Причём эфирный формат. Насчёт Сони не уверен;)

NICAM - (full name: NICAM 728) Digital two-channel audio transmissions with sub-code selection of bi-lingual operation. Stereo digital signals with specifications approaching those of Compact Disc are possible. NICAM stands for Near Instantaneously Companded Audio Multiplex and uses a 14bit sample at a 32KHz sampling rate which produces a data stream of 728KBits/sec.

Декодеры Никама присутствуют в некоторых ТВ и видаках.