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Ventilation acoustic transducers and related methods and systems

A technology of acoustic transducers and channels, applied in the direction of electrostatic transducer speakers, electret electrostatic transducers, electrostatic transducer microphones, etc., can solve the problem of transducer inoperability and achieve improved loudness, low sound distortion effect

Active Publication Date: 2022-05-24
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When biased by an external load, the operation of an acoustic transducer (whether constructed as a speaker or a microphone) can be negatively affected, or the transducer can become inoperable entirely

Method used

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  • Ventilation acoustic transducers and related methods and systems
  • Ventilation acoustic transducers and related methods and systems
  • Ventilation acoustic transducers and related methods and systems

Examples

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Embodiment Construction

[0065] Various principles regarding ventilation sound transducers and transducer packages, as well as related methods and systems, are described below with reference to specific features. For example, some principles relate to air pressure vents for transducer elements, and other principles relate to air pressure vents for transducer packages. More specifically, but not exclusively, certain aspects relate to vents having a complex acoustic impedance to equalize the air pressure across the acoustic diaphragm. The vents described in the context of particular configurations are merely specific examples of contemplated vent arrangements chosen as convenient illustrative examples of the disclosed principles. Nonetheless, one or more of the disclosed principles may be incorporated in various other arrangements of acoustic transducers, modules, and systems to achieve any of various corresponding system characteristics.

[0066] Accordingly, ventilation sound transducers, modules and...

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Abstract

The present disclosure provides a ventilated acoustic transducer and related methods and systems. An electronic device has an acoustic transducer with an acoustic diaphragm. The vibrating membrane has a first main surface and a second main surface opposite to each other. The front cavity is disposed adjacent to the first major surface. The rear cavity is disposed adjacent to the second major surface. The elongate channel defines an air pressure vent and extends from a first end fluidly coupled with the anterior chamber to a second end fluidly coupled with the posterior chamber to fluidly couple the anterior chamber with the posterior chamber. The elongated channel may have a high aspect ratio (L / D), providing a large air quality for the vent. The elongated channel may be segmented to define a higher order filter. For example, the segmented channel may have repeating acoustic mass cells and acoustic compliance cells in cascade to provide additional degrees of freedom for tuning of the barometric vent.

Description

[0001] This application is a part of the invention patent application with the application number of 202010458416.3, the priority date of May 28, 2019, the application date of May 27, 2020, and the invention titled "Ventilation sound transducer and related methods and systems". case application. [0002] CROSS-REFERENCE TO RELATED APPLICATIONS [0003] This disclosure claims priority to US Patent Application 62 / 853,626, filed May 28, 2019, US Patent Application 16 / 880,812, filed May 21, 2020, and US Patent Application 16 / 880,825, filed May 21, 2020 The contents of these US patent applications are incorporated herein in their entirety for all purposes. technical field [0004] The present patent application and the subject matter disclosed herein (collectively, the "disclosure") relate generally to ventilation sound transducers and related methods and systems. More specifically, but not exclusively, vent arrangements configured to exhibit polyacoustic impedance are described...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/28H04R1/40H04R9/02H04R9/06H04R17/00H04R19/01H04R19/02H04R19/04B81C1/00H04R7/16
CPCH04R9/02H04R9/06H04R19/02H04R1/2846H04R1/403H04R17/00H04R19/01H04R19/04B81C1/00119H04R2400/11H04R2499/11H04R2201/003H04R7/16B81C2203/0109B81B2201/0257B81B2203/0338
Inventor P·C·赫鲁迪J·D·克罗斯比G·哈提波格鲁
Owner APPLE INC
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