Showing posts with label string gauges. Show all posts
Showing posts with label string gauges. Show all posts

Tuesday, March 6, 2012

All signs point to my harp actually having less tension on it.  Whew.

From http://liutaiomottola.com/formulae/tension.htm
A few things should be apparent from the formula:
1. Everything else being the same, pitch increases as tension increases;
2. Everything else being the same, tension increases as scale length increases;
3. Everything else being the same, tension increases as unit weight increases, thus a heavier gage string will be under greater tension as a lighter one of the same length tuned to the same note;

This is not tension as in how it feels to play - that is referred to as compliance of the string, and that is the subjective "these strings feel tight and are more difficult to play" feeling the musician gets.
Worked on Prelude 1. Again. The good thing is I have it completely memorized with the old finger markings, and it seems to be translating well to my new finger patterns.  I have a feeling, though, that it will be like visiting a foreign country and speaking a different language.  The first couple days it will be fine due to severe concentration on wrapping your head around a different way of communicating. But then the third day will be completely bonkers - your mind can't figure out if you're speaking the new language or your native tongue - and you end up saying things like "s'il vous пожалуйста". 

We'll see how it goes.

Also, I got a tension chart from Bow Brand and their string lengths are almost FOUR INCHES longer than mine (up to 1" in the upper registers).  I'm thinking this will have a severe effect on the amount of ft/lbs pulling on my soundboard.  As well as on my fingers!

Tuesday, February 21, 2012

Tried doing more string calcs today, but need either the density of material (google turned up a range of 1276-1360 kg/m3 for gut and 1000-1140 kg/m3 for nylon) or the weight in lbs/in.  I am NOT weighing all 45 of my harp strings individually with a vintage post office scale from Goodwill.  Will call Vanderbilt and/or L&H tomorrow during open hours - the left coast is so behind everyone else.

Worked more on technique today and building up muscles to record Prelude 1. Prelude 3 is equally challenging.

Tuesday, February 14, 2012

Finished up the string meas, the diameter is .01" less stretched.  Made a few charts to double check my numbers were right. Next up, calculations!

Tuesday, February 7, 2012

Still trying to record Prelude 1. It's hard to get any useful takes because my hands cramp up playing it after one time through.

Working on Prelude 3 and trying to coordinate soundboard taps. I'm definitely not a percussionist and they're easier to play faster.

Measured some string lengths, but had to stop because I was bending and craning my neck repeatedly.  String lengths may vary by up to 1/8" because I don't have sn accurate tool to measure them. What would you use?

Monday, January 16, 2012

Harp is finally restrung AND almost settled and string gauges measured.  I think I will measure the string gauges under tension, too, but after my harp has really settled. Maybe in a month? Or a couple weeks since then it will be next month.  This year is already flying by.

I exercised mostly today because Audacity was not playing my file properly so I couldn't hear what I wanted to work on.

Wednesday, January 11, 2012

Harp is finally restrung "properly" after having been strung "more properly" - moving the strings up one hole in the soundboard centered the strings in the discs up to 1st octave G!  I would expect harps normally only have this happen in the 7th - 4th octaves, and my soundboard is really not bowed out by much at all.

I'm also measuring string diameters as I'm cutting off the ends in prep for calculating tension/length/pitch.

This also means I could start recording again.