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What's the use of Roerquint 6 (utrecht) ?

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sesquialtera

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What's the use of Roerquint 6 (utrecht) ?

PostTue Apr 23, 2013 1:48 pm

Hello friends

Can you help me to find some use of the stop "Roerquint 6" (pedal) ?
I've got one in the Utrecht sample set, but I'd like to know, generally,
in what kind of music, in what kind of registration this stop is needed.

Can you please give me example(s) ?
I ask this because I don't know how to use it ...
Thank you.
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jocr

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Re: What's the use of Roerquint 6 (utrecht) ?

PostTue Apr 23, 2013 2:42 pm

Rohrquint[e] German
Roerquint Dutch
Rohrflötenquinte German
Rohrflötquint German
Ausdley and Irwin define the German names as denoting a Rohrflöte at 5-1/3' pitch, though Osiris contains as many examples at 2-2/3' as at 5-1/3', as well as nearly as many examples at 10-2/3'. The name Rohrquinte has also been used as a synonym for Rohrnasat. This is a very old stop; the earliest known example dates from 1646.

It could be this stop, rounding 5 1/3' up to 6' . Note the stop it's made from also has a prominent twelfth.
Definition courtesy of http://www.organstops.org/MainFrameN.html

James Pressler
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Re: What's the use of Roerquint 6 (utrecht) ?

PostTue Apr 23, 2013 3:57 pm

Hi,

http://en.wikipedia.org/wiki/Organ_stop
"In some organs, lower pitches are used to create difference tones e.g., Quintbass 10⅔'. Such 'helper ranks" that sound at the fifth just above or fourth below the fundamental (e.g., Bourdon 16'),[citation needed] can create the impression of a stop an octave lower than the fundamental (i.e., Bourdon 32'), saving the space and money otherwise needed for larger bass pipes."

When using the roerquint 6 (=roerquint 5 1/3) using together with a 8' then create the impression of a 16' stop.

Greetings,
Paul.
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JoeChip

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Re: What's the use of Roerquint 6 (utrecht) ?

PostTue Apr 23, 2013 3:58 pm

Cf. this old post: http://forum.hauptwerk.com/viewtopic.php?f=12&t=7146&p=51284#p51284

This stop can reinforce the 16' tone of the Subbass 16' (5 1/3' is the second harmonic of the 16').
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profeluisegarcia

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Re: What's the use of Roerquint 6 (utrecht) ?

PostTue Apr 23, 2013 5:57 pm

pahasoft wrote:Hi,

http://en.wikipedia.org/wiki/Organ_stop
"In some organs, lower pitches are used to create difference tones e.g., Quintbass 10⅔'. Such 'helper ranks" that sound at the fifth just above or fourth below the fundamental (e.g., Bourdon 16'),[citation needed] can create the impression of a stop an octave lower than the fundamental (i.e., Bourdon 32'), saving the space and money otherwise needed for larger bass pipes."

When using the roerquint 6 (=roerquint 5 1/3) using together with a 8' then create the impression of a 16' stop.

Greetings,
Paul.

Hello Paul:
Are you talking about "acoustic bass" with HW ? If so, does it work on loudspeakers? As far as I know, this effect is obtained only with two natural pipes sounding simultaneously.
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jocr

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Re: What's the use of Roerquint 6 (utrecht) ?

PostTue Apr 23, 2013 6:06 pm

profeluisegarcia wrote:Hello Paul:
Are you talking about "acoustic bass" with HW ? If so, does it work on loudspeakers? As far as I know, this effect is obtained only with two natural pipes sounding simultaneously.

I'm feeling very old. At one time most church organists in America made do with these:
http://www.dairiki.org/HammondWiki/Drawbars

James Pressler
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profeluisegarcia

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Re: What's the use of Roerquint 6 (utrecht) ?

PostTue Apr 23, 2013 6:40 pm

jocr wrote:I'm feeling very old. [/url]

James Pressler


Not at all¡¡ You still look young and healthy.
I think I understand Lorenzo Hammond´s invention, but in this case the sound -the frequencies- is produced in tone generators and go out directly through speakers.
But... if I play in a HW sampled organ a given tone -let´s say C- and its upper quint -G- simultaneously, do we may hear some resultant CC? Perhaps it is me who is feeling hearing loss¡ :(
Kind regards
L.
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jocr

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Re: What's the use of Roerquint 6 (utrecht) ?

PostTue Apr 23, 2013 7:01 pm

profeluisegarcia wrote:But... if I play in a HW sampled organ a given tone -let´s say C- and its upper quint -G- simultaneously, do we may hear some resultant CC?

No because each pipe has its own overtone series. The Hammond tones were pure sine waves, i.e. no overtones at all, and it was only at best an illusion. Cornet mixtures are tuned with the proper overtones. Perhaps this will enlighten us all.
http://en.wikipedia.org/wiki/Overtone
(It's an old picture.)

James Pressler

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