Text this: Sound energy enhancement via impedance-matched anisotropic metamaterial

 _    _     _____   __    __    _____     ______  
| \  / ||  |  ___|| \ \\ / //  |  ___||  /_____// 
|  \/  ||  | ||__    \ \/ //   | ||__    `____ `  
| .  . ||  | ||__     \  //    | ||__    /___//   
|_|\/|_||  |_____||    \//     |_____||  `__ `    
`-`  `-`   `-----`      `      `-----`   /_//     
                                         `-`