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1. WO2020112653 - COAXIAL WAVEGUIDE

Publication Number WO/2020/112653
Publication Date 04.06.2020
International Application No. PCT/US2019/063042
International Filing Date 25.11.2019
IPC
H04R 1/24 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
24Structural combinations of separate transducers or of parts of the same transducer and responsive respectively to two or more frequency ranges
H04R 1/32 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
32for obtaining desired directional characteristic only
CPC
H04R 1/24
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
24Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
H04R 1/2811
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
2807Enclosures comprising vibrating or resonating arrangements
2811for loudspeaker transducers
H04R 1/323
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
32for obtaining desired directional characteristic only
323for loudspeakers
Applicants
  • BOSE CORPORATION [US]/[US]
Inventors
  • ZASTOUPIL, Greg Joseph
  • KUTIL, Joseph J.
  • MURRAY, Garbriel Lloyd
Agents
  • BRYAN, Timothy M.
Priority Data
16/205,38830.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COAXIAL WAVEGUIDE
(FR) CONVERTISSEUR DE GUIDE D'ONDES COAXIAL
Abstract
(EN)
Various implementations include loudspeakers. In some particular cases, a loudspeaker includes: a high frequency (HF) driver; a low frequency (LF) driver coaxially arranged with the HF driver; and a waveguide overlying a sound radiating surface of the LF driver, the waveguide having a hole pattern such that a sound radiation pattern of the LF driver matches a sound radiation pattern of the HF driver at a reference location.
(FR)
Divers modes de réalisation comprennent des haut-parleurs. Dans certains cas particuliers, un haut-parleur comprend : un Pilote haute fréquence (HF); un Pilote basse fréquence (LF) disposé Coaxialement avec le pilote HF; et un guide d'ondes Recouvrant une surface de rayonnement sonore du pilote LF, le guide d'ondes ayant un motif de trous de telle sorte Qu'un motif de rayonnement sonore Du pilote LF correspond à un motif de rayonnement sonore du pilote HF à un emplacement de référence.
Also published as
Latest bibliographic data on file with the International Bureau