Recent content by DonH56

That is painful (literally); glad everyone is OK. It's been long enough that I don't remember what I had in mind at the time and am too lazy to wade back through the posts. I would certainly want to avoid sending HF energy through the tweeters, but in the real world conventional tweeters with...

I could be a millionaire if I just had less ethics and morals.

Most SPL meters have a short (sometimes long) shield around the mic that makes it more directional to limit the capture to a small'ish area (volume). Unlike many measurement mics, which typically have broad response (omni's are commonly used), an SPL meter is generally used to measure a specific...

^^^ Make sure the meter can read the audio band, or at least as high as you want to test. Many cheap meters, and even some expensive ones, target AC power lines and are limited to ~100 Hz or so.

Their refreshing approach to audiophile mythology is nice: https://nll.soundestlink.com/view/66295a80a1c51e5a2898f295/5cf925e815b61cc5a2a2ad0c?signature=fff21862a9f7f26e5702fa0339b4f90b2cfbf3a01aa7fe16aeede245aaef1ade

I'd be careful using the OSHA guidelines for music listening. If you read the actual OSHA docs, their levels are meant to retain the ability to converse as we get older, not to discern fine musical nuances and such over a wide range of dynamics and frequencies. They are very much an upper bound...

Poor objective measurements do not always equate to lack of listening preference, though studies by Toole et. al. show most of us prefer a more even response. Many folk have not heard a flat (anechoic) speaker with good off-axis response so have no basis for comparison. Peaks and valleys in the...

The viewpoint from Benchmark: https://nll.soundestlink.com/view/66295a80a1c51e5a2898f295/5cf925e815b61cc5a2a2ad0c?signature=fff21862a9f7f26e5702fa0339b4f90b2cfbf3a01aa7fe16aeede245aaef1ade

The Klippel speaker measuring system is a proven objective assessment tool, and Erin and Amir have worked to ensure they understand its proper usage. The Heresy was originally designed to be a center speaker in a three-channel system and that influenced its design. Virtually all of the Klipsch...

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...