xMEMS announces Cowell, the world’s smallest MEMS speaker for TWS applications and hearing aids


SANTA CLARA, Calif .– (COMMERCIAL THREAD) – xMEMS Labs today introduced Cowell, the world’s smallest monolithic MEMS speaker. At just 22mm3, 56 milligrams and with a 3.4mm diameter side-release case, Cowell delivers an impressive SPL of 110dB at 1kHz. Cowell provides up to 15dB of gain above 1kHz for improved speech-in-noise performance and greater vocal and instrumental clarity compared to electrodynamic and balanced armature speakers. Cowell is the first speaker to use xMEMS ‘2sd M2 generation loudspeaker cell architecture providing improved SPL / mm2 allowing for increased volume in smaller form factors. Cowell engineering samples are available now, with mass production beginning in the second quarter of 2022.

“Cowell’s architecture addresses two key trends in the audible device market: 1) spatial and lossless audio; and 2) over-the-counter (OTC) hearing aids, ”said Mike Housholder, vice president of marketing and business development for xMEMS. “Cowell’s small size and performance aligns perfectly with these market trends with fast mechanical response, up to 150 times faster than existing enclosures, near zero phase shift, and +/- phase consistency. 1 degree allowing precise placement of audio in 3D space.

For TWS applications, Cowell can be implemented as a full range loudspeaker in occluded headphone architectures or as a small high performance tweeter combined with an electrodynamic woofer in non-occluded or leaky 2-way solutions. . Cowell’s superior high-frequency response delivers new levels of clarity and presence to speech, vocals and instruments, allowing the woofer to focus on the low-frequency energy required for active noise cancellation.

For hearing aid applications, Cowell is a full range loudspeaker 45% smaller than an equivalent balanced armature receiver, making in-channel receiver applications possible. Cowell’s superior high-frequency response, the absence of in-band resonance peaks, and a 15dB gain above 1kHz make it an ideal speaker for treating high-frequency hearing loss and improving performance. intelligibility of speech in noise. Finally, Cowell’s speaker diaphragm is ventilated (front to back) to relieve air pressure that can build up over time inside the ear canal, causing fatigue. reduced with long-term wear and increased listening comfort.

As with all xMEMS µ loudspeakers, Cowell is a monolithic architecture implementing both actuation and a silicon diaphragm, resulting in unparalleled part-to-part frequency response consistency and reduced time adaptation or calibration of the loudspeakers during manufacture. This innovative transduction mechanism also produced the fastest and most accurate speakers in the world, eliminating spring and suspension recovery from coil speakers, improving audio quality and sound field reproduction. . The side-release housing and 1mm thick profile provide placement flexibility in the earpiece, leaving room for larger batteries and additional sensor components. The SMD compatible enclosure with an IP58 dust / water rating simplifies system design, integration and assembly.


Cowell samples and evaluation kits are available today for select customers, with mass production slated for Q2 2022. Cowell is available in a 3.2 x 1.15 x 6 side-release LGA package , 0 mm (diameter 3.4 mm). Cowell is paired with the xMEMS Aptos Class-H audio amplifier (1.92 x 1.92 x 0.6mm WLCSP).

About xMEMS Labs, Inc.

Founded in January 2018, xMEMS Labs is reinventing sound with the world’s first monolithic True MEMS speaker for TWS and other personal audio devices. xMEMS has 36 granted patents and over 100 patents pending for its technology. The company is dedicated to designing advanced solutions and applications with MEMS technology for a range of consumer electronics devices. For more information, visit https://xmems.com.

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