Early HDTV commercial experiments, such as NHK's MUSE, required over four times the bandwidth of a standard-definition broadcast. Despite efforts made to reduce analog HDTV to about twice the bandwidth of SDTV, these television formats were still distributable only by satellite.
ఒక SD ప్రసారం కంటే ప్రారంభ HDTV వాణిజ్య ప్రయోగాల నుండి ఎంత ఎక్కువ బ్యాండ్ విత్ అవసరం?
over four times