Speaker
Jens Ahrens
(Chalmers University of Technology)
Description
Cardioid equatorial microphone arrays are baffleless ambisonic capture devices that use outward facing cardioid microphones arranged on a circle. The microphone mounts are straightforward to manufacture, and the compact form factor produces minimal visual disturbance. But low-cost cardioid microphones with low mismatch are not always readily available. We present an implementation that uses pairs of omnidirectional microphones to create virtual cardioid sensors. This solution poses challenges at low frequencies. Our implementation therefore uses omnidirectional sensors at low frequencies and the virtual cardioid sensors at mid- and high frequencies
Author
Jens Ahrens
(Chalmers University of Technology)