Fluent.ai Home Automation and System Control

Capture and process voice in the noisiest environments with a cost-effective single-microphone solution utilizing the STM32F412 MCU. With an audio front end from DSP Concepts, this reference design brings near-field Voice UI with intent recognition to home automation devices.

Benefits

  • Near-field (1 m) voice activation
    • Single-Channel Noise Reduction (SCNR) from DSP Concepts’ high-performance TalkTo Audio Front-end
    • Local commands with intent recognition
  • Cost-effective BOM for small form-factor products
  • Runs on single low-cost STM32F4 microcontroller
  • No external memory required
  • Automatic Intent Recognition with support for multiple languages and accents

Audio Front-end Features

  • DSP Concepts’ TalkTo for low-footprint near-field use cases
  • Fluent.ai “Alexa” Wake Word model (English; North American and Mainland Chinese accents)
  • Fluent.ai Automatic Intent Recognition
    • Speech-to-intent recognition model
    • Support for approximately 50 commands
    • Support for multiple languages and accents
      • English (North American accent)
      • English (Mainland Chinese accent)
      • Mandarin (Mainland Chinese accent)

Software Integrations

  • Audio Weaver Designer: Drag-and-drop graphical tool to customize and tune audio processing models in real-time with 500+ modules
  • Audio Weaver Core: Embedded audio processing engine for Cortex-M4

Hardware Specifications

  • Processor
    • STM32F412 MB1209 Rev. D MCU with Arm® Cortex®-M4 running at 100MHz
  • Memory
    • 1024kB Flash
    • 256kB RAM
  • Audio I/O
    • Onboard digital MEMS microphone
  • Board connectors
    • USB connector used as serial port

Included with the demo kit:

  • Available from Fluent.ai
  • Includes STM32 F412 Discovery Kit with STM32F412 MCU and pre-flashed demo firmware
  • 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.

Ready to get started?

Schedule time to speak with one of our audio experts.