Problem in GPO 4?

I'm trying to use a Bohlen Pierce tuning in Garritan Personal Orchestra and I'm getting really funky stuff out - my melody jumps an octave-ish at some notes - I have not worked out the pattern yet.

I'm wondering if anyone else has seen this behavior.

Chris

Ok,

Here is what I'm hearing

Compare the direction of the notes in the beginning of this 1 minute solo flute piece:

http://micro.soonlabel.com/flute-compare-tunings/flute-solo-12edo.mp3

Bohlen-Pierce 12 of 13 from Scala archive

http://micro.soonlabel.com/flute-compare-tunings/flute-solo-BP12.mp3

The BP piece inexplicably jumps when it should be playing psuedo-halfsteps.

I have several comparisons here:

http://micro.soonlabel.com/flute-compare-tunings/

The 12th root of Phi is an interesting variant for me.

http://micro.soonlabel.com/flute-compare-tunings/flute-solo-12th-root-of-phi.mp3

And Petr's Golden Spectrum tuning

http://micro.soonlabel.com/flute-compare-tunings/flute-solo-petr-golden-spectrum.mp3

=> Mike S. - do you have a 12 note tuning I can throw at this piece?

I'll have these streaming in a few at www.chrisvaisvil.com

--- In tuning@yahoogroups.com, "christopherv" <chrisvaisvil@...> wrote:
>
> I'm trying to use a Bohlen Pierce tuning in Garritan Personal Orchestra and I'm getting really funky stuff out - my melody jumps an octave-ish at some notes - I have not worked out the pattern yet.
>
> I'm wondering if anyone else has seen this behavior.
>
> Chris
>

Hi Chris,

Ok,
>
> Here is what I'm hearing
>
> Compare the direction of the notes in the beginning of this 1 minute solo
> flute piece:
>
> http://micro.soonlabel.com/flute-compare-tunings/flute-solo-12edo.mp3
>
> Bohlen-Pierce 12 of 13 from Scala archive
>
> http://micro.soonlabel.com/flute-compare-tunings/flute-solo-BP12.mp3
>
> The BP piece inexplicably jumps when it should be playing psuedo-halfsteps.
>

It's a different sample in both mp3's?
In any case, there's a lot more difference than just the tuning so I think
you made an error somewhere in rendering one of the files?
12edo flute sound I like better btw.

Marcel

In theory I should not have to worry about samples - Garritan Personal
Orchestra should be taking care of it for me.
BUT... I agree it sounds significantly different.

Chris

On Tue, Mar 23, 2010 at 1:15 PM, Marcel de Velde <m.develde@...>wrote:

>
>
> Hi Chris,
>
>
> Ok,
>>
>> Here is what I'm hearing
>>
>> Compare the direction of the notes in the beginning of this 1 minute solo
>> flute piece:
>>
>> http://micro.soonlabel.com/flute-compare-tunings/flute-solo-12edo.mp3
>>
>> Bohlen-Pierce 12 of 13 from Scala archive
>>
>> http://micro.soonlabel.com/flute-compare-tunings/flute-solo-BP12.mp3
>>
>> The BP piece inexplicably jumps when it should be playing
>> psuedo-halfsteps.
>>
>
> It's a different sample in both mp3's?
> In any case, there's a lot more difference than just the tuning so I think
> you made an error somewhere in rendering one of the files?
> 12edo flute sound I like better btw.
>
> Marcel
>
>

christopherv wrote:
> I'm trying to use a Bohlen Pierce tuning in Garritan Personal
> Orchestra and I'm getting really funky stuff out - my melody jumps an
> octave-ish at some notes - I have not worked out the pattern yet.
> > I'm wondering if anyone else has seen this behavior.
> > Chris

Assuming the last note in the scale is 3/1, try replacing it with the equivalent in cents (1901.955). I seem to recall having similar problems with one of the scales I tried using.

ok, thanks Herman I'll try that. I was hoping for some thing like that!

Chris

On Tue, Mar 23, 2010 at 9:27 PM, Herman Miller <hmiller@...> wrote:

>
>
> christopherv wrote:
> > I'm trying to use a Bohlen Pierce tuning in Garritan Personal
> > Orchestra and I'm getting really funky stuff out - my melody jumps an
> > octave-ish at some notes - I have not worked out the pattern yet.
> >
> > I'm wondering if anyone else has seen this behavior.
> >
> > Chris
>
> Assuming the last note in the scale is 3/1, try replacing it with the
> equivalent in cents (1901.955). I seem to recall having similar problems
> with one of the scales I tried using.
>
>
>

Improved, but didn't cure it entirely

I noticed the rest of the pitch defining numbers were fractions also.
Perhaps GPO has a problem with fractions?

Chris

On Tue, Mar 23, 2010 at 9:27 PM, Herman Miller <hmiller@...> wrote:

>
>
> christopherv wrote:
> > I'm trying to use a Bohlen Pierce tuning in Garritan Personal
> > Orchestra and I'm getting really funky stuff out - my melody jumps an
> > octave-ish at some notes - I have not worked out the pattern yet.
> >
> > I'm wondering if anyone else has seen this behavior.
> >
> > Chris
>
> Assuming the last note in the scale is 3/1, try replacing it with the
> equivalent in cents (1901.955). I seem to recall having similar problems
> with one of the scales I tried using.
>
>
>

--- In tuning@yahoogroups.com, Chris Vaisvil <chrisvaisvil@...> wrote:
>
> Improved, but didn't cure it entirely
>
> I noticed the rest of the pitch defining numbers were fractions
> also. Perhaps GPO has a problem with fractions?
>
> Chris
>

Unfortunately many synths only implement the cents part
of .scl. Even Scala doesn't have true rational numbers,
so there's a limit on the size of the fractions you can use.

-Carl

ok, hmmm, I'll give that a try.

This is the first time I've noticed a problem in the actual note placement.
The collapse of the instrument range with > 12 notes / octave is annoying
enough - makes me want to give up on orchestral music sometimes.

On Wed, Mar 24, 2010 at 2:14 PM, Carl Lumma <carl@lumma.org> wrote:

>
>
> --- In tuning@yahoogroups.com <tuning%40yahoogroups.com>, Chris Vaisvil
> <chrisvaisvil@...> wrote:
> >
> > Improved, but didn't cure it entirely
> >
> > I noticed the rest of the pitch defining numbers were fractions
> > also. Perhaps GPO has a problem with fractions?
> >
> > Chris
> >
>
> Unfortunately many synths only implement the cents part
> of .scl. Even Scala doesn't have true rational numbers,
> so there's a limit on the size of the fractions you can use.
>
> -Carl
>
>
>