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

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Text this: Echo cancellation in Voice over IP