Recent content by DonH56

Uh, for headphones, John? Just how the heck loudly do you listen? :D @Quinton595 : As for the question of loudness, I have seen some fairly cheap headphone busts for measurements, but they were still a few hundred dollars (USD). This is not my field, but in the primordial past I built a very...

Sones are a standard unit for subjective loudness, akin to phons (also a measure of loudness). Commonly used for SPL measurements and comparisons, though most charts use phons converted to dB. See e.g. https://en.wikipedia.org/wiki/Sone

Just read this on a thread named "Fuse and Cable Directionality" in another forum. No comment. --- Audiophile Fuses | What's Best Audio and Video Forum. The Best High End Audio Forum on the planet! (whatsbestforum.com) Has an uneducated audiophile who posted nonsense that all fuses are...

IMO this is not the place to debate how Lipshitz and Vanderkooy differ in their definitions from the IEEE. They treat the quantization error as highly-correlated to the signal, which is true to the extent that the signal and sampling frequency are correlated, but in general the signal frequency...

The references I cited (IEEE Standards) distinguish quantization noise from other error sources that cause distortion (e.g. harmonic, intermodulation, INL/DNL, and so forth). If you perfectly quantize the signal there will still be quantization noise, but no other errors (distortion). Dither...

I am only vaguely familiar with it in the photo world so maybe they use different definitions? I am sure they use different standards for reference. Quantization error leads to quantization noise, but also distortion; those IEEE Standards list a bunch of error sources. Not as bad as jitter; the...

All the engineering societies and references I know use "noise" for quantization noise. Whilst mathematically related to the signal and sampling rate, in general there is no common denominator between the fixed sampling rate and the signal, so the noise tones (spectra) created are uncorrelated...

The image (output) filter integrates, i.e. smooths, the waveform so it is a continuous curve. The stair-step waveform before the image (output) filter is due to quantization and the high-frequency content creating those sharp edges as the DAC switches state (values). Sharp edges require very...

Wow, glad you are OK, @BDWoody ! Heart attacks can be hard to detect and like you I'd likely blow off the symptoms. Thanks for the reminder! My long-ago EMT and less long-ago Red Cross training comes to mind. Cardiac arrest, a more severe condition than a heart attack but likely if you ignore a...

The PCIe, SATA, USB, Ethernet, SAS (if you have such), devices inside your computer all use differential signaling because they reject common-mode noise. Your audio DAC (almost certainly) has a differential output, converted to signal-ended by the output buffer if desired. Hand-waving thread...

It's the difference between the actual signal and the quantized (digital) value. This article might help: https://www.audiosciencereview.com/forum/index.php?threads/digital-audio-sampling-101.1919/ The "stair steps" should never appear in the final DAC output due to the anti-image filter that...

I am not a speaker designer, but have dealt with a few over the years, and piddled with a few speaker designs. My first subwoofer was a servo-controlled DIY thing I made ca. 1980 and the whole "speed" debate was much on my mind at the time. I was taking a grad course in acoustics, which I...

Neutrik makes SpeakON connectors that handle 10 AWG wire, I'd probably just look for the larger versions of SpeakONs. I am not up on the latest line but have had to switch models in the past to fit a set of 10 AWG cables after buying without realizing all the different flavors they make.

I would have expected the Fosi to be damaged if anything by having a large'ish AC power input rather than DC. Drop a note to Schiit and see what they say. There may be a fuse inside; I do not see anything on the exterior.

I have presented a number of papers at various conferences mostly long ago. The gov't usually retained rights to my work but allowed me to keep copies and publish at will so long as it was not classified. Of course, the company for which I worked usually had their own claims, which usually...