Читать книгу Home Recording For Dummies - Jeff Strong - Страница 77

S/PDIF (short for Sony/Phillips Digital Interface Format) cables consist of an unbalanced coaxial cable (one wire and a shield) and RCA plugs. (Figure 3-7 shows what the inputs look like on the machine.) These cables can also be made from fiber-optic cable and a Toslink connector. The S/PDIF format can transmit two channels of digital data at one time. S/PDIF protocols are similar to AES/EBU standards, except that S/PDIF was originally designed for the consumer market — which explains why unbalanced cords are used. In spite of being developed for the consumer market, S/PDIF connectors are found on a lot of pro recording gear along with (or instead of) AES/EBU.

If you want to use cords that are longer than 3 to 4 feet when using an S/PDIF connector — or about 15 feet for AES/EBU connectors — your best bet is to use video or digital audio cables. Regular audio cables degrade the sound at longer distances because they can’t transmit the type of signal that digital produces without affecting the quality of the sound. If you use audio cables for longer distances, you lose some of the sound’s definition. Some people describe this sound as “grainy.”