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How to voice Cornet decompose on Georgian Series 55?

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How to voice Cornet decompose on Georgian Series 55?

Postby mnailor » Sun Dec 10, 2017 12:05 pm

I'm playing some English classical voluntaries on the Georgian 55 composite sampleset from Silver Octopus. I got the 55 because of the separate 12th and 17th. I added some reverb, increased the wind effect, and it works well. I especially enjoy the variety of gently voiced Open Diapasons.

The Great 12th and 17th make a good substitute for a Cornet registration. But I miss having a sampled mounted Cornet.

I'm trying to voice the Choir's separate flutes to sound more focused like a mounted Cornet. The obvious thing is to tune the Nasard and Tierce to pure (non-beating) intervals, which means temporarily disabling random detuning and the wind model. That part I can do. And increase the volume.

Are there any other voicing suggestions to help make this work? Even if you don't have this sampleset, voicing flutes at 8', 4', 2 2/3', 2', and 1 3/5' to sound more like a Cornet and not just a Tierce registration might be something others have tried to do.

Thank you.
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Re: How to voice Cornet decompose on Georgian Series 55?

Postby organsRgreat » Mon Dec 11, 2017 7:41 am

I may be missing a point here, but I'd have thought that a Nazard and Tierce would already be tuned to “pure, non-beating intervals”. The only exception would be on an extension organ, such as a theatre organ, where separate ranks were rarely provided for mutations.

Random detuning and the wind model would only introduce a degree of randomness which corresponds to that found in a pipe organ, so leaving those parameters as supplied should produce the most natural sound.

The Wikipedia article is helpful:

https://en.wikipedia.org/wiki/Cornet_(organ_stop)

It states that “The 8' rank is stopped while the other ranks are open”, so that might be worth thinking about – stopped flutes seem much more common than open ones, though maybe that depends on the period in which the organ was built, and the repertoire it was designed to play?
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Re: How to voice Cornet decompose on Georgian Series 55?

Postby mnailor » Mon Dec 11, 2017 10:10 am

The purpose of "temporarily" disabling random and wind detuning was to be able to hear if the ranks are tuned to pure intervals -- otherwise I don't know if beats I hear are from detuning effects or the rank's tuning as shipped. I'll re-enable detuning effects when done, of course. It's just something I plan to verify when I have time.

The 8' is stopped, possibly the 4', and a Nasard is usually stopped. I can't choose other ranks for this -- they are what they are -- but that might help explain why it doesn't hang together very well. Also, I think the upper 3 ranks sound rounder than a real cornet, so maybe increasing their brightness and/or high frequency boost might help.

Thanks for the ideas!
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Re: How to voice Cornet decompose on Georgian Series 55?

Postby mnailor » Mon Dec 11, 2017 3:57 pm

Okay, that was easier than I expected. The Nazard and Tierce were, as you said, already tuned to pure intervals. I just raised the level by 6 dB on the Flute, Nazard, and Tierce, and used the Octave 2' instead of the Piccolo to get a more open sound. Thanks!
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