公开(公告)号：US11758322B2

公开(公告)日：2023-09-12

申请号：US17515916

申请日：2021-11-01

Applicant: YAMAHA CORPORATION

Inventor： Satoshi Ukai

IPC: H04R1/40 ,  G10K11/178 ,  H04R3/00

CPC classification number: H04R1/40 ,  G10K11/1785 ,  H04R3/005

Abstract: A sound pickup method includes splitting a sound pickup signal of a microphone of which sound pickup in a predetermined range is blocked by an acoustic obstacle, into a plurality of sound pickup signals and subjecting at least one sound pickup signal among the plurality of sound pickup signals to band limitation processing, and comparing characteristic amounts of the plurality of sound pickup signals including the sound pickup signal after being subjected to the band limitation processing and controlling a gain of the microphone in accordance with a result of comparing the characteristic amounts.

公开(公告)号：US20230282195A1

公开(公告)日：2023-09-07

申请号：US18144308

申请日：2023-05-08

Applicant: ACOUSTIC METAMATERIALS LLC

Inventor： Gopal Prasad Mathur

IPC: G10K11/178

CPC classification number: G10K11/1785 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K11/17881

Abstract: An active acoustics management system for the loudspeaker back-enclosure, including a first loudspeaker having a front side and a back side connected by side walls, the front facing in a first direction, is presented. An enclosure surrounds a portion of the first loudspeaker, such that the enclosure is open about the front side of the first loudspeaker and is closed about the side walls and the back side of the loudspeaker. A second loudspeaker is disposed within the enclosure behind the first loudspeaker, the second loudspeaker being oriented to output waveforms in the first direction, wherein the second loudspeaker is adapted to output waveforms in the first direction thereby to cancel at least some waveforms emanating from the back side of the first loudspeaker, using active control strategies.

公开(公告)号：US11741936B2

公开(公告)日：2023-08-29

申请号：US17401667

申请日：2021-08-13

Applicant: Department of the Army

Inventor： Jackson Yeboah

IPC: H04B1/00 ,  G10K11/178 ,  B64C39/02 ,  H04R3/00 ,  B64U20/10 ,  B64U50/14

CPC classification number: G10K11/1785 ,  B64C39/024 ,  B64C2220/00 ,  B64U20/10 ,  B64U50/14 ,  G10K2210/1281

Abstract: An advanced acoustic awareness platform configured to classify environmental sounds. The advanced acoustic awareness platform comprises an audio signal acquisition sensor array and one or more processors programmed to augment the audio signal, extract features for the audio signal, visualize, and classify the signal using one or more labels. In at least one embodiment, the signal is classified based on transfer learning associated with a pretrained machine learning model.

公开(公告)号：US11721314B2

公开(公告)日：2023-08-08

申请号：US17492743

申请日：2021-10-04

Applicant: Acoustic Metamaterials LLC

Inventor： Gopal Prasad Mathur

IPC: G10K11/178

CPC classification number: G10K11/1785 ,  G10K11/17881 ,  G10K2210/3026 ,  G10K2210/3027

Abstract: An active acoustics management system for the loudspeaker back-enclosure, including a first loudspeaker having a front side and a back side connected by side walls, the front facing in a first direction, is presented. An enclosure surrounds a portion of the first loudspeaker, such that the enclosure is open about the front side of the first loudspeaker and is closed about the side walls and the back side of the loudspeaker. A second loudspeaker is disposed within the enclosure behind the first loudspeaker, the second loudspeaker being oriented to output waveforms in the first direction, wherein the second loudspeaker is adapted to output waveforms in the first direction thereby to cancel at least some waveforms emanating from the back side of the first loudspeaker, using active control strategies.

公开(公告)号：US20230169949A1

公开(公告)日：2023-06-01

申请号：US17538045

申请日：2021-11-30

Applicant: Harman International Industries, Incorporated

Inventor： Geon-Seok KIM ,  Rajeshkumar VENUGOPAL ,  Tao FENG

IPC: G10K11/178

CPC classification number: G10K11/1785 ,  G10K11/17823 ,  G10K11/17873 ,  G10K2210/1282

Abstract: In at least one embodiment, a system for providing a frequency dependent dynamic leakage for noise cancellation is provided. The system includes a noise cancellation controller and a current limiter. The noise cancellation controller is programmed to perform noise cancellation in a vehicle based on a limited input signal. The current limiter is programmed to receive a reference signal from one of an accelerometer or a loudspeaker and to convert the reference signal from a time domain and into a frequency domain to limit the reference signal. The current limiter is further programmed to generate the limited input signal in response to limiting the reference signal.

公开(公告)号：US20180190282A1

公开(公告)日：2018-07-05

申请号：US15639826

申请日：2017-06-30

Applicant: QUALCOMM Incorporated

Inventor： Asif Iqbal Mohammad ,  Sreekanth Narayanaswamy ,  Rishabh Tyagi ,  Erik Visser

IPC: G10L15/22 ,  G10L25/84 ,  G10K11/178 ,  G06F3/16 ,  H04R1/40 ,  H04R3/00

CPC classification number: G10L15/22 ,  B60R16/0373 ,  G06F3/167 ,  G10K11/178 ,  G10K11/1785 ,  G10K11/17881 ,  G10K2210/111 ,  G10K2210/1282 ,  G10K2210/3011 ,  G10K2210/3044 ,  G10L21/0208 ,  G10L25/84 ,  G10L2015/223 ,  H04R1/406 ,  H04R3/005 ,  H04R29/004 ,  H04R2410/05 ,  H04R2499/13

Abstract: A vehicle includes an interface device, an in-vehicle control unit, a functional unit, and a processing circuitry. The interface device receives a spoken command to identify an in-cabin vehicle zone of two or more in-cabin vehicle zones of the vehicle, and receives background audio data concurrently with a portion of the spoken command. The in-cabin vehicle control unit separates the background audio data from the spoken command, and selects which in-cabin vehicle zone of the two or more in-cabin vehicle zones is identified by the spoken command. The functional unit controls a function within the vehicle. The processing circuitry stores, to a command buffer, data processed from the received spoken command, and controls, based on the data processed from the received spoken command, the functional unit using audio input received from the selected in-cabin vehicle zone.

公开(公告)号：US10013964B1

公开(公告)日：2018-07-03

申请号：US15682756

申请日：2017-08-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Eli Tzirkel-Hancock ,  Ilan Malka ,  Scott M. Reilly ,  Frank C. Valeri

IPC: G10K11/178 ,  H04R5/02

CPC classification number: G10K11/178 ,  G10K11/1785 ,  G10K11/17881 ,  G10K11/17883 ,  G10K2210/1282 ,  G10K2210/3016 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3046 ,  G10K2210/3226 ,  H04R3/12 ,  H04R5/02 ,  H04R2499/13

Abstract: A system and method for controlling noise originating from a source external to a vehicle is disclosed. The method includes determining, by an active noise controller of a vehicle, characteristics of an unwanted noise. The unwanted noise originates from a source external to the vehicle. The method also includes determining an inverted noise based on the characteristics of the unwanted noise. The method also includes projecting the inverted noise. The projected inverted noise destructively interferes with the unwanted noise. The method also includes receiving a residual noise via an error microphone. The error microphone is configured to generate a signal based on the received residual noise.

公开(公告)号：US20180166062A1

公开(公告)日：2018-06-14

申请号：US15837952

申请日：2017-12-11

Applicant: The Research Foundation for The State University of New York

Inventor： Steven M. Hoffberg

IPC: G10K11/178 ,  H04K3/00

CPC classification number: G10K11/1785 ,  G10K11/18 ,  G10K15/04 ,  G10K2210/3044 ,  H04K3/00 ,  H04K3/65 ,  H04K3/68 ,  H04K3/82 ,  H04K3/825 ,  H04K3/84 ,  H04K2203/12

Abstract: A metamaterial comprising, a plurality of acoustic vector field sensors, each configured to sense an acoustic vector field of a fluid within a fluid-filled space in response to fluid waves, and producing an electrical signal corresponding to the sensed acoustic vector field; a processor configured to perform a time and space transform on the electrical signal; and at least one phased array transducer, configured to emit fluid waves according to a produced acoustic vector field pattern dependent on a result of the time and space transform, a within a portion of the fluid.

公开(公告)号：US09852726B2

公开(公告)日：2017-12-26

申请号：US15056921

申请日：2016-05-11

Applicant: Motorola Mobility LLC

Inventor： Snehitha Singaraju

IPC: H04B15/00 ,  G10K11/178

CPC classification number: G10K11/1785 ,  G10K11/17885 ,  G10K2210/108 ,  G10K2210/3056

Abstract: A method and apparatus are for determining one or more background noise characteristics, determining one or more incoming audio characteristics; and generating a combined audio signal comprising an active noise cancellation (ANC) component and a modified incoming audio (MIA) component. The ANC component is determined based on at least one of the one or more incoming audio characteristics and the background noise characteristics. Each of a limit of the ANC component and a limit of the MIA component is dynamically controlled to be less than or equal to a system limit, wherein a limit of the combined signal is approximately at the system limit.

公开(公告)号：US20170358290A1

公开(公告)日：2017-12-14

申请号：US15523993

申请日：2015-10-28

Applicant: EMERSON ELECTRIC CO.

Inventor： Samuel ALBERTS ,  Thomas R. BERGER

IPC: G10K11/178 ,  B02C18/22 ,  E03C1/266 ,  B02C18/00 ,  B02C18/16

CPC classification number: B02C18/0092 ,  B02C18/16 ,  B02C18/2225 ,  E03C1/2665 ,  G10K11/175 ,  G10K11/178 ,  G10K11/1785 ,  G10K11/17881 ,  G10K2210/105 ,  G10K2210/119 ,  G10K2210/121

Abstract: A food waste disposer system (300) has active noise control of food waste disposer noise that is generated by the food waste disposer (302) when a motor of the food waste disposer (302) is running. The food waste disposer (302) has a food conveying section that conveys food waste to a grinding section. The grinding section has a rotatable shredder plate that is rotated by a motor of a motor section. Active noise sound waves (310) are radiated into an area (313) where the food waste disposer noise is to be controlled at an amplitude and frequency to at least cancel or mask the food waste disposer noise.