If you're building an audio cable your signal will peak out at a few kHz, so the cable acting as an antenna and picking up a signal in the MHz range isn't an issue. Similarly, you're not transmitting anything significant either. But a ground loop can easily ruin your day.
If you're building a cable for multi-gbps data transmission, that ground loop noise might as well not exist - it's basically DC. But ground your shielding at only one end, and suddenly you're ruining everyone's wifi!
Building a device which needs high-speed data on one side, and analog audio on the other side? Good luck...
If you're building an audio cable your signal will peak out at a few kHz, so the cable acting as an antenna and picking up a signal in the MHz range isn't an issue. Similarly, you're not transmitting anything significant either. But a ground loop can easily ruin your day.
If you're building a cable for multi-gbps data transmission, that ground loop noise might as well not exist - it's basically DC. But ground your shielding at only one end, and suddenly you're ruining everyone's wifi!
Building a device which needs high-speed data on one side, and analog audio on the other side? Good luck...