Introduction
Audio interference (as defined below under "Symptoms") is a defect in a system due to hardware, software or firmware problems. It is not an inevitable consequence of using an integrated audio codec or sound card.
Purchase of a sound card or external DAC is not necessary to fix this issue in most cases.
STEP 1: Sanity Check (START HERE FIRST)
Before diving into an exhaustive troubleshooting process, do some basic pre-checks:
Ensure that audio
Start here:
The Audio Board's Frequently Asked Questions →
7.1 Headphones? →
Links in bold text indicate recommended places to start reading (in no particular order).
Please report broken links by leaving a comment or sending me a pm.
Books
Loudspeaker and Headphone Handbook (pdf)
The Audio Expert: Everything You Need to Know About Audio
Spatial Hearing - Revised Edition: The Psychophysics of Human Sound Localization
Principles of Digital Aud
