Firstly, your friends play in an orchestra. A symphony is a form of orchestral piece. Also, I know many, many orchestral musicians, and a few professional ones.Pens wrote:Source. I know right now three concert violinists who tune and intonate by ear. And they play professionally in a symphony. This whole concept is fucking surreal. You all can't actually believe this.BacchusPaul wrote:Before the invention of digital/strobe tuners people would use a clock or other such time piece to tune instruments. The human ear is good, but it has never been good enough.
A violinist can't but intonate by ear. That's the nature of the instrument. Violinists will tune by ear, but it's never accurate, hence the gorgeous sound of a string orchestra, that sort of fuzzy sound you get when you have fifty or so string instruments that all are all ever so slightly out of tune with each other. It's the same with any large ensemble, for instance, brass instruments will always be out of tune with each other because they are all slightly different shapes, made from different pieces of metal, by different people, being played by different people, and are all different temperatures (oddly, on a brass ensemble, the slightly out of tune-ness does the opposite and gives a brash, striking sound. That's the nature of the instruments, I suppose)
I'm not going to give you a source for people using time as a means of tuning instruments, as any sources I have access to, you don't. There is probably documentation on the internet if you want to see what you can find, but the sources I've read are all articles taken from journals and written by the worlds leading musicoligists. They discuss temperament, even temperament and tuning techniques from say, oohhh, the sixteenth century to the eighteenth.
I'm not saying that the ear isn't adequate for most purposes, I'm saying that people have always tried to have a more accurate and measured way of doing it. Bach tuned his harpsichords by ear, without so much as a tuning fork, and it worked for him. In other circumstances, that wouldn't be practical (say, tuning a church organ to a specific temperament).