Patent ID: 11962995
Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. The virtual reproduction method for the multichannel spatial surround sound in three-dimensional space according to claim 1, wherein in the step 11, the sum and difference operation is carried out on the total sum signal E′SUM and the total difference signal E′DIF of the upper layer, and the signals are attenuated by −3 dB, which is, multiplied by 0.7 to respectively obtain the reproduction signals EL2=0.7 (E′SUM+E′DIF) and ER2=0.7 (E′SUM−E′DIF) of the actual loudspeakers at left-front-up and right-front-up directions respectively, and the signals are fed to the corresponding actual loudspeakers for reproduction.