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

Claim 4:
5. The virtual reproduction method for the multichannel spatial surround sound in three-dimensional space according to claim 1, wherein the filtering with the M′/2 virtual reproduction signal processing functions Σ′1,2, Σ′3,4, . . . Σ′M′−1,M′ in the step 8, and the filtering with the M′/2 virtual reproduction signal processing functions Δ′1,2, Δ′3,4, . . . Δ′M′−1,M′ in the step 9 are carried out according to virtual reproduction signal processing functions obtained by the following equations:, ∑
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            
            
              
                α
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            
          
          
            
              α
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wherein m=1, 2, . . . M′,
wherein HL (θ′m′, f) and HR (θ′m′, f) are a pair of Head Related Transfer Functions (HRTFs) from virtual loudspeakers in a direction of θ′m′ of the horizontal plane to left and right ears, wherein f is a frequency; and α2=α2(f) and β2=β2(f) are HRTFs from actual loudspeaker at left-front-up or right-front-up direction in the ipsilateral and contralateral ears, respectively.