I could make a lot more mileage out of that musically than caring about inharmonicities above 13-14th fret on a low B string on a bass that's too short.
This again understates the problem of inharmonicity. It is a problem on standard scales (34"/35") and not only above the octave on the B.
I wrote:
> Inharmonicity is caused by stiffness
Yes, i agree with you.
What i mean is that construction, gauge and vibrating length affect stiffness, so by mentioning 'stiffness' i do not need to also mention 'length'.
As you play up a string its vibrating length decreases and it becomes stiffer, because its width becomes larger relative to its vibrating length, this is what causes inharmonicity to increase.
If you hold a string in your hands and bend it, the shorter the length you try to bend the stiffer it becomes.
The comparison he does with piano strings has its own flaws when considering bass strings on a bass guitar:
Kemp Strings only referred to lumped piano strings briefly as a somewhat similar approach, which they are.
It does not matter how different the situations are because the lumped guitar strings are backed up by theory and are shown to work by experiment.
The accuracy of the comparison is irrelevant and does not delegitamise the lumped guitar strings. I think you are making too much fuss about this reference.
a) Piano strings is optimized for one open note at once. No one ever frets a longer string to get a shorter note. The inharmonicities changes as you fret down at different nodes one the string
As you play up the string, the lump becomes longer relative to the vibrating length. It seems to me this would increase the effect on the higher harmonics, which compensates for the increase in inharmonicity.
The effectiveness is probably compromised somewhat, but the experiments show the lumped guitar strings reduce inharmonicity along all the frets.
b) the added mass technique - lump - on these piano strings was just made to compensate for the open wire at both ends of the piano string. No bass string on bass guitar I know of has open core at both ends of the string.
Probably not 'just', lumps on piano strings would reduce inharmonicity even without exposed cores or tapering.
It seems to me the lump being on one end only works in a similar way to lumps on both ends.
c) The piano strings that are suspected of these inharmonicities is just by it's too short length and has nothing to do with gauge. These lumps are only on upright pianos
This point is irrelevant because wherever there is problematic inharmonicity the approach of lumped strings is valid.
Bass guitars are indeed too short when playing up the B, and certainly for strings lower than B.
They do. The reason tapered strings came around, especially low B and low E was that the bridge saddles diameter wasn't large enough to accomodate them.
I see what you mean now, thanks.
As I don't know anyone has yet produce a bass bridge saddle where you can relocate the ball end without moving/retuning/reintonating it all in one package, such ideas like a) taper b) lump is totally moot.
Not totally moot. Despite the problem of the length of tapered section in the vibrating length, the advantages of tapering still outweigh that disadvantage for many people, like myself.
The lump can still be effective despite differing lengths of tapered section in the vibrating length, although it might be compromised.
When they build a bass that incorporates the bridge designs of headless basses where you actually have to move the ball end while tuning, these strings as well as tapered will have some slight merit perhaps. Not until then no one's going to shove down my throat that this will work. Lumped or not.
Scientific experiment has shown the lumped strings work, see the scientific paper and the video.
Tapered strings sell well so work for those who like them.
But its okay if you do not personally like either.
BTW I can go out and buy led balls that you put on fishing lines and put on my existing bass strings. And line them up perfectly just in front of the saddle, and achieve the very same results.
Not really, as the lump has to be of a specfic length and mass, as determined by theory, to work properly.