Gameplaywise , I like Mercy . I played Medic a lot in TF 2 and the additional mobility , damage boost and ability to make plays without needing perfect coordination with teamates is really amazing . Characterwise , Reaper . He ' s such a ridiculous ball of angst and edge . I can ' t help but laugh whenever I see anything with him . <| sep |> Through a process called modulation . The embedded information changes modulates a parameter either the amplitude , frequency or phase of the wireless signal a sine wave called carrier at the transmitter . The receiver detects the changes in the carrier and recovers the original data . Here is an example where the data is digital <| sep |> I was in a lobby and almost everyone had 1 KD or below and half of them had the nuke calling card .