AVS Forum Addicted Member
Join Date: Oct 2006
Mentioned: 49 Post(s)
Tagged: 0 Thread(s)
Quoted: 5330 Post(s)
Originally Posted by 12B4A
Further in that thread there's also a component tweak from Eljo for one of the A/D converters that measurably decreases bass distortion at that part of the signal chain. It may be inaudible given that it goes from ~-82dBFS to -100dBFS in the region where the speaker starts to roll off in the bass.
Thanks for the link.
While it is nice in theory to keep all forms of distortion low, I'd tend to agree it is unlikely to be audible in any real world use for three reasons:
A. Mechanical distortion from the driver itself is several orders of magnitude higher than the electrical signal's distortion in the bass, even on state-of-the-art speakers.
B. 82 dB down is very quiet in the first place so reducing it even further doesn't do anything when the first level wasn't audible in the first place.
C. The ear's sensitivity to sound, including distortion, plummets in the bass range hence the creation of the A-weighting curve (in blue in the graph below from wikipedeia) to try to get more significant numbers representing how we actually hear rather than just raw numbers.
In A/V reproduction accuracy, there IS no concept of "accounting for personal taste/preference". As art consumers we don't "pick" the level of bass, nor the tint/brightness of a scene's sky, any more than we pick the ending of a novel or Mona Lisa's type of smile. "High fidelity" means "high truthfulness", faithful to the original artist's intent: an unmodified, neutral, accurate copy of the original master, ideally being exact and with no discernable alterations, aka "transparency".