So after my last post about tuning forks and strobe calibration, this last week i had 2 customers hand me their own tuning forks to check my strobe.  For giggles i tapped each one and put them on my strobe… turns out that all 3 were different pitches!!  Mine was spot on, one was 3 cents higher but the other one… AMAZING but true… was a whopping 22 cents flat!  So not only does cold affect the tuning but i’m finding out that because all tuning forks are stamped as calibrated that “It Ain’t Necessarily So” (a fun jazz tune).  My pursuit turned to the internet where i found a few sources for A440.  One… believe it or not is on youtube! I know hey? Go figure… Check out this link:

http://www.youtube.com/watch?v=V-kRShXR6qA – it simply is a computer generated sine wave – 30 seconds of A440 frequency.

You can also click on the picture to take you to Seventh String tuning fork website… kinda neat.  It helped reassure me that both my strobe and my tuning fork are “on”.  Whew!