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What is s/pdif? - s/ pdif is a type of data link layer and physical layer for the transfer of digital audio signals between multiple devices or stereo components. As described in the acronym, the S/ PDIF format was developed during joint operations between Sony and Philips.
S/ PDIF is an acronym for Sony/ Philips Digital Interconnect Format or Sony Philips Digital Interface. - it is a minor modification of the aes/ ebu( audio engineering society/ european broadcasting union) specification from 198however, unlike the aes/ ebu, the s/ pdif format was developed specifically for home, as it requires, consumer use hardware that is not as expensive as those required by the aes/ ebu model. S/ PDIF is used to transfer digital audio to a variety of home audio equipment. What is S/ PDIF used for? Common devices that can take advantage of the S/ PDIF format include: DVD players, CD players, computer sound cards, and receivers. However, it is also fairly common to connect a CD player to a receiver using the S/ PDIF cables as well.
The most common connection is made between a DVD player and a receiver for high quality Dolby Digital or DTS surround sound. - what are the differences between the aes/ ebu standard and s/ pdif? The two formats differ in their use of cabling, signal level, connectors, subcode information, and maximum resolution. The AES/ EBU standard provided the building blocks for what would become S/ PDIF. However, both formats use biphase mark code for modulation. AES/ EBU can also use a 75 ohm coaxial cable as well.
The AES/ EBU format uses a more robust 110 ohm shielded cable while the S/ PDIF format uses a more consumer friendly 75 ohm coaxial cable or fiber cable. - the aes/ ebu format can take advantage of xlr, d - sub, or bnc connectors while the s/ pdif format uses rca, or toslink connectors, bnc. Subcode information is provided via ASCII ID text for AES/ EBU while subcode information is provided via SCMS for S/ PDIF. The signal level found with the AES/ EBU specification ranges from 3 to 10 volts while the S/ PDIF signal level ranges from 5 to 1 volt. Furthermore, the max resolution for AES/ EBU is 24 bits while the S/ PDIF format provides a max resolution of only 20 bits. The most common digital signal transfer frequency over S/ PDIF is 48 kHz for DAT( Digital Audio Tape) or 41 kHz for CD quality audio. What are the other specifications for S/ PDIF?
There is no defined data rate for S/ PDIF, which uses Biphase mark code instead that allows for one or two transitions for every bit.
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