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

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Text this: Feedback control of thermo acoustic instabilities