The M5Stack Atomic Audio-3.5 Base adds high-quality voice recognition and audio playback to Atom series controllers, featuring a 3.5mm TRRS audio jack, MEMS microphone, ES8311 audio codec, and full-duplex audio support for smart voice interaction projects.
The M5StackAtomic Audio-3.5 Base is a voice recognition and audio playback base designed for the Atom series controllers (not compatible with Atom Voice).
It integrates an ES8311 mono audio codec, a MEMS microphone, and an NS4150B power amplifier, equipped with a standard 3.5mm audio jack and a 4-segment TRRS connector (CTIA standard) to support both audio output and microphone input.
The ES8311 supports 24-bit audio resolution with a sampling rate range of 16kHz ~ 64kHz and communicates via the I2S interface, enabling high-fidelity audio processing.
The onboard MEMS microphone offers a high signal-to-noise ratio and digital output capability, optimized for automatic speech recognition scenarios, while the integrated speaker delivers efficient audio output. This base supports full-duplex communication for simultaneous audio transmission and reception, making it suitable for applications such as voice assistants, voice control terminals, smart home voice gateways, and voice interaction devices.
Features
3.5mm audio jack supporting audio output + microphone input
Integrated ES8311 high-fidelity audio codec with 24-bit high-resolution audio processing
Full-duplex voice communication with simultaneous audio send and receive
Auto-switching functionality
Onboard audio source ↔ external microphone (auto-switch during playback)
Speaker ↔ external microphone (auto-switch during recording)
