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Smartspeaker

SmartSpeaker is C firmware for a FreeRTOS-based embedded speaker that records speech, sends it to Baidu’s cloud recognition service, and uses recognition results to trigger actions such as music playback or LED changes.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Smartspeaker — OpenViST project profile in Audio & Voice AI.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it as a reference or starting point when building a microcontroller-based voice-controlled speaker and you can work with its documented hardware and Baidu recognition setup.

Who it is for

  • Embedded developers exploring speech-controlled speaker hardware.
  • STM32F4 developers studying audio capture, playback, Wi-Fi communication, and command-driven device actions.

Documented uses

  • Capture speech automatically using a basic voice-activity detector.
  • Send recorded audio to Baidu cloud speech recognition.
  • Use recognition results to trigger playback or LED behavior.
  • Store recordings and music on an SD card and explore embedded audio components.
Before you choose

Requirements & limits

  • Requires physical embedded hardware; it is firmware rather than a standalone app.
  • Wi-Fi details and a Baidu speech developer token must be configured in source files.
  • The README identifies ESP8266 network bandwidth as a cause of slower recognition and says online music playback is not supported.
  • The repository specifies the MIT license.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Configure Wi-Fi and Baidu speech recognition

Prepare the firmware configuration for Wi-Fi access and Baidu cloud speech recognition.

Before you start

  • SmartSpeaker source code
  • Wi-Fi network details
  • A Baidu speech developer account and its token

Steps

  1. Configure the Wi-Fi network in network.c.

  2. Obtain a token through the Baidu speech developer service.

  3. Configure the token in netvoc.c.

Expected outcome

The source configuration contains the network details and recognition token needed by the project.

Guide limitations

  • These steps cover configuration only; they do not document firmware compilation, flashing, or a complete device run.
  • ESP8266 bandwidth can make speech recognition slow, and online music playback is unavailable.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
14 October 2026
Original website title
lovelyterry/SmartSpeaker · Official homepage title · retained in its source language
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