Arbitrary Listening-Point Generation Using Sub-Band Representation of Sound Wave Ray-Space
This paper proposes arbitrary listening-point generation of sound without source localization, and a theory based on the ray-space representation of light rays using sub-band signal processing. An array of beam-formed dynamic microphone-arrays (MAs), are set and each MA generates a multi frequency layer sound-image (SImage) by scanning the viewing range of a camera. Each layer is captured by active microphones in MA for a given frequency range which makes the correct interval to capture that frequency layer, and a sound wave ray-space. Arbitrary listening-point generation of each layer is done by geometry compensation of corresponding images in the location of each MA or SImages or their combination. Each layer sound of an SIamge is generated by averaging the sound wave in each pixel or group of pixel. The listening-point is generated after combining each layer sound in frequency domain and inverse transformation from frequency to time domain