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Published on May 2, 2014
Acoustic Beamforming is a technique that takes inputs from multiple microphones in some kind of array (often linear) and uses the delays between the various inputs to calculate the distance from the sound source. Delay and sum beamforming applies a delay to each input and then sums the input to find the area of greatest magnitude.
The Acoustic Beamformer is a tool that can be implemented in many environments, such as conference rooms or small lecture halls, to focus on a specific sound source in a room full of sounds. The beam former is an array of eight microphones, connected to an analog-to-digital converter and a PC that will collect the sound signal data from each microphone. The PC uses custom software to manipulate the data in order to localize a single sound source.