Acoustic Beamforming experiments

This repository contains all the ressources for my acoustic beamforming experiment using Arduino. This original article is here: http://charleslabs.fr/en/project-Acoustic+beamsteering+with+a+speaker+array

Various pieces of code/ressource are sorted by folder.

Code_Pattern

This folder contains code to compute beamforming patterns.

The main script is beamforming_pattern_gen.py. Usage: python3 beamforming_pattern_gen.py -h (shows the help and options)

Sample output (python3 beamforming_pattern_gen.py -f 1000 -a 10):

Also included is a geogebra file for uniform amplitude law pattern simulation.

Code_Arduino

This folder contains the code generator and the libraries to program the Arduino. It computes the timing to get the proper frequncy and phase between the elements. Usage:

python3 beamforming_code_gen.py -f 1000 -a 10

Output: Arduino code for the generation of a 1000Hz frequency wave, steered to +10 degrees.

Note: there is also a fully working, but deprecated Java version of this script that I created prior to the python version.

Electronics

This folder contains the 12 channels signal generator PCB based around the FM62429 chips and the Arduino Nano microcontroller board. I used the open-source EDA KiCad.

Experiments_Data

WORK IN PROGRESS This folder contains the data collected for each measurement, in CSV format. The first line of each CSV file contains all information to figure out it content.