Editing Pulse-amplitude modulation (section)

===Digital television===
The North American [[Advanced Television Systems Committee standards]] for [[digital television]] uses a form of PAM to broadcast the data that makes up the television signal. This system, known as [[8VSB]], is based on an eight-level PAM.<ref>{{cite web|url=http://www.arrl.org/files/file/Technology/TV_Channels/8_Bit_VSB.pdf|title=WHAT EXACTLY IS 8-VSB ANYWAY?|last=Sparano|first=David|year=1997|access-date=8 Nov 2012}}</ref> It uses additional processing to suppress one [[Single-sideband modulation|sideband]] and thus make more efficient use of limited [[bandwidth (signal processing)|bandwidth]]. Using a single 6&nbsp;MHz channel allocation, as defined in the previous [[NTSC]] analog standard, 8VSB is capable of transmitting 32&nbsp;Mbit/s. After accounting for error-correcting codes and other overhead, the data rate in the signal is 19.39&nbsp;Mbit/s.