racerxnet wrote:
"If you are concerned about noise from the PC, you can put a ferrite core on the cable to the sound card. Use a Toslink or SPDIF cable to the DAC. That should eliminate the interference problem for the majority of users."
This technique will certainly attenuate HF noise from the computer, however it will actually make the jitter worse. It will slow the risetimes of the S/PDIF or AES signal edges and cause the receiver to switch at less accurate/predictable times as a result.
The best solution is to isolate the digital conversion and final clocking from the computer completely. This way, the jitter can be made extremely low. Either USB or Wi-Fi accomplishes this.
Steve N.
Empirical Audio
Manufacturer
"If you are concerned about noise from the PC, you can put a ferrite core on the cable to the sound card. Use a Toslink or SPDIF cable to the DAC. That should eliminate the interference problem for the majority of users."
This technique will certainly attenuate HF noise from the computer, however it will actually make the jitter worse. It will slow the risetimes of the S/PDIF or AES signal edges and cause the receiver to switch at less accurate/predictable times as a result.
The best solution is to isolate the digital conversion and final clocking from the computer completely. This way, the jitter can be made extremely low. Either USB or Wi-Fi accomplishes this.
Steve N.
Empirical Audio
Manufacturer