Δημήτρης Δ.
Supreme Member
- 21 June 2006
- 5,455
Re: Απάντηση: Μηχανισμός Philips CD-PRO2M
"I2S or I-squared-S is an interface found on some transports, such as Audio Alchemy and on some DAC's, such as the Perpetual Technologies P-3A and the Northstar 24/192, but is not a common interface. This interface replaces the "digital coax" or S/PDIF interface that is common for most CD and DVD digital audio. The I2S is a 4-signal or 4-wire interface, consisting of two clocks, a L/R channel select and a serial data signal. There are several advantages to this interface, one of which is that unlike S/PDIF, it includes a bit-clock, which eliminates jitter contributor 7. Another advantage is that it is the "native" interface for most DAC chips. This means that no translation of the data stream need take place in order to drive a DAC chip. This inherently reduces the amount of hardware that the clock and data signals must pass through. As in most audio equipment, simpler is better and this is no exception. The clock jitter is minimized, but not eliminated in systems that use the I2S interface. It is still possible to have significant jitter even with this interface, if it is not well implemented. An interface that converts USB, Firewire or Wi-Fi from a computer to I2S driving a DAC chip directly has the potential to outperform all other current techniques if implemented well."
http://www.positive-feedback.com/Issue22/nugent.htm
Ποιά σύνδεση είναι καλυτερη για εξωτερικό dac για αυτον το μηχανισμο,I2S ή EBU/Spdiff;
"I2S or I-squared-S is an interface found on some transports, such as Audio Alchemy and on some DAC's, such as the Perpetual Technologies P-3A and the Northstar 24/192, but is not a common interface. This interface replaces the "digital coax" or S/PDIF interface that is common for most CD and DVD digital audio. The I2S is a 4-signal or 4-wire interface, consisting of two clocks, a L/R channel select and a serial data signal. There are several advantages to this interface, one of which is that unlike S/PDIF, it includes a bit-clock, which eliminates jitter contributor 7. Another advantage is that it is the "native" interface for most DAC chips. This means that no translation of the data stream need take place in order to drive a DAC chip. This inherently reduces the amount of hardware that the clock and data signals must pass through. As in most audio equipment, simpler is better and this is no exception. The clock jitter is minimized, but not eliminated in systems that use the I2S interface. It is still possible to have significant jitter even with this interface, if it is not well implemented. An interface that converts USB, Firewire or Wi-Fi from a computer to I2S driving a DAC chip directly has the potential to outperform all other current techniques if implemented well."
http://www.positive-feedback.com/Issue22/nugent.htm