Study of GSO-GL based secondary source configuration optimization method for broadband sound field reproduction
Sound field reproduction is a method that uses multiple secondary sound sources to reproduce a prede-fined desired sound field in a listening area.The configuration of the secondary sound sources is a key factor affect-ing the reproduction performances.To optimize the secondary source configuration,this study proposes a new meth-od that combines the Gram-Schmidt orthogonalization method with the group Lasso method,which is called GSO-GL method.Firstly,it selects a certain number of the secondary sources from all the alternative secondary sources using the Gram-Schmidt orthogonalization method.The excitation sources are then further selected from the secondary sources selected in the previous step using the group Lasso method.The sound field simulation from the 2D room model show that the GSO-GL method outperforms the Gram-Schmidt orthogonalization method or the group Lasso method alone,combining the high system stability of the Gram-Schmidt orthogonalization method with the high re-production accuracy of the group Lasso method.
sound field reproductionsecondary source configuration optimizationgroup LassoGram-Schmidt or-thogonalization
万方数据
维普
