Text this: Modeling of and acoustic feedback cancellation in hearing instruments

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