AAMA - Affordable Ambisonics Microphones Array

DIY microphone array kits development: The overall target is the making of affordable DIY "Ambisonics Field Recorder" with individual flair.

The use of embedded Linux computer allows individual solutions of standalone implementations. Extensions, capes or modules are developed to interface and manage the microphone arrays. Additional micro-controller for intermediate interfacing Linux computers are in focus.

Sensors enhancing the usage of these higher order Ambisonics microphone arrays with software tools helps to build your individual "perfect" Ambisonics fieldrecorder.

Mission statement

We assemble a tool-set for making affordable Ambisonics microphone arrays as DIY projects providing hardware kits and hacks and configurable software tool-sets with example applications as Higher Order Ambisonics (HOA) fieldrecorder.

The vision of an portable 3D-Audio fieldrecorder inlcudes:

  • iemKit as computer (embedded ARM device)
  • microphone interfaces: analog with optional phantom power and/or digital arrays
  • Microphone types: MEMS, electret or condensor.
  • sound interface to embedded computer: I2S, TDM, ...
  • ALSA driver for audio cards, capes and hats
  • headphone output for monitoring
  • calibration tools for initial individual datasets and encoders of your AAMA
  • on set calibration before each recording
  • calibrator mountable at microphone array.
  • direct recording on the embedded device (SD-Card, ...)
  • usage as realtime interface over low latency audio streams
  • rechargeable battery with BMS (battery management system) and charger.
  • accelerator and gyrator with compass for microphone to track position
  • accelerator and gyrator with compass for headphone to track position