Originally Posted by bfreedma
Stereodude can correct if I'm misinterpreting, but I think he was being facetious, i.e. people claiming that cables have properties that change sound in a way that would mimic what DSP actually does.
You got it. HDMI cables transmit digital data. 1's and 0's. If we assume for a minute that cheap / low quality cables randomly caused 1's to become 0's and 0's to become 1's they would not manifest themselves in an organized fashion. However, the people who claim to hear or see differences caused by HDMI cables tend to describe an organized phenomenon like sharper picture, more vibrant colors, better bass, etc, etc, etc... These outcomes are statistically impossible without a DSP that performs deliberate non-random operations on the data. Problems caused by cheap low quality cables would show up likely show up as static in the image (flickering pixels), a loss of sync (connection dropout), or similar not the organized deliberate behaviors described by people who "see" the difference.
Don't believe me? Grab a box of random loose Legos, shake it up for a while, stir it with your hands, whatever you want, and then dump it on the floor. Let us know when a complete, put together, organized item falls out of the box at the end.