Engineer your IoT, bit by bit!
The ESP32 is capable of driving a stereo 32-bit audio codec for the best audio output you can get out of it. Here are some tutorials and examples on how you can play back and record high quality audio, based on the IoTBits AudioBit SGTL5000 audio codec board.
ESP32 has some number crunching capacity, that is for sure. MP3 decoding is pretty easy to do on the ESP32, even at high data rates. But introduce the problem of MP3 licensing and you are deeper in the sand with your commercial application. The alternative? Xiph’s Vorbis project! Vorbis is free and is very wellRead more about Ogg Vorbis on ESP32 – Feasible?[…]
The previous article touched on some basics of interfacing an I2S audio codec with the ESP32. This article will further outline the pinout and requirements of a typical audio application built around the ESP32, to be specific. Types of audio codecs In terms of interfacing, there are primarily 2 types of audio codecs: Codec thatRead more about Interfacing an Audio Codec with ESP32 – Part 2[…]
The ESP32 is an extremely powerful microcontroller with an integrated 2.4GHz radio and a ton of other peripherals. The other digital communication interface modules on the chip include all popular interfaces such as I2C, SPI, UART, and I2S. The I2S interface is pretty much the industry standard for digital audio codec interfacing and other similarRead more about Interfacing an audio codec with ESP32 – Part 1[…]