公开(公告)号：US20240169967A1

公开(公告)日：2024-05-23

申请号：US18427121

申请日：2024-01-30

Applicant: George A. Economou

Inventor： George A. Economou

IPC: G10K11/04 ,  G01H3/00 ,  H04R1/34

CPC classification number: G10K11/04 ,  G01H3/00 ,  H04R1/342

Abstract: This disclosure provides for an auditory modification apparatus to facilitate extraction of information from an auditory observation stream. The approach may be used to reveal features about the environment, or to simplify processing of the incoming audio stream. The apparatus acts on the incoming auditory stream by nature of its shape, and that shape either is passively static or actively manipulated. Preferably, the apparatus has given shape characteristics to reveal features of the environment, such as directionality of a noise, size of an enclosed space, or materials of its construction, that are not otherwise detectable or easy to process with conventional approaches. Further advantage exists in the notion of actively manipulating the shape of the apparatus in conjunction with its operation to facilitate information extraction in a dynamic manner.

公开(公告)号：US11862136B2

公开(公告)日：2024-01-02

申请号：US16626962

申请日：2016-04-19

Applicant: Lifan Huang

Inventor： Lifan Huang ,  Shuguang Wang

IPC: E04B1/86 ,  G10K11/168 ,  E04F13/075 ,  G10K11/172 ,  G10K11/04 ,  G10K11/28 ,  E04F13/08

CPC classification number: G10K11/168 ,  E04F13/075 ,  G10K11/04 ,  G10K11/172 ,  E04F13/0867

Abstract: The present invention relates to the acoustic metamaterial structural unit with the function of soundproof, flow-passing and heat-transferring enhancement, which comprises a frame, a constraint placed in the frame and a piece of membrane covering at least one surface of the frame; both the frame and the membrane are respectively placed at least one hole. Besides, the present invention also provides the acoustic metamaterial composite plate and the composite structure constructed with the acoustic metamaterial structural unit; the method for adjusting the frequency and the assemble method. The present structural unit possesses better soundproof property than the routine perforated plated or micro-perforated plate in broad operating frequency. And also the enough heat flow, gas flow or fluid flow can pass through smoothly. The diffuse efficiency of the heat energy of the mediums on both sides of the hole is increased by the vibration of the self-structure under the excitation of the soundwave and further the efficiency of heat exchange is accelerated. The method for assembling the acoustic metamaterial composite structure with the acoustic metamaterial structural units is simple. The operation performance is steady.

公开(公告)号：US20230343317A1

公开(公告)日：2023-10-26

申请号：US18176388

申请日：2023-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA ,  Japan Aerospace Exploration Agency

Inventor： Tatsuhiko GOTO ,  Akihiko ENAMITO ,  Kenichiro NAGAI ,  Osamu NISHIMURA ,  Takahiro HIRUMA ,  Tetsuya DOI ,  Keiichiro IWANAGA

IPC: G10K11/172 ,  G10K11/162

CPC classification number: G10K11/172 ,  G10K11/162 ,  G10K11/04

Abstract: According to one embodiment, a sound absorption device includes: a first plate having a plurality of first holes; a second plate facing the first plate in a first direction; a first frame connecting the first plate and the second plate; and a third plate supported by the first frame so as to vibrate in the first direction within the first frame. A first space is formed in the first frame between the first plate and the third plate. A second space is formed in the first frame between the second plate and the third plate. The third plate includes a first portion and a second portion, the second portion having a higher vibration speed than the first portion.

公开(公告)号：US20230260497A1

公开(公告)日：2023-08-17

申请号：US18303055

申请日：2023-04-19

Applicant: Pixie Dust Technologies, Inc.

Inventor： Yudai TAIRA ,  Masaki GOMI

IPC: G10K11/172 ,  G06F30/10

CPC classification number: G10K11/172 ,  G06F30/10 ,  G10K11/04

Abstract: A sound absorbing unit includes: a perforated plate that is a plate member having a plurality of holes; a first cavity extending in a first direction, the first cavity allowing sound waves to enter through a plurality of holes present in a first region of the perforated plate; and a second cavity extending substantially parallel to the first direction, the second cavity allowing sound waves to enter through a plurality of holes present in a second region of the perforated plate. The first cavity and the second cavity are arranged in a second direction perpendicular to the first direction. A surface of the perforated plate is orthogonal to neither the first direction nor the second direction. The first cavity and the second cavity have different lengths in the first direction.

公开(公告)号：US20180174566A1

公开(公告)日：2018-06-21

申请号：US15678625

申请日：2017-08-16

Applicant: Caterpillar Inc. ,  Brigham Young University

Inventor： David Charles Copley ,  Scott David Sommerfeldt ,  Matthew Franklin Calton

IPC: G10K11/04

CPC classification number: G10K11/04 ,  F01N1/02 ,  F01N1/023 ,  F02C7/045 ,  F02M35/1261 ,  G10K11/161 ,  G10K11/172

Abstract: A noise reduction system includes an enclosed system in which undesirable acoustic noise is generated by one or more associated noise-generating subsystems, and an acoustic resonator mounted on an exterior wall of the enclosed system, with an opening being defined through the exterior wall to allow for the passage of sound pressure waves from within the enclosed system to the acoustic resonator. The acoustic resonator includes a neck connected to the exterior wall at the opening and through which sound pressure waves from the enclosed system travel, at least two branches extending off from the neck, and a resonator connected to a distal end of each of the at least two branches.

公开(公告)号：US20180075836A1

公开(公告)日：2018-03-15

申请号：US15584786

申请日：2017-05-02

Applicant: Continental Automotive Systems, Inc.

Inventor： Matthew R. Kirsch ,  Guillaume Lamy ,  Bijal Joshi

IPC: G10K11/34 ,  G10K11/178 ,  G10K11/04 ,  A61B6/00

CPC classification number: G10K11/343 ,  A61B6/5264 ,  A61F2011/145 ,  G10K11/04 ,  G10K11/178 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/12821 ,  G10K2210/3016 ,  G10K2210/3051 ,  G10K2210/3056 ,  G10L21/0208

Abstract: A maximum noise suppression level (Gmin) is not a single constant value for an entire frequency range, but is allowed to vary across frequencies. The amount of variation is dynamically computed based on the input noise characteristics. For example, if there is excess noise in the lower frequency region, the maximum noise suppression level in that region will increase to suppress the noise in that frequency region. This feature can be enabled all the time, and will be active when the input conditions warrant extra noise suppression in a particular frequency region. Thus, the effort involved in manually tuning an audio system (e.g., hands-free telephony, voice-controlled automotive head unit, etc.) can be significantly reduced or eliminated.

公开(公告)号：US09915913B2

公开(公告)日：2018-03-13

申请号：US15275700

申请日：2016-09-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazuaki Takahata ,  Katsunori Yokoyama ,  Shinji Yamamoto ,  Rie Endo ,  Kazumasa Shibata ,  Hiroki Kasama

IPC: G03G21/16 ,  G10K11/172 ,  G10K11/04

CPC classification number: G03G21/1619 ,  G10K11/04 ,  G10K11/172

Abstract: An image forming apparatus includes a main body, a cover, a driving unit, and a film. The main body is configured to accommodate an image forming portion which forms an image on a recording material. The cover is provided on the main body and covers the image forming portion. The driving unit is provided on the main body and drives the image forming portion. The film is attached to the cover with a gap formed against an inner wall of the cover. The film faces the inner wall of the cover while a tension is given thereto and without coming into contact with the driving unit.

公开(公告)号：US09794386B2

公开(公告)日：2017-10-17

申请号：US15422415

申请日：2017-02-01

Applicant: Quiet, Inc.

Inventor： Scott A. Moser ,  Carlos Francisco Montoya-Mejia

IPC: H04M1/00 ,  H04M1/19 ,  H04M1/03 ,  H04M1/05 ,  G10K11/04 ,  H04R1/08

CPC classification number: H04M1/19 ,  G10K11/04 ,  G10K11/16 ,  G10K11/178 ,  G10K11/17861 ,  G10K11/17873 ,  G10K2210/108 ,  H04M1/035 ,  H04M1/05 ,  H04M1/17 ,  H04R1/083 ,  H04R1/1008 ,  H04R1/342 ,  H04R27/00 ,  H04R2201/107 ,  H04R2499/11 ,  H04R2499/13

Abstract: Disclosed is a telephone headset that features a metalized anechoic chamber so that noises provided therein can be combatted with antiphase noises. In some embodiment, the anechoic chamber may be constructed of metallic flake mixed into or with a sound attenuating or absorbing material like, for example, silicone. Suitably, the headset can be adjusted to fit an inclusive range of head dimensions comfortably, the headsets may be wired directly or connected wirelessly to the user's phone to ensure operation and communication.

公开(公告)号：US09779713B2

公开(公告)日：2017-10-03

申请号：US14614557

申请日：2015-02-05

Applicant: United Technologies Corporation

Inventor： Arthur Blanc ,  Joseph V. Mantese

IPC: G10K11/00 ,  G10K11/04

CPC classification number: G10K11/04

Abstract: An acoustic wave gate is provided. The gate includes one or more layers of metamaterial configured to be in a first state and a second state and configured to change from the first state to the second state when electrical and/or magnetic energy is applied thereto. The gate also includes at least one source configured in operational communication with the one or more layers and configured to supply at least one of electrical and magnetic energy to the one or more layers. The one or more layers are configured to (i) prevent the passage of acoustic energy through the one or more layers when in the first state and (ii) permit the passage of acoustic energy through the one or more layers when in the second state, wherein the one or more layers are configured to be stimulated in phase with the acoustic energy.

公开(公告)号：US09711126B2

公开(公告)日：2017-07-18

申请号：US14387127

申请日：2013-03-14

Applicant: The University of North Carolina at Chapel Hill

Inventor： Ravish Mehra ,  Dinesh Manocha

IPC: A63F13/00 ,  G10K11/04 ,  A63F13/54 ,  A63F13/60 ,  G06F17/50

CPC classification number: G10K11/04 ,  A63F13/54 ,  A63F13/60 ,  A63F2300/6081 ,  G06F17/5009

Abstract: The subject matter described herein includes an approach for wave-based sound propagation suitable for large, open spaces spanning hundreds of meters, with a small memory footprint. The scene is decomposed into disjoint rigid objects. The free-field acoustic behavior of each object is captured by a compact per-object transfer-function relating the amplitudes of a set of incoming equivalent sources to outgoing equivalent sources. Pairwise acoustic interactions between objects are cornuted analytically, yielding compact inter-object transfer functions. The global sound field accounting for all orders of interaction is computed using these transfer functions. The runtime system uses fast summation over the outgoing equivalent source amplitudes for all objects to auralize the sound field at a moving listener in real-time. We demonstrate realistic acoustic effects such as diffraction, low-passed sound behind obstructions, focusing, scattering, high-order reflections, and echoes, on a variety of scenes.