Audio

Everything tagged “Audio” across notes, resources, and Mochi logs.

An unbranded smart speaker with a physical microphone mute switch in a real living room

NotesFirmwareAugust 30, 2026

Wake-word detection: always-listening smart devices

A practical look at local wake-word detection on ESP32-S3 devices: audio framing, microWakeWord, threshold tuning, false activations, microphone mute, and privacy.

Wake Word TinyML ESP32-S3 Audio Voice Assistant Privacy

Original open robot prototype showing its controller, speaker, battery and display hardware

Popular

NotesFirmwareAugust 5, 2026

Two-Way I2S Audio on ESP32-S3: I2S Microphone and I2S Speaker

A practical explanation of BCLK, WS, DIN, DOUT, full-duplex audio, sample rate, and buffers when building two-way I2S audio on ESP32-S3.

Firmware Hardware ESP32-S3 Audio I2S