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Author Topic:  Tuning: Some Examples
Larry Bell


From:
Englewood, Florida
Post  Posted 24 Jul 2005 3:15 pm    
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Experiment 1:
Drone Chords
Open E 8 6 5 / 6 5 4 / 5 4 3
Open C# (same strings)
Open A (same strings)
G NP at 3rd fret
G A+F at 6th fret
G A+B at 10th fret

Tuned JI by harmonics http://www.larrybell.org/mp3/ji.mp3
Tuned ET all notes to 440 http://www.larrybell.org/mp3/et.mp3
Tuned with my hybrid between JI and ET http://www.larrybell.org/mp3/tampered.mp3

Experiment 2: A real tune: Bud's Bounce
JI http://www.larrybell.org/mp3/buds_ji.mp3
ET http://www.larrybell.org/mp3/buds_et.mp3
"Tampered" http://www.larrybell.org/mp3/buds_tampered.mp3

Hope this helps give a sound to what we've been discussing.

------------------
Larry Bell - email: larry@larrybell.org - gigs - Home Page
2003 Fessenden S/D-12 8x8, 1969 Emmons S-12 6x6, 197? Sho-Bud S-12 7x6, 1971 Dobro, Standel and Peavey Amps

[This message was edited by Larry Bell on 25 July 2005 at 06:07 PM.]

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Bobby Lee


From:
Cloverdale, California, USA
Post  Posted 24 Jul 2005 3:50 pm    
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Your A pedal sounds flat to me in the JI example, Larry. What harmonic did you tune it to?
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Larry Bell


From:
Englewood, Florida
Post  Posted 24 Jul 2005 4:04 pm    
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6th string B pedal 4th fret harmonic -- about 16 cents flat as I recall. The A was about 4 cents flat to begin with.

Checked it twice -- before and after playing the passage. I think it's just beating against the tempered piano. Sounded fine on its own, both A+F and A+B.

------------------
Larry Bell - email: larry@larrybell.org - gigs - Home Page
2003 Fessenden S/D-12 8x8, 1969 Emmons S-12 6x6, 197? Sho-Bud S-12 7x6, 1971 Dobro, Standel and Peavey Amps

[This message was edited by Larry Bell on 24 July 2005 at 06:17 PM.]

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Bob Carlucci

 

From:
Candor, New York, USA
Post  Posted 24 Jul 2005 4:20 pm    
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.. Larry, I pride myself on my ear.. The "tampered" examples of both excersizes were NOTICABLY "sweeter".. more pleasing to the ear. I am not familiar with this "hybrid" tuning style of yours.. I may have missed something if you posted about it.. I would appreciate you elaborating a bit,if you would be so kind.. Nice playing!... good tone too! bob
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Larry Bell


From:
Englewood, Florida
Post  Posted 24 Jul 2005 4:54 pm    
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Sure, Bob

I tune
E's to ET with the A and B pedals down -- about 2-4 cents sharp on my Emmons and Bud and 4-6 cents sharp on my Fessy after you release the pedals. Compensates for cabinet drop and shifts the tuning a bit sharp, to avoid the extreme deviations in thirds and sixths w/JI.

G#'s 1Hz / 4 cents flat of ET,
C#'s 2Hz / 8 cents flat,
F's 3Hz / 12 cents flat
A's and B's to ET (or sometimes a little sharp to match the E's better).

F#'s to ET if I'm using compensators, then tune the compensated note about 2Hz / 8 cents flat. If not using compensators I split the difference, about 1-1.5Hz / 4-6 cents flat.

Most everything else ends up at 440.

Tuning is a personal thing, like how you dress or comb your hair. It contributes to a player's personality like the brand of guitar or amp or tone preference.

It's kinda like your amp settings. Different players use different settings. It helps determine their musical personality, just like how one tunes.

That's my take on it.

Thanks for the nice comments.

------------------
Larry Bell - email: larry@larrybell.org - gigs - Home Page
2003 Fessenden S/D-12 8x8, 1969 Emmons S-12 6x6, 197? Sho-Bud S-12 7x6, 1971 Dobro, Standel and Peavey Amps

[This message was edited by Larry Bell on 24 July 2005 at 06:03 PM.]

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Jim Peters


From:
St. Louis, Missouri, USA, R.I.P.
Post  Posted 24 Jul 2005 5:57 pm    
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Maybe it's my 40plus years of playing straight up 440 6 string, but the JI clips sound incredibly sour to my ear, the tampered tunig somewhat sour, and the 440 clips right on.
What does everyone else think?

Nice playng on the bounces Larry, very relaxed!! JimP

[This message was edited by Jim Peters on 24 July 2005 at 06:57 PM.]

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Bobby Lee


From:
Cloverdale, California, USA
Post  Posted 24 Jul 2005 6:15 pm    
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I always tune my pedaled C# to the G#, and then tune the A from that. If you tune the C# to the A note, it might not be in tune with the G# and your A+F position will be out of tune. And that's exactly what I hear in the JI sample - the A+F position is not in tune because the C# isn't in tune with the G#.
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Eric West


From:
Portland, Oregon, USA, R.I.P.
Post  Posted 24 Jul 2005 6:29 pm    
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Larry. I liked ALL of them, possibly the ET a slight bit better, but I can't be sure. Might just be my mental frame going into it. I know on the auto adjusted keyboard that b0b introduced us to ,I without fail, chose ET.

It's your playing that makes it either way.

I don't remember if it was you that posted Ashoken Farewell a while ago, but I fouund it to be totally great. If you can find it, or if I can, it should be posted. Your tone center is beyond match that I've heard.

I'm plugging the Podxt in all the time this weeek, and will just keep it running while I practice. I have tons of HDD.

I WILL post what I come up with with no reverb.

( just kidding about the 'no reverb')

Great.



EJL
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Larry Bell


From:
Englewood, Florida
Post  Posted 24 Jul 2005 6:50 pm    
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How about this, b0b
here's the JI example -- just the last 4 bars in G with the A+B pedals at the 10th fret

with piano http://www.larrybell.org/mp3/ji_w_pno.mp3

and without http://www.larrybell.org/mp3/ji_no_pno.mp3

the third may be a teeny bit flat, but it's the piano that creates the dissonance. Exactly why I stopped tuning JI.

------------------
Larry Bell - email: larry@larrybell.org - gigs - Home Page
2003 Fessenden S/D-12 8x8, 1969 Emmons S-12 6x6, 197? Sho-Bud S-12 7x6, 1971 Dobro, Standel and Peavey Amps

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Larry Bell


From:
Englewood, Florida
Post  Posted 24 Jul 2005 6:56 pm    
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. . . and, Eric
I probably have the version of Ashokan Farewell you mention, but the one on my website is off my new CD. I went for an authentic feel, rather than the steel playing the whole tune. Some will prefer it one way, others the other, I s'pose.

Give it a listen. It's on my tunes page. Let me know what you think. I'll try to dig the other version up if you'd like.

------------------
Larry Bell - email: larry@larrybell.org - gigs - Home Page
2003 Fessenden S/D-12 8x8, 1969 Emmons S-12 6x6, 197? Sho-Bud S-12 7x6, 1971 Dobro, Standel and Peavey Amps

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Willie Crisel

 

From:
Charlotte, Tennessee, USA
Post  Posted 24 Jul 2005 8:13 pm    
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i still think it all depends on the guitar and the amount of cabinet drop.that's why you can tune a legrand III with counter force to 440,the more drop the more tempered the tunning,,i like your tuning the best,great tone and playing also,

------------------
1990 ,Emmons Legrand II 8 and 4,1994 Legrand II 3 and 5 Peavey LTD Peavey Session 400 Ibanez analog delay

[This message was edited by Willie Crisel on 24 July 2005 at 09:35 PM.]

[This message was edited by Willie Crisel on 24 July 2005 at 09:36 PM.]

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David Doggett


From:
Bawl'mer, MD (formerly of MS, Nawluns, Gnashville, Knocksville, Lost Angeles, Bahsten. and Philly)
Post  Posted 24 Jul 2005 11:04 pm    
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Hmmm... Well, all the ETs sounded okay to me, which is a little surprising, but maybe not when played in unison with a piano like that. That's the toughest test for JI. The JI definitely sounded the worst on the chords at the nut (E, C#, A); and of course the C# was the worst offender. Interestingly, with the G chords played by your ear with the bar, everything sounded better, and I didn't have a strong preference.

On Bud's Bounce, your tampered tuning sounded sweetest to me. But neither of the others sounded very bad. This could simply be a case that you are best doing it the way you are most use to.

Now to quibble a little. Like b0b, I don't hear your JI as being what I am use to (I don't tune pure JI, but I tune closer to JI than your tampered system). I think we need to hear all the chords alone, before hearing them with the piano - just to be sure we are all on the same page as to what JI is. I tune JI either by listening to the chords and individual intervals, or by a chart of pure JI intervals, setting the intervals by watching a meter. I am not familiar with how to tune JI by harmonics. Could you please explain exactly how that is done and why it should work?

To best deal with cabinet drop at the nut, one can split the difference between the pedal up (E chord) and pedal down (A chord) positions. So for example, if your E strings drop 8 cents when the A and B pedals are pressed, you would tune the Es 4 cents flat of 440 with the pedals pressed, and they should return 4 cents sharp when the pedals are released. Then either position is within 4 cents of 440 (this works with JI and ET). I don't see the point of tuning one position to the meter and letting the other one go where it may. We have to play in both positions. Also, because the steel is playing in higher octaves than A-above-middle-C (the 440 standard), you need to "stretch" everything about 8 cents sharp of 440. I believe these changes will get rid of some of the flatness with JI at the nut; but this might introduce more sharpness to ET, and possily also your tampered tuning.

By the meter (ignoring stretch), the tonic and 5th of the E chord should be one-half the cabinet drop sharp of 440, and the 3rds should be 14 cents flat of the tonic and 5th; or from 440 should be 14 cents flat minus half the cabinet drop (e.g., 10 cents flat, if the cabinet drop of the Es is 8 cents). For the A chord, the tonic and 5th should be half the cabinet drop flat of 440, and the 3rds should be 14 cents flat of the tonic and 3rd (or 14 cents flat of 440 plus half the cabinet drop; total of 18 cents flat of 440 if the cabinet drop is 8 cents).

b0b, I don't understand why you would tune the C# (A pedal stop) to G# (open string 6). The C#, as the 3rd of the A chord, should be tuned 14 cents flat of the open E strings (the 5ths of the A chord), with the pedals down. The A roots of that chord are the B pedal stops, which should be tuned to the same thing as the E strings, with the pedals down.

Finally, The C# roots of the A/F postion are the A pedal stops. As the 3rds of the A chord, the C# will be 14 cents flat of 440 plus half the cabinet drop (total of 18 cents below 440 in the above example). The G# on the open string 5 will also be 14 cents flat plus half the cabinet drop, because that was the 3rd of the E chord. So the tonic and 5ths of the C# chord should match, even though one is pedaled and one is open. The F pedal stop is the 3rd of the chord, and so should be 14 cents flat of the C# and G#. That whole chord will be hopelessly flat at the nut, but the intervals should be the same as in the E and A chords.

Maybe this is how you tuned things, but one would have to hear the chords without the piano to know for sure. In the E and A chords, the tonics and 5ths should be identical for JI and ET. Only the 3rds should sound different. If that is not the case, then something is not exactly right.

No matter what, Larry has certainly done a big service. Doing all that retuning is tedious and time consuming.

[This message was edited by David Doggett on 25 July 2005 at 12:14 AM.]

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Charlie McDonald


From:
out of the blue
Post  Posted 25 Jul 2005 3:48 am    
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Larry, on the first track, are you sure your piano is in tune?
Just kidding, we all know all pianos are out of tune.

I'd find it hard to tell a dime's worth of difference between the ET and the tampered tuning, but I'd say in both sections/examples, I find your tampered tuning a little 'sweeter', as somehow the character of both/all the instruments is more differentiated. Ashokan Farewell is a good case in point, and to me, ensemble playing is the point in this thread.

But even as a solo instrument, I find the JI 'just' out of tune.
This is a very interesting experiment. Thanks.
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Hans Holzherr


From:
Münchenbuchsee, Switzerland
Post  Posted 25 Jul 2005 5:30 am    
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That's some fine playing, but in terms of tuning, I go along with b0b. I think the main reason why the mini poll shows a preference for ET/tampered ET is simply that in what was meant to be JT, pedals - or strings - are noticably out of tune. I don't know the reason for that, but it's a fact, period. (Edited: now re-recorded and corrected)

Like b0b, I tune my A pedal to the open 3rd string (I want that perfect minor or 6th chord, right?). But that C# will also form a perfect major third with the A on the 6th string, B pedal down, which was tuned to the open E string.

I thought I'd post the cent/hertz chart for JT intervals which I made two years ago and cleaned up today at http://homepage.hispeed.ch/updowncat/cents_hertz_chart.xls You'll find all the numbers there DISREGARDING cabinet drop compensation (which you'll have to add if needed). This is not a PS tuning chart, but an interval chart. Still, the numbers are all there. There's a chart for single intervals, and for two intervals added.

One remark regarding the tritone in the middle. The JT tritone can have several ratios, but only the ET tritone maintains the symmetry of the chart. Actually, I do tune my Bb lever straight.

Hans

[This message was edited by Hans Holzherr on 25 July 2005 at 06:36 AM.]

[This message was edited by Hans Holzherr on 26 July 2005 at 04:40 AM.]

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Larry Bell


From:
Englewood, Florida
Post  Posted 25 Jul 2005 5:59 am    
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Dave, Hans
Did you listen to the two new clips in my last post b4 this one? Do they sound out of tune without the piano? They don't to me, by themselves and then sound very sour with the ET keyboard.

with piano http://www.larrybell.org/mp3/ji_w_pno.mp3

and without http://www.larrybell.org/mp3/ji_no_pno.mp3


Here's what I'll do. I'll be happy to re-record the JI examples using whatever version of JI you recommend. It's been so long since I've tuned harmonically I may have forgotten how. So, Hans, which of the temperaments from your XL sheet do you want me to use? Tell me how to tune and I'll redo the JI stuff. I really believe that a lot of it is the temperament on the piano. Without the pno it sounds pretty good to me.

That said, I've used semi-meantone or tampered or whatever you care to call it for so long, BOTH ET AND JI THIRDS SOUND OUT OF TUNE TO ME.

Also, Dave, I would not go along with calling a tuning JI if the tonic is not at A=440.

------------------
Larry Bell - email: larry@larrybell.org - gigs - Home Page
2003 Fessenden S/D-12 8x8, 1969 Emmons S-12 6x6, 197? Sho-Bud S-12 7x6, 1971 Dobro, Standel and Peavey Amps

[This message was edited by Larry Bell on 25 July 2005 at 07:15 AM.]

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David Doggett


From:
Bawl'mer, MD (formerly of MS, Nawluns, Gnashville, Knocksville, Lost Angeles, Bahsten. and Philly)
Post  Posted 25 Jul 2005 7:05 am    
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Larry, yes I listened to the one example of steel alone, and thought the JI sounded a little off. The main point of this is that we should not be trusting this to our ears. In this experiment everything should be exactly according to the meter, whether JI or ET, so there can be no argument. In Hans chart the difference between JI and ET in cents is in the horizontal yellow line labelled "JT - ET [cents, rounded]." If you want to read the meter in Hz (which I find easier to work with), you use the green horizontal line labelled "JT reference A (rounded)."

Quote:
Also, Dave, I would not go along with calling a tuning JI if the tonic is not at A=440.


That works for the A and E chords. The tonics of those chords would both be 440, except for cabinet drop. But it can't work for the C# chord, unless you detune the A and E chords and tune the whole guitar just for that C# chord for this experiment, which would seem to have no practical value. Because the A pedal C# has been tuned flat of 440 as the 3rd of the A chord, there is no way it can be 440 as the tonic of the C# chord. If the A pedal is tuned to JI 437 for the A chord, it will be 437 as the tonic of the C# chord with the A pedal and F lever. Both the tonic (C# on the A pedal) and the 5th (G# on open strings 3 and 5) will be 437, as the 3rds of the A chord and E chord, respectively. The F lever stop is the 3rd of the C# chord and should be tuned 14 cents (3 Hz) below the C# and G#, or 28 cents (6 Hz) below 440. Thus, the intervals will be proper JI, but the tonic will be 437, not 440. I don't see how it could be done any other way, even with compensators. You could put a compensator on the F lever for the 6th string G#, but what would you do about the A pedal stop, which forms the tonic of the chord? Therefore, the point of tuning JI is to get the intervals right, not necessarily to have the tonic directly over the fret, which of course plays havoc with the C# chord at the nut.

When you start adjusting for cabinet drop, you will move some tonics away from 440, whether you tune JI or ET. Tuning JI by the intervals, and ignoring where the tonic is, can get the intervals right on these 3 chords regardless of cabinet drop. Tuning by ET without adjusting for cabinet drop will have some of the intervals in the A and C# chords off (from ET intervals) by the amount of cabinet drop. If you adjust for cabinet drop, you can get the proper ET intervals with all three chords, but some or all of the tonics will not be 440 (depending on whether you tune to 440 with the pedals up or down, or whether you split the difference as I described). You have to choose whether you want proper intervals, or proper tonics, you can't have both (unless there is no cabinet drop).

[This message was edited by David Doggett on 25 July 2005 at 08:23 AM.]

[This message was edited by David Doggett on 25 July 2005 at 08:47 AM.]

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David Doggett


From:
Bawl'mer, MD (formerly of MS, Nawluns, Gnashville, Knocksville, Lost Angeles, Bahsten. and Philly)
Post  Posted 25 Jul 2005 7:43 am    
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b0b and Hans, I was wrong questioning how you tune the A pedal C# stop. It's a red herring. It doesn't matter whether you tune the A pedal C# to the E string (as the 3rd and 5th of the A chord, respectively) or to the open G# string (as the root and 5th of the C# chord, respectively). In both cases, the C# will be tuned 14 cents flat of the E chord root, which would be 440, if not for cabinet drop. If you assume the open E string is the 5th of the A chord and tune the A pedal C# so it is the 3rd of that chord, the C# will be 14 cents below the E. A proper 5th is 1.5 cents sharp of the root, but that is such a small difference that for practical purposes I tune my 5ths the same as my roots. So if my A chord 5th (E string) is 440, my C# will be 437. But, my G# string, as the 3rd of the open E chord, is also tuned 437. So if I tune C# on the A pedal as the root to the fifth on the G# string, it will be 437 that way also. If you actually try to tune your 5ths a couple cents sharp of the roots, there would be a slight difference in the two methods. But I don't think we could hear it.
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Bobby Lee


From:
Cloverdale, California, USA
Post  Posted 25 Jul 2005 7:45 am    
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The A+B position isn't the one that sounded bad to me, Larry. It's the A+F. It sounds like the C# isn't in tune with the G#.

That's not a real piano, is it? I played in a trio with upright piano and bass for four years. I was tuning pure JI at the time. The only thing that sounded out of tune was the occassional open string.


------------------
Bobby Lee (a.k.a. b0b) - email: quasar@b0b.com - gigs - CDs, Open Hearts
Williams D-12 E9, C6add9, Sierra Olympic S-12 (F Diatonic)
Sierra Laptop S-8 (E6add9), Fender Stringmaster D-8 (E13, C6 or A6)
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Bobby Lee


From:
Cloverdale, California, USA
Post  Posted 25 Jul 2005 7:54 am    
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David wrote:
Quote:
The main point of this is that we should not be trusting this to our ears.
I couldn't disagree more. In the end, the only thing we can really trust is our ears. The bar gives us infinite control of pitch. If we can't trust our ears, we will never be able to play in tune!

JI is an "ear" tuning. The harmonics of the strings are the basis for the intervals. The method recommended and used by most experienced players is to get the guitar nicely in tune by ear in a quiet room, then measure it with a tuner and write it down. This allows us to duplicate the tuning with a tuner on a noisy stage.

Some of the top pros don't even bother with a tuner - they always tune by ear.

------------------
Bobby Lee (a.k.a. b0b) - email: quasar@b0b.com - gigs - CDs, Open Hearts
Williams D-12 E9, C6add9, Sierra Olympic S-12 (F Diatonic)
Sierra Laptop S-8 (E6add9), Fender Stringmaster D-8 (E13, C6 or A6)
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Hans Holzherr


From:
Münchenbuchsee, Switzerland
Post  Posted 25 Jul 2005 8:38 am    
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Quote:
Did you listen to the two new clips in my last post b4 this one? Do they sound out of tune without the piano? They don't to me, by themselves and then sound very sour with the ET keyboard.

Sorry, I hadn't listened to these, Larry. I perceive them the same way you do. I must say that I have never played with a piano in the band. If I did I would take it from there and maybe change the way I tune. But then the issue is exactly the same for the vocals (JT chords) and the violin (ditto)...

Dave, the fifth is really much closer to +2 cents than +1.5. So, why not go all the way and do it according to the numbers? You get truer intervals that way. BTW, I currently don't compensate for cabinet drop. On the upside, the open C# chord is so much detuned that I can fret it just right of the nut. This works best with gauged rollers.

Hans
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Larry Bell


From:
Englewood, Florida
Post  Posted 25 Jul 2005 8:43 am    
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Quote:
That works for the A and E chords.

That's all I meant. If the E is not relative to A440 it isn't JI in my book.

If I'm reading the chart correctly, with E as the tonic, there are two choices for a couple of the notes. I don't want to waste time tuning to an inappropriate version of JI (again )

I propose the following (if I'm reading the chart correctly):
E 0
F -18
F# 4
G 16
G# -14
A -2
A# 0
B 2
C 14
C# -16
D 18
D# -12
E 0

Does that work? I'll tune to whatever you guys suggest, rather than harmonics.

------------------
Larry Bell - email: larry@larrybell.org - gigs - Home Page
2003 Fessenden S/D-12 8x8, 1969 Emmons S-12 6x6, 197? Sho-Bud S-12 7x6, 1971 Dobro, Standel and Peavey Amps

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Bob Hoffnar


From:
Austin, Tx
Post  Posted 25 Jul 2005 8:45 am    
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Edited:
Now I see what you guys are doing ! Keep up the good work. Sorry about my first statement.

Bob

[This message was edited by Bob Hoffnar on 25 July 2005 at 09:51 PM.]

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Larry Bell


From:
Englewood, Florida
Post  Posted 25 Jul 2005 8:58 am    
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Why do you reckon that is, Bob?

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Larry Bell - email: larry@larrybell.org - gigs - Home Page
2003 Fessenden S/D-12 8x8, 1969 Emmons S-12 6x6, 197? Sho-Bud S-12 7x6, 1971 Dobro, Standel and Peavey Amps

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Hans Holzherr


From:
Münchenbuchsee, Switzerland
Post  Posted 25 Jul 2005 11:34 am    
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Quote:
I propose the following (if I'm reading the chart correctly)

Well... not quite. Just pick out the chord notes.
1) open position E chord(s):

E 0 440 (...+ cab. drop compens.)
G# -14 436.5
B +2 440.5
D -4 439
C# -16 436
2) open position B chord(s)
(white-blue striped charts, fifth PLUS
chord intervals):
B +2 440.5 (already tuned)
D# -12 437
F# +4 441
G# -14 436.5 (already tuned)
3) pedals AB A chord(s)
(white-blue striped charts, fourth PLUS
chord intervals):
A -2 439.5 (fourth of E)
C# -16 436 (already tuned)
E 0 440 (already tuned)
F# -18 435.5 -> compensator!
4) pedals AF C# chord
(white-blue striped charts, sixth PLUS
chord intervals):
C# -16 436 (already tuned)
F -29 432.5
G# -14 436.5 (already tuned)
5) tune 4th string D# to D# 2nd string
6) tune 2nd string D to 9th string D
(octave) (?.... I do, but I have a comp.
on the F# -> -18, again)
7) tune Bb to 440


Problem: Major chord with D as tonic needs a compensator for its major third F# (-> -1Cool. But then the B (sixth of D) is out of tune.... bar slant....?

BTW, tuning with harmonics is more accurate than tuning with a tuner.

And BTW, major whole and minor whole are both variations of a whole tone.

Hans

[This message was edited by Hans Holzherr on 25 July 2005 at 12:37 PM.]

[This message was edited by Hans Holzherr on 25 July 2005 at 12:41 PM.]

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David Doggett


From:
Bawl'mer, MD (formerly of MS, Nawluns, Gnashville, Knocksville, Lost Angeles, Bahsten. and Philly)
Post  Posted 25 Jul 2005 12:06 pm    
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b0b, we completely agree that normally tuning and playing should be done with our ears. My comment that we should go strictly by the meter and not trust our ears was meant only for this experiment Larry is doing. I mean, rather than trust his harmnics and ears to find JI, let's do it strictly by the book, according to theoretical JI, and check it with a meter. Hans has provided the book. Larry's last post with the list of notes and cents difference incorporates that.

Now I'm going to take that and adjust it for cabinet drop and stretch tuning. I am going to put Hz in these tables rather than cents difference. The reason is that in working with intervals it is sometimes confusing as to whether one means cents difference from A=440, or cents difference from reference pitch of the root of the chord. Because of cabinet drop and the F pedal problem, they will not always be the same. When you see the Hz number, you know it is in reference to absolute A=440, and not relative to the chord root. Also, many meters are just easier to read in Hz. My Boss TU12 only has a mark every 5 cents.

Larry said his Fessy has 4 to 6 cents drop on the Es when the A and B pedals are pressed. I am going to round that up to 8 cents or 2 Hz, and split it between the up pedal and down pedal postion. Stretch tuning would put the reference pitch for the E on string 4 at about 8 cents (2 Hz) above 440. Since I already rounded up the cabinet drop, I'm going to round the stretch down to 4 cents or 1 Hz. Together with the cabinet drop this puts the Es at 442. This, not entirely coincidentally, is what Paul Franklin tunes to. So let's go with it and see what happens.

E9 JI by the book (assuming no cabinet drop or stretch):

			F	A	B

1 F# 440
2 D# 437
3 G# 437 440
4 E 440 434
5 B 440 437
6 G# 437 440
7 F# 440
8 E 440 434
9 D 444
10 B 440 437


JI adjusted for 2 Hz (8 cents) cabinet drop on the Es, with A and B pedals pressed:
			F	A				F	A	B

1 F# 441
2 D# 438
3 G# 438 439
4 E 441 433
5 B 441 436
6 G# 438 439
7 F# 441
8 E 441 433
9 D 445
10 B 441 436


JI adjusted for cabinet drop, and stretched 1 Hz (4 cents):
			F	A	B

1 F# 442
2 D# 439
3 G# 439 440
4 E 442 434
5 B 442 437
6 G# 439 440
7 F# 442
8 E 442 434
9 D 446
10 B 442 437


Now let's give the same treatment to ET. Actually I'm not sure how to do this. I have never heard an ET tuner discuss how they handle cabinet drop. The first chart below will be ET by the book, ignoring cabinet drop. Every string and every stop is simply tuned to A=440. In the second chart below, 2 Hz (8 cents) cabinet drop is assumed on the Es. Tuning all the open string 1 Hz sharp, and all the pedal and knee stops 1 Hz flat splits the difference. This means the intervals are equal with the pedals up or down. But in neither case is the reference exactly 440. But in both cases it is within 1 Hz (4 cents) of 440, and so below the bench mark of 5 cents that is considered negligible. In the final table I added 1 Hz (4 cents) stretch, which is considered a standard way of doing ET.

ET by the book (assuming no cabinet drop or stretch):
			F	A	B

1 F# 440
2 D# 440
3 G# 440 440
4 E 440 440
5 B 440 440
6 G# 440 440
7 F# 440
8 E 440 440
9 D 440
10 B 440 440


ET adjusted for 2 Hz (8 cents) cabinet drop on the Es:
			F	A	B

1 F# 441
2 D# 441
3 G# 441 439
4 E 441 439
5 B 441 439
6 G# 441 439
7 F# 441
8 E 441 439
9 D 441
10 B 441 439


ET adjusted for cabinet drop and stretched 1 Hz (4 cents):
			F	A	B

1 F# 442
2 D# 442
3 G# 442 440
4 E 442 440
5 B 442 440
6 G# 442 440
7 F# 442
8 E 442 440
9 D 442
10 B 442 440

[This message was edited by David Doggett on 25 July 2005 at 04:40 PM.]

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