STM32 Software Brings Alexa Tech to Simple Connected Objects

The X-CUBE-AVS software package from STMicroelectronics enables Amazon’s Alexa Voice Service (AVS) to run on STM32 microcontrollers, allowing simple connected objects such as smart appliances, home-automation devices, and office products to support advanced conversational user interfaces with Cloud-based intelligence like automatic speech recognition and natural-language understanding.

As an expansion package for the STM32Cube software platform, X-CUBE-AVS contains ready-to-use libraries and open routines that accelerate porting the AVS SDK (Software Development Kit) to the microcontroller. With application samples also included, it abstracts developers from the complex software layers needed to host AVS on an embedded device. Being the first such package to cater specifically for microcontrollers, whereas AVS development usually targets more power-hungry and expensive microprocessors, X-CUBE-AVS makes Alexa technology accessible to a wider spectrum of developers and projects.
The software handles low-layer communication and connection to AVS servers, provides application-specific services, and encapsulates the AVS protocol to ease application implementation. Connection management includes a persistent-token mechanism for directly restoring connection losses without repeated user authentication. A software test harness is provided for endurance testing, which can simulate events such as network disconnection to facilitate robustness testing and validation of the user application.

X-CUBE-AVS comes with a demonstration example for the STM32F769 Discovery Kit (order code: 32F769IDISCOVERY), which shows how to connect a simple smart-speaker to AVS, leveraging the board-configuration interface included in the software. X-CUBE-AVS can be used with other STM32F7 microcontrollers, or any STM32 device with adequate CPU performance and memory to run the AVS SDK.

X-CUBE-AVS is available now to download, free of charge, from

STMicroelectronics |

Arrow Electronics and Conexant Systems Collaborate on Development of Amazon Alexa-Enabled Smart Home Products

Arrow Electronics recently agreed to distribute and source components and provide technical design support for Conexant’s AudioSmart 2-Mic Development Kit for Amazon Alexa Voice Service (AVS). Conexant recently announced a collaboration with Amazon on an AVS-approved AudioSmart 2-Mic Development Kit. Featuring the Conexant AudioSmart CX20921 high-performance hands-free Voice Input Processor and “Alexa” wake word technology, the Conexant AudioSmart 2-Mic Development Kit will help developers and manufacturers quickly and easily build Alexa-enabled products that provide users with an ideal voice experience.Arrow Conexant - kit

The Conexant AVS-approved AudioSmart 2-Mic Development Kit is designed to be easily integrated into any third-party AVS system prototype based on the Raspberry Pi. Its dual-microphone voice processing capability recognizes the “Alexa” wake word and delivers speech requests from anywhere in a room—even in noisy, real-world conditions. It also enables voice barge-in capabilities, allowing users to interrupt their Alexa device when it is playing music or other types of sound.

Source: Conexant