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Post new topic I've gone Sheerhorn
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Author Topic:  I've gone Sheerhorn
Rick Aiello


From:
Berryville, VA USA
Post  Posted 18 Dec 2005 12:54 pm    
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Well ... at the risk of annoying some folks who dislike the mixing of math & music ...

I feel compelled to share the findings of a rather long (over 2 yrs now) ... and quite tiring "study" of Andy Iona's vibrato.

So if you could give a Rat's A$$ about how Iona was able to generate such a fast, wide and ... in my opinion ...perfect vibrato ... please close this thread now ...


Good ... now, here goes ...


After sampling, filtering and runnin' literally hundreds of sonograms ... of "held notes" by Iona ... I finally figured it out.

Take a look at this "schematic" ...


First: The Extent (depth of changes in pitch) ...

The only way that he could get an extent of 100 cents (and often more) ... is by using a sliding vibrato.

I know, certainly not a ground breaking discovery.

Second: The Rate (speed of pitch changes) ...

Here was the "stickler" ... he was routinely putting out a rate of 6 to 7 Hz ... at will.

If you want to know how fast a 7 Hz vibrato is ... set a metronome at 420 beats per minute ...

The quagmire was ... how he was getting that kinda speed & extent at the same time ???

Well ... all indications point to a Combination Vibrato ... one that has 2 distinct components.

A sliding component for extent ...

And ...

A rolling component for rate ...

Disclaimer: this "rolling" is not the slow roll associated with the use of big, heavy PSG type bars ... this is an very fast oscillation ... with minute changes in pitch

It is summation of these two distinct wave function generating "motions" .... that give Andy Iona ... and to a lesser extent ... Bobby Nichols and Dick McIntire ... their characteristic vibrato sound.

Personally ... I don't have anywhere near the physical dexterity to "pull this off" with a bullet bar ... so ...

I had developed my own technique to get this "fast roll" ... using a Shubb Pearse SP1 bar ... utilizing a very unusual "hold" ...

Problem was ... I couldn't get the extent that I wanted to hear.

Then I turned to flat bars ("flatties") ... which gave me the extent and a faster rate than was possible (for me) with a bullet bar ...

But it was still to slow ...

Well ... by accident ... I grabbed a Sheerhorn dobro bar the other day ... certainly the most unlikely bar for the slow type of Hawaiian style steel guitar playing that I engage in ...

And after messing with a very unusual "grip" ... I was finally somewhat successful ... in at least coming close to my goal.

Although both Jerry B. & D. would probably "tar & feather" me if they saw how I was usin' this bar ... for me ... it's as close as I've gotten yet ...

Granted ... Andy Iona, ... certainly didn't need any trick bars, etc ...

But I ain't no Andy Iona ...

------------------

Aiello's Cast Steel Guitars


My wife and I don't think alike. She donates money to the homeless and I donate money to the topless! ... R. Dangerfield


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Rick Alexander


From:
Florida, USA, R.I.P.
Post  Posted 18 Dec 2005 1:16 pm    
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Rick, let me see if I understand . . Are you talking about 2 distinct and separate oscillation speeds both executed simultaneously by one hand?

Can you post a pic of the unusual grip?
Why is it more difficult to do with a bullet bar?
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Rick Aiello


From:
Berryville, VA USA
Post  Posted 18 Dec 2005 2:27 pm    
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Quote:
Are you talking about 2 distinct and separate oscillation speeds both executed simultaneously by one hand


Yes ... as the bar is moving forward and backward ... it is also rolling back and forth ... simultaneously.

Quote:
Why is it more difficult to do with a bullet bar?


I've seen Jeff Au Hoy and Mike Neer ... both do this with a bullet bar.

Not as fast or deep as Iona ... but the above mentioned do use a combo vibrato ... even if they don't know it ...

Thats why I started "narrowing" my scrutiny of Iona ... looking for this "illusive maneuver" ... cause I've seen these two guys do it live ...

Most folks don't think about such things though ...

I just can't do it with a bullet ...

Quote:
Can you post a pic of the unusual grip?




The "sliding" component ... is using "normal" finger maneuvers.

The "rolling" component ... is controlled by the "knuckle joint ... pressing down and rollin'.

The thumb never touches the bar ... except to push the bar toward the nut ... but is released immediately after.

Although I know better ... here is a sample ... the second song I ever "used this technique " on ...

Sorry about the bad start (waitin' for Neer to begin ... ha, ha), clams, etc ... its just a practice session ...

Sheer-Kaka Falls ...

There's a couple of decent held notes in there ... somewhere ...


------------------

Aiello's Cast Steel Guitars


My wife and I don't think alike. She donates money to the homeless and I donate money to the topless! ... R. Dangerfield


[This message was edited by Rick Aiello on 18 December 2005 at 02:57 PM.]

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HowardR


From:
N.Y.C.-Fire Island-Asheville
Post  Posted 18 Dec 2005 3:45 pm    
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Quote:
at the risk of annoying some folks


Don't sweat it....I do that all the time. Fortunately, you can't get punched or kicked through the monitor......yet


Rickney, take a looky right c'here......

http://www.gssteels.com/models.htm


looks like exm-07 is the shape of your finger on that 'horn.

[This message was edited by HowardR on 18 December 2005 at 03:55 PM.]

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Rick Aiello


From:
Berryville, VA USA
Post  Posted 18 Dec 2005 4:06 pm    
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Howard ...

I ordered on of those custom ones along time ago ... just to have (I like bars ... what can I say).

But I heard he cut himself real bad shortly after ... and I never followed up on it ... no money involved ... so I didn't wanna bother him.

I did just order a "generic" one yesterday ... figured I could re-shape it with my belt sander.

Rickney Bechet out ...
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Rick Alexander


From:
Florida, USA, R.I.P.
Post  Posted 18 Dec 2005 5:02 pm    
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That's a dandy little number Rickney! Your vibrato sounds huge - multidimensional in fact.
Definitely worth pursuing. I have a feeling it's harder than walking and chewing gum at the same time. I'd like to hear more about how it's executed - I can't quite visualize the exact hand/finger/knuckle motion.


What type of bar did Andy Iona use? Flattie?

Quote:
who dislike the mixing of math & music ...

So how do these folks propose we separate the two?

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AJ Azure

 

From:
Massachusetts, USA * R.I.P.
Post  Posted 18 Dec 2005 5:06 pm    
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Rick,
neat stuff on vibrato FYI Gary Swallows of gssteels.com is back in production and healing well. put that order in
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Rick Aiello


From:
Berryville, VA USA
Post  Posted 18 Dec 2005 7:18 pm    
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For y'all to get a much better idea ... have a listen to this ...

Unless you have Vol 9 or a real good memory ... you probably haven't heard this one ....

It was for radio airplay only ... never commercially released ...

That Night in Avalon.

Courtesy of Cumquat Records ... Andy Iona Vol 9

My favorite song for the last couple months, for sure ...

Rick ... if it helps, the bar only touches my hand at the finger tip and palm-side knuckle joint ...

Kinda like rollin' your hand back and forth at the wrist ... while movin' your arm back and forth from the elbow ...

Except its your palm and fingers ... doin' that motion ...



------------------

Aiello's Cast Steel Guitars


My wife and I don't think alike. She donates money to the homeless and I donate money to the topless! ... R. Dangerfield


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Andy Sandoval


From:
Bakersfield, California, USA
Post  Posted 18 Dec 2005 7:48 pm    
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Man that vibrato on that Iona tune is heavenly Rick and I can hear some of it in your playin as well. I think your on the right track. I'm havin a hard time visualizing how your doin it too but I dig the sound of it.
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Rick Aiello


From:
Berryville, VA USA
Post  Posted 19 Dec 2005 5:27 am    
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Well Andy ... you'll just have to come to the 1st Annual Shenandoah Valley Steel Guitar Festival ...

When only the "die-hards" are still conscious ... at the after the concert party I'm throwin' for the bands & my Forum/HSGA friends ...

Rickney Bechet & Derango Reinliebt will be performing a few duets ...

I just gotta learn some of those "Wolfman Songs" that Derango likes to play ...







------------------

Aiello's Cast Steel Guitars


My wife and I don't think alike. She donates money to the homeless and I donate money to the topless! ... R. Dangerfield


[This message was edited by Rick Aiello on 19 December 2005 at 05:32 AM.]

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Rick Aiello


From:
Berryville, VA USA
Post  Posted 19 Dec 2005 3:18 pm    
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I've had a few emails ... asking for more specifics ... i.e. the mathematics involved.

The above diagram was just a schematic ... exaggerated for the sake of emphasis and clarity.

The real math I did was based on isolating upper "partials" ... harmonics in the 3-5K range ... using a spectral analyzer ... in sonogram mode.

Because of the logarithmic nature of pitch ... it is much easier to "see" fluctuations in frequency in the higher harmonics.

A 30 cent change in the fundamental ... translates to a "huge" frequency change in the upper partials ... therefore its easier to see and measure on sonograms.

I then wrote wave functions (equations) to duplicate what was being seen.

The little "plug-in" for Sound Forge that I used ... wasn't capable of translating a selected portion to an equation.

So I had to do it myself ...

Here are the "key" wave functions ... that I used to illucidate the generalized equation that describes this "Sliding & Rolling" phenomenon.

From the "slowest" to "fastest" vibratos I sampled:



These 4 sections ... are taken from different Iona tunes ... each, a single held note.

From these ... I derived this "basic" 2-D equation:

f(X) = sin(X) + sin(nX) ... where n is in the general range of 5 to 7.

"sin(x)" ... can be thought of as the sliding component ...

"sin(nX)" ... can be thought of as the rolling component...

Here is a 6 hz vibrato ... as represented by this 2-D function:


Although the sliding component is not "6 Hz" ... the ear precieves it as a 6 Hz vibrato ... because of the combined effect of sliding & rolling ... simultaneously.

Now WAKE UP ... wipe the drool from your mouth ... and go practice your steel playin' ...

I sure need to ...


------------------

Aiello's Cast Steel Guitars


My wife and I don't think alike. She donates money to the homeless and I donate money to the topless! ... R. Dangerfield


[This message was edited by Rick Aiello on 19 December 2005 at 03:40 PM.]

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HowardR


From:
N.Y.C.-Fire Island-Asheville
Post  Posted 19 Dec 2005 4:32 pm    
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Quote:
using a spectral analyzer in sonogram mode



Last time I used one of those, I ended up crawling out of a window......
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