 ,  G06N3/08 ,  G10L25/30 ,  G10L25/78 ,  H04L65/403 ,  H04M3/56 ,  H04R1/40 ,  G10L25/18 ,  H04L65/1089

CPC classification number: H04R3/005 ,  G06N3/08 ,  G10L25/18 ,  G10L25/30 ,  G10L25/78 ,  H04L65/1089 ,  H04L65/403 ,  H04M3/568 ,  H04R1/406 ,  H04M2201/40 ,  H04R2201/401

Abstract: A conference device and a computer-implemented method for training a neural network are disclosed, the conference device comprising a conference controller; a microphone array comprising a plurality of microphones for provision of audio signals representing audio from one or more sound sources; a direction estimator connected to the conference controller and the microphone array, the direction estimator configured to obtain, from the microphone array, a plurality of audio signals including a first audio signal and a second audio signal; determine direction data based on the plurality of audio signals, the direction data comprising an indication of an estimated probability of voice activity for one or more directions, wherein to determine direction data comprises to apply an offline-trained neural network; and output audio data based on the direction data to the conference controller.

公开(公告)号：US11902758B2

公开(公告)日：2024-02-13

申请号：US16718651

申请日：2019-12-18

Applicant: GN Audio A/S

Inventor： Rasmus Kongsgaard Olsson

IPC: H04R3/04 ,  G10L25/18 ,  H04R1/40 ,  H04R3/00

CPC classification number: H04R3/04 ,  G10L25/18 ,  H04R1/406 ,  H04R3/005

Abstract: A method comprising: at an electronic device (100) having an array microphones (101) with a plurality of microphones and a processor (102): receiving a plurality of microphone signals (x1, x2, x3) from the plurality of microphones; generating a processed signal (XP) from the plurality of microphone signals using one or both of beamforming and deconvolution; generating a compensated processed signal (XO) by compensating the processed audio signal (XP) in accordance with compensation coefficients (Z). Generating the compensated processed signal comprises: generating first spectrum values (PXP) from the processed audio signal; generating reference spectrum values ( ) from multiple second spectrum values (PX1, PX2, PX3) generated from each of at least two of the microphone signals in the plurality of microphone signals (x1, x2, x3); and generating the compensation coefficients (Z) from the reference spectrum values ( ) and the first spectrum values (PXP).
The compensation may improve undesired effects related to e.g. coloration at the output of multi-microphone systems involving e.g. one or both of beamforming and deconvolution of microphone signals from a microphone array.

公开(公告)号：US20220272447A1

公开(公告)日：2022-08-25

申请号：US17666604

申请日：2022-02-08

Applicant: GN Audio A/S

Inventor： Rasmus Kongsgaard Olsson ,  Thomas Fuglsang

IPC: H04R3/00 ,  G10L25/78 ,  G10L25/30 ,  H04R1/40 ,  G10L25/18 ,  H04L65/1089 ,  H04L65/403 ,  H04M3/56 ,  G06N3/08

Abstract: A conference device and a computer-implemented method for training a neural network are disclosed, the conference device comprising a conference controller; a microphone array comprising a plurality of microphones for provision of audio signals representing audio from one or more sound sources; a direction estimator connected to the conference controller and the microphone array, the direction estimator configured to obtain, from the microphone array, a plurality of audio signals including a first audio signal and a second audio signal; determine direction data based on the plurality of audio signals, the direction data comprising an indication of an estimated probability of voice activity for one or more directions, wherein to determine direction data comprises to apply an offline-trained neural network; and output audio data based on the direction data to the conference controller.

公开(公告)号：US20230206936A1

公开(公告)日：2023-06-29

申请号：US18062815

申请日：2022-12-07

Applicant: GN Audio A/S

Inventor： Clément Laroche ,  Pejman Mowlaee ,  Rasmus Kongsgaard Olsson

IPC: G10L21/0208

CPC classification number: G10L21/0208 ,  G10L2021/02082

Abstract: An audio device and related methods for speech quality detection are disclosed, the audio device comprising an interface, a processor, a memory and one or more microphones, wherein the audio device is configured to obtain, via the interface, a microphone input signal from one or more microphones including a first microphone; process the microphone input signal for provision of an output signal; determine, using a non-intrusive quality detection model, one or more quality parameters including a first quality parameter indicative of a speech quality associated with the output signal; control processing of the microphone input signal based on the first quality parameter; and transmit, via the interface, the output signal.

公开(公告)号：US10299027B2

公开(公告)日：2019-05-21

申请号：US16027809

申请日：2018-07-05

Applicant: GN Audio A/S

Inventor： Rasmus Kongsgaard Olsson

IPC: H04R1/10 ,  G10L25/78

Abstract: A headset with an electro-acoustic input transducer arranged to pick up an acoustic signal and convert the acoustic signal to an electric signal. Based on processing a portion of the electric signal, the voice activity detector is configured to: detect proximal voice activity, distal voice activity and no voice activity, at times when respectively present in the acoustic signal picked up by the electro-acoustic transducer, and to select a respective mode, the selection of which is encoded in the control signal. The first processor is controlled by the voice activity detector to reduce, in the output signal, intelligibility of distal voice activity at least at portions of time periods when the control signal indicates the mode of presence of distal voice activity.

公开(公告)号：US10262676B2

公开(公告)日：2019-04-16

申请号：US16012263

申请日：2018-06-19

Applicant: GN Audio A/S

Inventor： Rasmus Kongsgaard Olsson

IPC: H04R1/04 ,  H04R1/08 ,  H04R1/40 ,  H04R3/00 ,  G10L21/0232

Abstract: Disclosed is a method and a headset for reducing pop-noise in voice communication between a user and a far-end device. The headset has a first, a second and a third electro-acoustic input transducer for reception of audio input signals. The headset also has a first beamformer to provide a voice signal. The first beamformer is configured to optimize the voice-to-background noise ratio. The headset comprises a second beamformer configured for providing a pop-noise signal. The pop-noise signal is based on the first input signal from the first input transducer, the second input signal from the second input transducer, and a third input signal from the third input transducer. The second beamformer is adaptively configured to cancel voice and background noise while not cancelling pop-noise. The headset compares the pop-noise signal to the voice signal to determine time periods and frequency bands having pop-noise.