This Atomic Echo Base is a voice recognition module made for the M5 Atom series and has audio input and output capabilities. It combines an ES8311 mono audio decoder, a MEMS microphone, and an NS4150B power amplifier to give a great audio experience. The ES8311 supports 24-bit audio resolution and operates at sample rates from 16KHz to 64KHz, using I2S communication for level audio processing. The MEMS microphone provides a high signal-to-noise ratio (SNR), making it ideal for speech recognition. Paired with a built-in speaker, you can hear your voice with a clear sound output. With full-duplex communication, the Echo Base can handle voice input and output simultaneously. This makes it well-suited for tasks like voice commands, speech recognition, wake-up functions, and real-time audio playback. Features * Compatible with the M5 Atom series * Voice recognition * Mono audio codec * MEMS microphone * Class-D amplifier * Speaker * Development platform * UIFlow 1.0 * UIFlow 2.0 * Arduino IDE Specifications Audio Codec ES8311: 24-bit resolution, I2S protocol MEMS Microphone MSM381A3729H9BPC, SNR ≥ 65 dB Power Amplifier NS4150B: Class-D power amplifier Speaker 2014-type cavity speaker: 1W@8Ω Standby Current DC3.3V/3.36mA Operating Current DC3.3V/14.84mA Operating Temperature 0 - 40°C Product Size 24.0 x 24.0 x 14.14mm Product Weight 6.3g Packaging Size 85.0 x 65.5 x 15.0mm Packaging Weight 12.5g Resources * Product Wiki Package Contents * 1x Atomic Echo Base https://elecena.pl/product/27660486/m5stack-atomic-echo-base-with-microphone-and-speaker 2025-01-08 https://elecena.pl/product/27660486/m5stack-atomic-echo-base-with-microphone-and-speaker 2025-04-29 https://elecena.pl/product/27660486/m5stack-atomic-echo-base-with-microphone-and-speaker 2025-11-28 https://elecena.pl/product/27660486/m5stack-atomic-echo-base-with-microphone-and-speaker 2025-11-29