The raising pitch over three centuries is well documented. The reason usually given is to sound more exciting[brilliant ]
I wasn't aware of that reason. I know that there have previously been many lower pitch standards, but there have also been some higher (452 and 457)
Louis 14th's Versailles Opera played around 392, as you wrote there where higher pitches as well, many of Bachs' Cantatas have the organ and strings at 465 and the woodwinds at 392,these were new instruments at that time in Germany,brought by Protestant Musicians escaping the expulsion in France and bringing their "new" instrument with them, and it cost a lot of church money to buy the lead to lengthen the organ pipes to a lower pitch. In the 19th C. the french and English got together to try and create a standard pitch, they worked in vain, Von Karajan raised the berliners to 445 and Vienna had to follow to sound as sparkling. Most of the effect was PR, of course-The Maestro Myth.
I didn't think it had anything to do with the sound being more exciting, as I don't think most people can hear any significant difference when used as a standard. I think some people may notice if, e.g. they heard a higher pitched tune immediately after a lower pitched one, but again, I'm sure most people wouldn't.
Sadly I must agree completely with that, 50+ years of Muzak ruined the publics' ears. But 200 years ago composers had to gain favor with a nobleman to provide music at his estate or town house. The listening public were the minority that had a lot of money and had studied music them selves so they could hear the pure thirds we butcher today.
I know a few people with perfect pitch who can tell, but most of those think of i as a bit of a curse rather than anything good.
Sorry to pop anyones bubble but as you can imagine there is no such thing as "perfect pitch". I new a girl in High School who played Bassoon and claimed to have perfect pitch, when she wanted to join the old music ensemble at UTexas she found it impossible to adjust to the lower pitch. A real pity as she was a great musician and friend.
What can make a difference is when one section tunes very slightly higher than the main body of the band (e.g. 442), I've often heard this with brass sections.
One of my teachers was the solo Bassoonist in the Clevelend Orchestra and told me to play at the correct pitch ,very softly, and the brass would be corrected by Mazzel, the conductor.
I never mess with the A 440 standard, as I never know when I may want to add a real instrument. If I'd started at some other pitch this would be really awkward if I wanted to add a saxophone overdub.