Music is a whole bunch of different frequencies. I don't understand this. Please explain.
Discussion
440 Hz is the frequency of A. Everything is tuned relative to that. It would seem the ISO (International Organization for Standardization) selected that frequency over the already accepted 432 Hz in 1936.
It further appears that there might be some "Inharmonious Resonances" because of this adoption of 440. I do not know if that's true but I think it may be worth thinking about.
440 was a standard going back to the early 1800s. Prior to that different regions in Europe used a variety of frequencies, there wasn't a standard of 432 to my knowledge. 435 was set by law in France for a while. Some orchestras would tune to 450 to sound brighter. Italy would tune low to make it easier for opera singer to hit high notes. Eventually they settled on 440 so musicians from different regions could play together, and instruments from one region could be used in another.
It's also often cited that ancient instruments were tuned to 432. Which is interesting because you couldn't actually measure a second until mechanical clocks in the 16th century, let alone measure hz to tune properly.
I see this posted regularly by hippie chicks who think crystals resonate energy, but can't say what energy, or what they are resonating. Woo woo 🚂
Don't even get me started about tuning systems 🥴
