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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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Advantages of Free Field Applications

February 7, 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 free field applications.We refer to…

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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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