TalkTo for ST: AWS IoT

TalkTo for ST: AWS IoT

Jumpstart the design of Alexa-enabled appliances with ST’s AVS for AWS IoT qualified platform powered by Audio Weaver and TalkTo. ST Voice for AWS IoT brings high-quality voice control to the high-performing STM32H7 MCUs. The energy-efficient STM32H7 is ideal for low-cost, small, and simple connected devices that require state-of-the-art functionality such as far-field audio capture and natural language understanding.

AVS Integration for AWS IoT

  • Integrate Alexa into any connected device with STM32H7 MCUs
  • Out of the box connectivity to AWS IoT

Reliable far-field performance

  • AVS 2.1 qualified
  • Production ready algorithms

Cost-effective BOM for small form factors

  • Runs on single low-cost STM32H7 MCU
  • No external memory required
  • Optimized for MIPS and Memory

Audio Front-end Features

DSP Concepts’ TalkTo provides reliable far-field performance in noisy environments

  • • 2-mic Beamformer with Single Channel Noise Reduction
  • • State-of-the-art noise cancellation with Adaptive Interference Canceller (AIC)
    • ○ No reference signal needed
    • ○ Eliminates 30dB of external noise sources such as background music or a booming movie
  • • 35dB Acoustic Echo Cancellation (AEC) for excellent barge-in performance

AVS 2.1 qualified design with AWS IoT integration


Support speaker output with integrated playback processing

Software Integrations

Software Integrations - Audio Weaver Designer
Audio Weaver Designer
Drag-and-drop graphical tool to customize and tune audio processing models in real-time with 500+ modules
Software Integrations - Audio Weaver Core for ST Voice
Audio Weaver Core for ST Voice
Embedded audio processing engine for Cortex-M7
Software Integrations - Alexa
Amazon Alexa wake word with out-of-the-box connectivity with AWS IoT Coreinteract with AVS for AWS IoT Core
Software Integrations - Noise Reduction
Noise reduction, echo cancellation and advanced beam-forming signal processing for far-field audio detection

Hardware Specifications

  • High-performance STM32H743 MCU
  • Simple layout for cost-effective deployments in end products
  • Low-cost 2-layer PCB (36mm x 65mm) board
  • 2 microphone array on a daughter card
  • Integrated speaker
  • Murata Wi-Fi module
  • Modular design allows users to change/expand audio inputs (mics), output stages, and audio i/o


Included with the demo kit

  • STM32H747 AVS for AWS IoT board
  • Linear Microphone array daughter card
  • Integrated Speaker
  • Voice UI Quickstart Bundle: Everything you need to know to design voice-enabled IoT products, including design guidelines, microphone placement, an Audio Weaver Designer layout (.AWD), and tools to get started.
  • USB cable
STM32H747 MCU Diagram

Ready to get started?