High aspect ratio microspeaker having a two-plane suspension

Abstract

A microspeaker includes a frame and a diaphragm having length sides that are longer than its width sides. A magnet is positioned below the diaphragm. A yoke includes a base portion positioned below the magnet and sidewalls which extend from the base portion, the yoke sidewalls positioned only along a length dimension of the magnet. A voice coil includes an upper end attached to a bottom face of the diaphragm and a lower end positioned within a gap formed between the length dimension of the magnet and the yoke sidewalls. A first suspension member is attached to the length sides and the width sides of the diaphragm and the frame. The first suspension member is within a first plane. A second suspension member is attached to the lower end of the voice coil and the frame. The second suspension member is in a second plane different from the first plane.

Description

technical field [0001] Embodiments of the present invention relate to a loudspeaker with a dual suspension system, and more particularly to a high aspect ratio microspeaker with a dual plane suspension system for improved diaphragm stability. Other embodiments are also described and protected by claims. Background technique [0002] In modern consumer electronics, audio capabilities are playing an increasing role as digital audio signal processing and audio content delivery continue to improve. In this regard, there is a wide range of consumer electronic devices that could benefit from improved audio performance. Smartphones, for example, include electro-acoustic transducers such as speakerphone amplifiers and headset receivers that may benefit from improved audio performance. However, smartphones do not have room large enough for much larger high-fidelity sound output devices. This is true for some portable personal computers such as laptops, notebooks, and tablets, and ...

AI Technical Summary

Problems solved by technology

In some cases, the diaphragm can have a relatively high length-to-width aspect ratio, which can lead to an increased risk of stability issues, such as increased severity of rocking modes of moving components

For example, as the aspect ratio of the diaphragm increases (i.e., the ratio of the long dimension, length, to the short dimension, width, increases), the risk of wobbling or twisting along the long dimension of the diaphragm may increase

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