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BlueCoin, now available at Mouser, provides voice-over-BLE

The BlueCoin hearing and motion sensing platform from STMicroelectronics is now being stocked by Mouser.

BlueCoin is an integrated Bluetooth development system that incorporates low power 9-axis inertial and environmental sensors and a cluster of four digital MEMS microphones that are coupled with a STM32F4 microprocessor.

The augmented hearing and motion-sensing reference platform is said to be compatible with the STM32 open development environment (ODE) and open software expansion libraries.

The STM32Cube expansion pack software allows voice transmission over a Bluetooth low energy connection, making it suitable for audio entertainment, voice-controlled TV remotes, and wearable applications.

According to the company, the board can act as server and client simultaneously and can connect to any IoT or wireless sensor network.

The ODE function pack for the MEMS microphones uses sound source localisation, beamforming, and acoustic echo cancellation to improve sound quality. Additional applications include PC control software compatibility to configure optimisations, beam direction, and source localisation.

As well as offering sensor fusion, the board features a BlueNRG-MS network processor which provides the Bluetooth low energy connectivity, while an STBC03 lithium-ion battery charger IC provides power management.

Peggy Lee

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