That is a false way of saying it. Because then you are unpacking what dBs are, which is fascinating, but not how humans perceive sound. We use dBs exactly because it approaches human experience of sound better (although still shitty) than sound pressure would.
A better logarithmic system would use base 2, I think phons tried to popularize that, but signal processing calculation with a base 2 log is less convenient than a base 10 log. So I think that is the reason.
For who wants to know: sound perception doubles every 10dB so. 30db of dynamic range is about 8 times as much dynamic range from the perceptual perspective.
Objectively we care about the amount of information in the signal, not air movement. Air movement is just a medium which conveys information. It's not just "subjective perception", it's the meaning of the process.
When someone claims that vinyl has less than half the DR of a CD then I think it's important to clarify how big of a difference it actually is. I would imagine HN would care about 16bits vs aprox 10bits of dynamic range.
About right, but more importantly it's highly dependent on factors like pressure, temperature and salinity, all of which change in relevant ways in the ocean depths.
People imagine sonar like it's radar, where you get clean bearings and distance readings, but it's so much noisier and hard to decipher.
And yet it really does travel long distances which is both good and bad if you're a submariner.
Salinity, temperature and pressure aren't normally large factors for cetaceans, no.
If you're referring to active sonar, that's an issue for anything with ears under the water. But animals themselves also can make loud noises (e.g. the sperm whale can reach 230+ dB), as can surface ships with their own active sonar kits.
AIUI the problem has been the USN making absolutely huge noises and the relevance being that the noises carry very long distances, affecting wide areas of habitat.
Are you the kind of guy that says that all things that serve no purpose except for entertainment should be banned?
I am of the opposite school. I think practical things are fine and dandy, but the things that make us human, make life worth living, are all "useless".
Nah, its not that they were trespassing. Its that they were trespassing while shouting that they were going to hang pence. It was because they were part of a group that attacked police officers. The goal of the trespassing counts.
There are different narratives describing J6. Not everyone who entered the capitol was calling for a Pence hanging. Some who never entered the Capitol were later arrested for somehow trespassing on the surrounding grounds (because of unannounced security protocols). The number of undercover FBI agents present among the J6 protestors has never been revealed, and the FBI has a history of inciting terror to obtain convictions.
Not everyone was calling for the murder of a VP, but everyone who did is walking free - with everyone who attacked the police. Which narrative is that?
I’d hope, as I think you do, that those only guilty of association would find themselves exonerated.
Its because the president used to have a modicum of respect for the house and the Senate.
So the president did have the sole right to send military anywhere on the planet and even launch nukes without any need for congressional permission. This is by design. But the other presidents were a bit less crazy so we never noticed.
For who wants to know: sound perception doubles every 10dB so. 30db of dynamic range is about 8 times as much dynamic range from the perceptual perspective.
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