Describir: Sound insulation and room acoustics by Per V. Brüel ... /

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