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Pitch of wound vs plain strings

1488 Views 8 Replies 7 Participants Last post by  Nick
I was just wondering, let's say a two strings are the same diameter, say .020, and they are at the same tension, what will the difference in pitch be between a wound and plain string?

I almost want to say that the wound would be slightly higher because by having tiny gaps in the surface of the winding, it would therefore have less mass. Also, based on that, I would think that the smaller the diameter, the less the difference between the plain and wound.

Now I've never tried this or anything and am basing all my assumptions just on the physics of it, which I would think are correct. Can anyone give some more info on the subject?
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A plain string of the same diameter will have a higher tension than a wound one, if they're tuned to the same note. If you tune them to the same tension the wound one will be tuned higher.

http://hikkyz.net/misc/stringassembler/

Go there if you want to crunch some numbers.
I was just wondering, let's say a two strings are the same diameter, say .020, and they are at the same tension, what will the difference in pitch be between a wound and plain string?

I almost want to say that the wound would be slightly higher because by having tiny gaps in the surface of the winding, it would therefore have less mass. Also, based on that, I would think that the smaller the diameter, the less the difference between the plain and wound.

Now I've never tried this or anything and am basing all my assumptions just on the physics of it, which I would think are correct. Can anyone give some more info on the subject?
The windings have nothing to do with the pitch, the core of the wound string does it all... If you had a wound string with the same size core as an unwound string they'd be the same pitch at the same tension...
A plain string of the same diameter will have a higher tension than a wound one, if they're tuned to the same note. If you tune them to the same tension the wound one will be tuned higher.
That confirms my assumption, at the same tension, wound will be higher because it has less mass. I'm wondering how high I can comfortably tune a .017 or .018 wound.
The windings have nothing to do with the pitch, the core of the wound string does it all... If you had a wound string with the same size core as an unwound string they'd be the same pitch at the same tension...
lolwat?
No. No not at all lol.
Just checked. The core of a Low E from a set of D'Addario EXL110s (standard 10-46 set) is a 0.017, the same exact gauge as the G string. You really mean to say that if you tuned a Low E string up to the G that a g string sits at, they'd have the same tension?


Adam, I've been drinking all week at work, and just got home from a tequila tasting so maybe i shouldnt talk, but how the fuck drunk are you?? :lol:
Thanatopsis said:
I almost want to say that the wound would be slightly higher because by having tiny gaps in the surface of the winding, it would therefore have less mass.
That analysis is correct. The plain string in your scenario would have a lower pitch because it has a higher linear density.

The windings have nothing to do with the pitch, the core of the wound string does it all... If you had a wound string with the same size core as an unwound string they'd be the same pitch at the same tension...
Not quite. For fixed length and tension, the frequency is determined solely by the linear density of the string. Doesn't matter what it's made of or how it's made.

Vibrating string - Wikipedia, the free encyclopedia

So in the case you're describing the wound string would have a lower pitch.
The core takes up the tension. You can think of the winding as addition of mass without sacrificing flexibility too much. Added mass has the effect of slowing the string compared to the core alone at a given tension. Slower speed means lower pitch.

The reality would probably be more complex due to windings not being entirely free of tension and other factors. Quite a while ago there was a discussion on /7/ about thicker unwound strings no longer acting as just a string.
IMO anything above a 20 has to be wound or its absolutley horrible to play

that may not really be on topic but oh well!
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