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Acoustic transducer with passive diaphragm spatially integrated with active diaphragm

A technology for acoustic transducers and diaphragms, which is applied in the direction of transducer diaphragms, transducer shells/cabinets/brackets, diaphragm fixing/tightening, etc., and can solve problems such as electronic equipment not being provided to users

Active Publication Date: 2022-01-04
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a further consequence, some electronic devices do not provide the user with the same audio experience as more conventional, albeit larger, speakers

Method used

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  • Acoustic transducer with passive diaphragm spatially integrated with active diaphragm
  • Acoustic transducer with passive diaphragm spatially integrated with active diaphragm
  • Acoustic transducer with passive diaphragm spatially integrated with active diaphragm

Examples

Experimental program
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Embodiment Construction

[0035] Various principles related to acoustic transducers, and related methods and systems are described below with reference to specific embodiments. For example, certain aspects of the disclosed subject matter relate to acoustic transducers that include active diaphragms and passive diaphragms that are integrated with active diaphragms in a space-compact manner. As used herein, an "active diaphragm" is a diaphragm that has an associated electrical drive element (ie, there is a mechanical coupling between the diaphragm and the drive element). As used herein, a "passive diaphragm" or "passive radiator" is a diaphragm that is not electromechanically coupled to and driven by an electrically driven element. In contrast, a passive driver is driven by pressure changes or vibrations induced by an active driver such that the passive driver is acoustically coupled to the active diaphragm.

[0036] Accordingly, acoustic transducers, modules, and systems (and associated techniques) hav...

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PUM

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Abstract

Embodiments of the present disclosure relate to acoustic transducers having a passive diaphragm spatially integrated with an active diaphragm. The present invention provides an acoustic transducer comprising a passive diaphragm and an active diaphragm. The active diaphragm is electromechanically coupled to the electrically driven element, and the passive diaphragm is configured to couple acoustically with pressure changes caused by deflection of the active diaphragm. The active diaphragm has an outer perimeter and an inner perimeter, wherein an X-Y (horizontal) point on the outer perimeter of the passive diaphragm coincides with an X on at least the outer perimeter of the active diaphragm over a common orthogonal Z coordinate - On or within the Y point such that the passive membrane projects a shape that falls on or within the area of ​​the active membrane. In some cases, the inner perimeter of the active diaphragm may define a bounded area for the active diaphragm, the passive diaphragm having an outer perimeter axially above or within the inner perimeter of the bounded area. The ground, superposition ground overlap.

Description

technical field [0001] This patent application and related subject matter (collectively the "disclosure") relate generally to acoustic transducers and related methods and systems, and more specifically, but not limited to, incorporating passive radiators or diaphragms in combination with actively driven diaphragms. Electroacoustic transducer. Background technique [0002] In general, acoustic signals constitute vibrations that propagate through a carrier medium such as, for example, a gas, liquid or solid. An acoustic transducer is in turn a device configured to convert an input acoustic signal into another form of signal, such as an electrical signal, and vice versa. Thus, an electro-acoustic transducer in the form of a speaker can convert an input signal (e.g., an electromagnetic signal) into an emitted acoustic signal, while an acoustic transducer in the form of a microphone can be configured to convert an input acoustic signal into another form (e.g., electromagnetic s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R7/04
CPCH04R7/04H04R2207/021H04R1/2834H04R7/20H04R7/122H04R9/06H04R2499/11H04R1/02H04R1/24
Inventor A·R·库德卡尔
Owner APPLE INC