HackerBox #0079 - Audio DSP

Explore audio signal generation, inter-IC sound (I2S) audio streams, and digital signal processing (DSP). Configure an ESP32-A1S Audio Development Kit featuring a dual-core ESP32 microcontroller coupled to an integrated audio CODEC and a variety of audio interface and peripheral components. Program several audio processing examples leveraging an advanced stream-based hardware abstraction layer for the ESP32-A1S. Examples include wave generators, simple synthesizers, MP3 decoders for online stream sources as well as MP3 files on SD flash cards. Use GNU Octave (or MATLAB) to design and test digital FIR filters that can be implemented on the ESP32 Audio Development Kit. Hack multi-channel audio connectors.

Box Contents Include:

• HackerBox 0079 Collectable Reference Card
• ESP32-A1S Audio Development Kit
• Stereo Three Watt Speakers
• Three JST-XH 2-pin Wire Assemblies
• 32GB Mixza Ocean Series MicroSD Card
• 8-in-1 SD Card Case
• Stereo Wired Earbuds with Case
• 4-in-1 USB Memory Card Reader
• Blue Braided 3.5mm Audio Cable
• Orange Braided 3.5mm Audio Cable
• Two TRRS 3.5mm Audio Breakout Modules
• Female-Female Dupont Jumper Wires
• Exclusive 45 RPM Prismatic Sticker

Online resources:

• Official Online Guide for HackerBox 0079
  
• Ai-Thinker ESP32-A1S Audio Development Kit Page
• Unboxing and Demo Video by 463N7
• Boondock Echo