Tag: mems loudspeakers



USound MEMS speakers design earbuds

Advantages of Occluded Ear Applications

February 18, 2020

Compared to traditional electrodynamic and balanced armature Loudspeakers MEMS speakers provide unique features and compelling advantages compared to electrodynamic and balanced armature speakers. The application-specific advantages of MEMS speakers must be separated into two main kinds of applications: Free field and occluded ear applications. In this article, we will focus on the occluded ear applications.…

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How to measure Ganymede MEMS microspeakers

April 30, 2019

USound specifies and measures Ganymede MEMS speakers, Achelous and Adap, in both acoustic domains: in the Baffle and in the Coupler (artificial ear). For both setups, proprietary measurement adapters are used to fit the standardised setup. In Baffle In the case of the baffle, the measurement adapter places the MEMS speaker with appropriate sealing inside…

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How do USound MEMS speakers work?

April 4, 2019

USound’s technology is based on piezoelectricity. Crystals with these properties are for example aluminium nitride (AlN) or lead zirconate titanate (PZT). These materials expand or shrink in an electric field. In a practical configuration, such an electric field is generated between electrodes, covering a piezoelectric layer. This stack is put on top of a substrate…

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Ganymede speakers measure only 4.7 x 6.7 x 1.6 mm.

What are the inherent advantages of USound MEMS speakers?

June 4, 2018

If comparing the USound MEMS speakers to conventional and Balanced Armature speakers a few inherent advantages present themselves: Smaller size; especially the flatness of USound MEMS speakers is unbeatable Practically no heat generation (especially compared to the electrodynamic speakers) Much lower mass; overall less mass and lower moving mass -> lower vibrations No electromagnetic radiation To…

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