I'm running a MSI 990FXA-GD80 board with a decent audio card. Sound is outputted via S/PDIF Digital Audio Coax Cable to a digital to analog converter, which enters an external EQ and then an external amplifier.
I first noticed some line noise years ago which was traced back to an older, wired laser optical mouse. Unplugging that mouse made the signal noise went away. I eventually opted for a modern wireless Logitec micro mouse that uses a different laser system (not the red laser, it might be infrared or something as no visible light is emitted).
Anyways, if listening through external speakers, I can't hear anything unwanted. However, with headphones connected, there's a constant blipping sound (it very quiet but obvious on dead silent audio tracks like silence in a movie) that's semi irregular. On rare occasions it stops, only start back up a second later and it's very annoying.
I've tried unplugging the modem, unplugging the blue tooth adapter for the mouse, physically turning mouse off, unplugging the key board, and nothing is working. Sometimes while using the mouse, the sound will seemingly "attach" itself to what the mouse is doing. Like say clicking a sentence and dragging mouse cursor to highlight it, the sound will be affected.
I'm fairly patient, but the sound is getting annoying and ruining the headphone experience and I'm not sure how to stop it? I'm thinking a ground issue? Ideas?
I first noticed some line noise years ago which was traced back to an older, wired laser optical mouse. Unplugging that mouse made the signal noise went away. I eventually opted for a modern wireless Logitec micro mouse that uses a different laser system (not the red laser, it might be infrared or something as no visible light is emitted).
Anyways, if listening through external speakers, I can't hear anything unwanted. However, with headphones connected, there's a constant blipping sound (it very quiet but obvious on dead silent audio tracks like silence in a movie) that's semi irregular. On rare occasions it stops, only start back up a second later and it's very annoying.
I've tried unplugging the modem, unplugging the blue tooth adapter for the mouse, physically turning mouse off, unplugging the key board, and nothing is working. Sometimes while using the mouse, the sound will seemingly "attach" itself to what the mouse is doing. Like say clicking a sentence and dragging mouse cursor to highlight it, the sound will be affected.
I'm fairly patient, but the sound is getting annoying and ruining the headphone experience and I'm not sure how to stop it? I'm thinking a ground issue? Ideas?