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#1
12-05-2014, 02:50 PM
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Now that's cool
I'm watching joe Walsh tune a Gibson on utube he's tapping the string with his finger and the string he's tuning too and you hear the wavering sound he tunes till they vibrate and sound the same. I think back. I'm sitting in a cherrypicker crane and it's purring about half throttle. I start low and go up humming. In my head I hear the same wavering sound till I reach the same (note/frequency) and then we were in perfect tune, me and the picker. Now I understand what those guitarists were doing when they making the strings ping when tuning. Ain't science great?
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#3
12-05-2014, 03:07 PM
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Now that's cool
What you're hearing is a "beat". When two sounds of similar but different pitch are played on two strings, you hear a beat whose frequency is equal to the difference between the two pitches. E.g. 440Hz (A) and 443Hz - you'll hear a 3Hz beat (3 times per second). As you tune closer, say, 441Hz, the beat drops to 1Hz (once per second). As you slowly approach 440Hz, you'll hear that beat slow down until it disappears when the two strings are in unison.
It's a really cool bit of physics, having to do with the way two sine waves are summed together.
__________________
Some might call me a "Webber Guitars enthusiast".
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#4
12-05-2014, 03:35 PM
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Quote:
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