Lloyde, I agree with you that there are definitely a lot of information below 40Hz in most music even though the natural fundamental of instruments used do not go below that.
Technically classical music probably have more instruments that can be played with fundamentals down below 40Hz.
So let say, in pop music without synthetizer, the extra information below 40Hz, are those something that is naturally supposed to be there or are there mostly created artificially from EQ or or sound mixer board (in live performance)?
Any full size piano (upright included) would be able to play 28Hz since they all go down to A0. Bosendorfer imperial grand actually has 97 keys instead of the usual 88 keys so officially it will play down to C0 which is about 16Hz. Not that there is that many piano piece that requires anything below A0 except few that Bosendorfer commissioned. I think Bosendorfer believes that these lower keys, even if they are not used directly, will give sympathetic vibration so the piano will sound fuller and more powerful, I think.
Technically classical music probably have more instruments that can be played with fundamentals down below 40Hz.
So let say, in pop music without synthetizer, the extra information below 40Hz, are those something that is naturally supposed to be there or are there mostly created artificially from EQ or or sound mixer board (in live performance)?
Any full size piano (upright included) would be able to play 28Hz since they all go down to A0. Bosendorfer imperial grand actually has 97 keys instead of the usual 88 keys so officially it will play down to C0 which is about 16Hz. Not that there is that many piano piece that requires anything below A0 except few that Bosendorfer commissioned. I think Bosendorfer believes that these lower keys, even if they are not used directly, will give sympathetic vibration so the piano will sound fuller and more powerful, I think.