In addition to its high-resolution images, Hi-Vision also provides CD-quality sound. The high-fidelity audio is also encoded digitally to eliminate noise and make it possible to faithfully reproduce sound captured on location or in a studio.

・5.1 surround sound broadcasting

5.1 surround sound broadcasting is a six-channel speaker system comprising three front channels, two rear channels and a sixth channel for additional bass sound. A 5.1 surround sound system is capable of reproducing sounds with a realistic feeling of depth that gives listeners a heightened sense of involvement. With large-screen displays and home theatre systems increasingly popular among consumers, interest in 5.1 surround sound broadcasting is expected to rise.

Every match of the FIFA World Cup in 2006 was broadcast from Germany on BS hi with 5.1 surround sound.