In recent years, with the popularization and promotion of computer applications, a number of commercial software have emerged, the most famous, such as GT-Power, Rieardo-Wave, AVL-BOOST, SYSNOISE so, the software on the air filter and exhaust muffler acoustic analysis more convenient, intuitive and

In recent years, along with computer applications and promotion of universal access, and some commercial software is also appeared one after another, the most famous such as GT - Power Rieardo - Wave , , , SYSNOISE BOOST AVL - such as the air filters, these software and exhaust muffler of acoustic a

In recent years, along with the computer application popularization and the promotion, some commercial softwares also one after another appeared, most famous like GT-Power, Rieardo-Wave, AVL-BOOST, SYSNOISE and so on, these softwares were more convenient intuitively to the air cleaner and the exhaus

Recent, as computer applications are pervasive and promote some commercial software also appeared most famous ' who GT-Power, Rieardo-Wave, AVL-BOOST SYSNOISE, these air filters and exhaust muffler acoustics analysis easier, intuitive and more precise it. Muffler acoustics using commercial software

In recent years, with the popularization and promotion of computer application, some commercial software also appeared in succession, the most famous such as GT-Power, Rieardo-Wave, AVL-BOOST, SYSNOISE etc, these software for acoustic analysis of the air filter and exhaust muffler more convenient, i