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1. WO2020193938 - NOISE CONTROL

Publication Number WO/2020/193938
Publication Date 01.10.2020
International Application No. PCT/GB2020/050442
International Filing Date 25.02.2020
IPC
A62B 18/00 2006.01
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
18Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes
G10K 11/178 2006.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
CPC
A62B 15/00
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
15Installations affording protection against poisonous or injurious substances, e.g. with separate breathing apparatus
A62B 18/003
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
18Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes ; or incorporating a pump or compressor for reducing the inhalation effort
003having means for creating a fresh air curtain
A62B 18/006
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
18Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes ; or incorporating a pump or compressor for reducing the inhalation effort
006with pumps for forced ventilation
G10K 11/178
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
G10K 11/17823
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1781characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
17821characterised by the analysis of the input signals only
17823Reference signals, e.g. ambient acoustic environment
G10K 11/17825
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1781characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
17821characterised by the analysis of the input signals only
17825Error signals
Applicants
  • DYSON TECHNOLOGY LIMITED [GB]/[GB]
Inventors
  • REID, Peter
  • DARLING, Philip
Agents
  • CHAPMAN, Alan
  • BOOTH, Andrew
  • MACPHERSON, Carolyn
  • HOBDAY, Duncan
  • MITCHELL, Joshua
  • MACKISACK, Anna
  • WARNER, Thomas
  • FOWLER, Maria
  • MACPHERSON, Craig
  • FORRESTER, Simon
Priority Data
1903971.822.03.2019GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) NOISE CONTROL
(FR) LUTTE CONTRE LE BRUIT
Abstract
(EN)
There is provided an ear cup (1100a, 1100b) comprising a housing (1101) containing a filter assembly and a motor-driven impeller (1109) for creating an airflow through the filter assembly (1112), the housing (1101) comprising an air outlet (1111) downstream from the filter assembly (1112) for emitting the filtered airflow from the housing (1101). The ear cup (1100) further comprises an acoustic driver (1105) mounted to the housing (1101), a reference internal noise sensor (1106) disposed within the housing (1101) and a reference ambient noise sensor (1108) mounted to the housing (1101). The ear cup (1100) further comprises active noise control circuitry (ANC) that is configured to simultaneously use both a signal provided by the reference internal noise sensor (1106) and the signal provided by the reference ambient noise sensor (1108) to operate the acoustic driver (1105).
(FR)
La présente invention concerne une oreillette (1100a, 1100b) comprenant un boîtier (1101) contenant un ensemble filtre et une roue entraînée par un moteur (1109) pour créer un flux d'air à travers l'ensemble filtre (1112), le boîtier (1101) comprenant une sortie d'air (1111) en aval de l'ensemble filtre (1112) pour émettre le flux d'air filtré à partir du boîtier (1101). L'oreillette (1100) comprend en outre un pilote acoustique (1105) monté sur le boîtier (1101), un capteur de bruit interne de référence (1106) disposé à l'intérieur du boîtier (1101) et un capteur de bruit ambiant de référence (1108) monté sur le boîtier (1101). L'oreillette (1100) comprend en outre un circuit de commande de bruit actif (ANC) qui est configuré pour utiliser simultanément à la fois un signal fourni par le capteur de bruit interne de référence (1106) et le signal fourni par le capteur de bruit ambiant de référence (1108) pour faire fonctionner le pilote acoustique (1105).
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