
MEMS-based acoustic biosensing platform
for high-performing true wireless earbuds.
Advanced biosensing, seamlessly integrated into your TWS earbuds — enabling health monitoring, wear detection, and heart-rate insights parellel to audio playback. USound’s MEMS technology and software algorithm brings ultrasonic precision: enabling in-ear biosensing that transforms ordinary TWS earbuds into premium health wearables.
Health monitoring parallel to audio playback
USound MEMS speakers can function in ultrasonic frequencies while simultaneously playing audio, enabling health tracking without compromising audio quality.
No Extra Component Required
USound MEMS speakers enable vital sign monitoring without additional hardware, reducing design complexity and saving space and cost.
Biosensing in all environmental conditions
With USound’s advanced signal processing, the system reliably captures vital signs even in noisy and dynamic environments, such as during workouts or commutes.
Reliable Wear Detection
Our cutting-edge ultrasonic platform also enables precise wear detection.
This eliminates the need for expensive external sensors such as infrared modules, streamlines the hardware design, lowers the BOM, and enhances the overall user experience.
Accurate Next-Gen Biosensing APG-based Technology.
USound MEMS speakers’ ability to generate both audio and ultrasound waves enables measurements of blood volume changes in the ear with unprecedented precision, forming the foundation of Audio Plethysmography (APG)-based health monitoring.


The MEMS tweeter transmits low-level ultrasound signals that are safe for human exposure and interact with vascular tissue.

Returning ultrasound waves are captured by built-in ANC feedback microphones — no need for added receivers.

The resulting APG signal is a pulse-like waveform that synchronizes with the heartbeat and reveals rich cardiac information.
Seamless system-level integration of biometric sensing.
USound’s MEMS-based health monitoring platform for TWS earbuds enables advanced biometric sensing, reducing hardware complexity.

Plug & Play Dual-Speaker Audio Module
Greip 1.0 is a high-performance, two-way audio module that combines a state-of-the-art MEMS tweeter with a powerful electrodynamic woofer. Designed for premium audio applications, Greip delivers exceptional clarity and dynamic range, making it ideal for Active Noise-Cancelling (ANC) earbuds, Audiophile-grade wireless earphones, and Next-generation biosensing TWS devices. This turnkey solution accelerates time-to-market and simplifies system integration.

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GET STARTED?
Whether you’re developing next-gen TWS earbuds, smart hearing aids,
or immersive audio wearables, USound provides the MEMS platform
to power tomorrow’s health-centric audio solutions.