Title:
SYSTEMS AND METHODS FOR STABILIZING PLAYBACK DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/274399
Kind Code:
A1
Abstract:
A negative-stiffness audio transducer can include a frame, a voice coil, and a suspension assembly resiliently attaching the voice coil to the frame. The suspension assembly provides a negative stiffness to axial movement of the voice coil. The transducer further includes a diaphragm coupled to the voice coil such that the voice coil moves the diaphragm in an axially inward direction or an axially outward direction in response to an electrical signal. A stabilizer can be used to selectively move the diaphragm axially inward or outward to maintain the audio transducer in an operational state.
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Inventors:
SHEEN TIMOTHY W (US)
OSWAKS JONATHAN (US)
LIU LINDUO (US)
YANG MINQIANG (US)
EVERETT STEPHEN (US)
PEMBERTON-PIGOTT NIGEL (US)
AHRENS MICHAEL (US)
OSWAKS JONATHAN (US)
LIU LINDUO (US)
YANG MINQIANG (US)
EVERETT STEPHEN (US)
PEMBERTON-PIGOTT NIGEL (US)
AHRENS MICHAEL (US)
Application Number:
PCT/CN2022/103306
Publication Date:
January 05, 2023
Filing Date:
July 01, 2022
Export Citation:
Assignee:
SONOS INC (US)
LIU LINDUO (US)
LIU LINDUO (US)
International Classes:
H04R1/28
Domestic Patent References:
| WO2020115044A1 | 2020-06-11 | |||
| WO2016190957A1 | 2016-12-01 |
Foreign References:
| US20180063634A1 | 2018-03-01 | |||
| US20050244031A1 | 2005-11-03 | |||
| CN104796825A | 2015-07-22 | |||
| US20150117698A1 | 2015-04-30 | |||
| US20100172535A1 | 2010-07-08 |
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)
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