espressif/esp-sr

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

1492 stars · 224 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

ESP-SR is Espressif's speech recognition framework for ESP32-series chips, providing wake word detection (WakeNet), voice activity detection (VADNet), speech command recognition (MultiNet), audio front-end processing, and speech synthesis. It ships as an installable component so embedded developers can add offline voice AI to their firmware with minimal effort.

Use cases

• add a custom wake word to an ESP32-S3 device
• recognize offline voice commands on a microcontroller
• build a voice-controlled smart home device with ESP32
• run voice activity detection on embedded hardware
• add text-to-speech output to an ESP32 project
• do acoustic echo cancellation for full-duplex voice on ESP32
• detect sound direction of arrival with a microphone array

When to choose

• you are building voice interfaces on ESP32/ESP32-S3/C-series chips
• you need fully offline wake word and command recognition on-device
• you want an integrated pipeline (AFE, VAD, wake word, commands, TTS) as a single component

When to avoid

• you need speech recognition on servers, desktops, or non-Espressif hardware
• you need large-vocabulary or free-form dictation rather than wake words and fixed commands
• you require an OSI-approved open-source license, since the licensing is custom

Facets

library · maturity active

speech-recognition tts audio-processing machine-learning sdk speech-processing embedded-systems artificial-intelligence iot embedded iot c cpp wake-word voice-activity-detection esp32 espressif offline-speech embedded-ai audio-front-end

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markdown · JSON · MCP: product_card(name="espressif/esp-sr")