Tuning CD

Hello bigAndrewM -

I've had ideas similar to yours on an encyclopedia of chord pairs with A: different chord types - 4-5-6 triads, 5-6-7 7th chords, 5-7-9 ninth chords, 7-9-11 eleventh chords, etc. leaving out technicalities B: interval between the chord roots using 12 "end points" going around a quasi-circle of fifths - I used just intervals - eg. for C to G root frequency ratio 2:3, for C to D root frequency ratio 8:9, C to A root frequency ratio 3:5, etc. Under heading A, there are pairs 4-5-6 on one root and 4-5-6 on another root, 4-5-6 on that root but 5-6-7 on the other root, giving two "degrees of freedom" based on which combination of chord type is used, while the interval between roots, of which there are 11, brings in a third degree of freedom.

The effect of order is critical - e.g. F-7 to C major is completely different than C-7 to F major.

There are complexities I've glossed over for brevity's sake.

I've made several hours' worth of recordings of chord pairs - quite long to listen to all in a string.

I have a portion of these recordings on disk as .aiff files which I've been hoping to place as Dropbox-accessible sound files where I could hope to get feedback. It is my hope to offer sets of didactic recordings for sale once I've gotten this material into a user-friendly package - which I see as a considerable task. Other tasks stand in the way of my doing much work on this at present.

Right now, I am hoping to send a link to one or two sound files to the tuning list for which I hope to receive feedback within a day or a few days. The recordings are either of piano or voice synthesis (for which I developed an algorithm based on studies on additive analysis of voice and other instrument sounds which I did at Florida State University in the 1980s).

Best wishes for your project. Dave Hill

PS I've tested transitions between pairs of chords with root interval 8:9 vs pairs of chords with root interval 9:10. The difference I found was discernible, but at least at first in my recollection, disappointingly small. It may be, however, that differences such as these will be found to be more important music-perceptually than appeared to me at first. Dave

Is this in response to a query for suggestions regarding making a CD that I posted a couple of days ago and then removed? I ended up answering my own question.

Andrew

--- In tuning@yahoogroups.com, Ralph Hill <ASCEND11@...> wrote:
>
> Hello bigAndrewM -
>
> I've had ideas similar to yours on an encyclopedia of chord pairs
> with A: different chord types - 4-5-6 triads, 5-6-7 7th chords, 5-7-9
> ninth chords, 7-9-11 eleventh chords, etc. leaving out technicalities
> B: interval between the chord roots using 12 "end points" going around
> a quasi-circle of fifths - I used just intervals - eg. for C to G root
> frequency ratio 2:3, for C to D root frequency ratio 8:9, C to A root
> frequency ratio 3:5, etc. Under heading A, there are pairs 4-5-6 on
> one root and 4-5-6 on another root, 4-5-6 on that root but 5-6-7 on
> the other root, giving two "degrees of freedom" based on which
> combination of chord type is used, while the interval between roots,
> of which there are 11, brings in a third degree of freedom.
>
> The effect of order is critical - e.g. F-7 to C major is completely
> different than C-7 to F major.
>
> There are complexities I've glossed over for brevity's sake.
>
> I've made several hours' worth of recordings of chord pairs - quite
> long to listen to all in a string.
>
> I have a portion of these recordings on disk as .aiff files which
> I've been hoping to place as Dropbox-accessible sound files where I
> could hope to get feedback. It is my hope to offer sets of didactic
> recordings for sale once I've gotten this material into a user-
> friendly package - which I see as a considerable task. Other tasks
> stand in the way of my doing much work on this at present.
>
> Right now, I am hoping to send a link to one or two sound files to
> the tuning list for which I hope to receive feedback within a day or a
> few days. The recordings are either of piano or voice synthesis (for
> which I developed an algorithm based on studies on additive analysis
> of voice and other instrument sounds which I did at Florida State
> University in the 1980s).
>
> Best wishes for your project. Dave Hill
>
> PS I've tested transitions between pairs of chords with root interval
> 8:9 vs pairs of chords with root interval 9:10. The difference I
> found was discernible, but at least at first in my recollection,
> disappointingly small. It may be, however, that differences such as
> these will be found to be more important music-perceptually than
> appeared to me at first. Dave
>