8VSB (8-level Vestigial Sideband)

8VSB (8-level Vestigial Sideband) is a TV signal transmission method used in digital television broadcasting. It encodes data into eight distinct voltage levels, allowing the transmission of high-definition video and audio over the same frequency with efficient bandwidth use. The "vestigial sideband" part refers to a technique that reduces the bandwidth needed by trimming part of one sideband frequency, making transmission more efficient while still allowing accurate signal reconstruction at the receiver. Overall, 8VSB enables high-quality digital TV signals within the limited spectrum available for broadcasting.