Fig. 2From: An overview of machine learning and other data-based methods for spatial audio capture, processing, and reproductiona Dummy head recording systems Cortex Instruments MK1 (left) and GRAS Kemar (right), for binaural recording and psychoacoustical studies. b A consumer human-computer interaction device (Microsoft Kinect) equipped with a 4-channel linear microphone array. c Example on-board circular arrays employing MEMS microphones, the 6-channel ReSpeaker Circular Array (left) and the 7-channel MOJO Microphone shield (right). d Example tetrahedral arrays, the Rode Soundfield SPS200 (left) and Coresound Tetramic (right) for capturing first-order Ambisonics. e A high-resolution spherical microphone array, the 32-channel mh Acoustics EigenmikeBack to article page