Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

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kertsopoulos
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Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Thu Jun 02, 2016 9:38 am

[Note: This thread was originally part of another topic here, now split into its own topic]

Since the subject is - mainly - pedal guitars (whether rectangular or traditional), you might be interested in this design and construction of mine of a "Classical pedal guitar", posted below. Smaro Gregoriadou performs a rewarding interpretation on it of Fernande Peyrot's (1888-1978) "Preludes pour guitare" as Smaro has also recorded this work with this specific guitar on her CD ""El Aleph" (DE 3490) by DELOS. What is common between this traditional guitar and the rectangular guitar already being the subject of this post? Both guitars are "Pedal guitars" giving the possibility to the interpreter to produce at will - and whenever needed and desired - "pedal effects" in the interpretation of the work.

Youtube
Kertsopoulos classical pedal guitar.jpg
Kertsopoulos classical pedal guitar-detail 1.JPG
Kertsopoulos classical pedal guitar-detail 2.JPG
Kertsopoulos classical pedal guitar-detail 3.JPG
Kertsopoulos classical pedal guitar-detail 4.JPG
Kertsopoulos classical pedal guitar-detail 5.JPG
Kertsopoulos right hand pedal of classical pedal guitar-detail 6.JPG

Youtube
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Last edited by kertsopoulos on Fri Jun 10, 2016 5:58 pm, edited 1 time in total.

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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Thu Jun 02, 2016 9:24 pm

The subject being "pedal guitars", another design of a traditional design pedal guitar that might be of interest. Smaro Gregoriadou interprets her arrangement of Chaconne No. 2 in G major, HWV 435 by George Frideric Handel (1685-1759) on a "Kertsopoulos high-tuned guitar with scalloped fingerboard and movable back pedal". Guitar/strings design and construction: Yorgos Kertsopoulos (KERTSOPOULOS AESTHETICS).Smaro is a recording artist of DELOS and this Chaconne is included in her cd "Reinventing guitar" volume II.

Youtube


Youtube

The "Kertsopoulos high-tuned guitar with scalloped fingerboard and movable back pedal" shown from different views and close-ups to observe constructional specifications, of the 30 mm high saddle of an arched design, the right hand pedal, and the scalloped fingerboard, along with the acoustic wooden layout strips coating the Brazilian rosewood back and sides for fine intonation of all frequencies.

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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Fri Jun 03, 2016 8:56 am

The "Kertsopoulos high-tuned guitar with scalloped frets and movable back pedal" on interpretation of J.S.Bach.Smaro Gregoriadou interprets her arrangement of Toccata BWV 914 for keyboard instrument in E minor, BWV 914 by Johann Sebastian Bach (1685-1750). Smaro is a recording artist of DELOS and this Toccata is included in her cd "Reinventing guitar" volume II. Newly developed strings tuned 5 semitones higher than ordinary. Guitar/strings: Design & construction: Yorgos Kertsopoulos (KERTSOPOULOS AESTHETICS).

Youtube
Kertsopoulos high tuned scalloped fingerboard-detail 1.jpg
Kertsopoulos high tuned scalloped fingerboard-detail 2.jpg
Kertsopoulos high tuned scalloped fingerboard-detail 3.jpg
Kertsopoulos high tuned scalloped fingerboard-detail 4.jpg
Kertsopoulos high tuned scalloped fingerboard-detail 5.jpg
Kertsopoulos high tuned scalloped fingerboard-detail 6.jpg
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tyke
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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by tyke » Fri Jun 03, 2016 1:38 pm

It's a guitar, Jim, but not as we know it ...

A great sound and performance - thanks to all concerned. I wonder what it would sound like if there were a couple of extra bass strings ...

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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Sun Jun 05, 2016 12:29 pm

The "Kertsopoulos high-tuned guitar with scalloped frets and movable back pedal" on interpretation of D.Scarlatti. The aim is for the instrument to offer to the interpreter the possibility of producing "harpsichord timber" to the sound since the original work was written by the composer for the harpsichord.
This is the world premiere of the wonderful and demanding Scarlatti Sonata K491/L164, which Smaro Gregoriadou has transcribed and interprets on a high-tuned scalloped pedal guitar of Kertsopoulos design and construction. This Sonata is included in Smaro's CD "Reinventing guitar, Vol. II" released by DELOS.Live in Athens, AN-ART ARTISTRY, 5 November 2012.Smaro Gregoriadou: Reinventing Guitar!

Youtube
The movable back pedal of - the Kertsopoulos high-tuned guitar with scalloped fingerboard and movable back pedal-detail 1.jpg
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The movable back pedal at an angle of - the Kertsopoulos high-tuned guitar with scalloped fingerboard and movable back pedal-detail 2.jpg
The movable back pedal of - the Kertsopoulos high-tuned guitar with scalloped fingerboard and movable back pedal-detail 3.jpg
The movable back pedal of - the Kertsopoulos high-tuned guitar with scalloped fingerboard and movable back pedal-detail 4.jpg
The movable back pedal of - the Kertsopoulos high-tuned guitar with scalloped fingerboard and movable back pedal-detail 5.jpg
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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by pogmoor » Sun Jun 05, 2016 2:53 pm

Thank you, kertsopoulos, for posting these photos and videos. I've enjoyed listening to the different sounds of the guitars - but I should also say that I have especially enjoyed the playing of Smaro Gregoriadou. She is an extraordinarily good player :)
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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Sun Jun 05, 2016 4:24 pm

Many thanks and appreciation to Tyke and Pogmoor for your kind comments.I also agree with you concerning the extraordinary intrepretation of Smaro, she gives life and meaning to my instruments and strings, through her wonderful playing. All best to you! :merci:

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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Mon Jun 06, 2016 4:33 pm

Another design of a "Kertsopoulos classical pedal guitar" where the aim is to have a classical, mature, rich in harmonic content sound throughout the frequency range with absolute balance and pedal effects possibilities. Smaro Gregoriadou interprets Temptation of the Renaissance: Aria, Variations and Dance by Stepan Rak (1945-). Pedal guitar in "Kertsopoulos metallonylon trebles". Guitar/strings: KERTSOPOULOS AESTHETICS http://kertsopoulosaesthetics.blogspot.gr/. Smaro is a recording artist of DELOS http://www.delosmus.com and this work is included in the DELOS latest CD of Smaro "El Aleph" (DE 3490). Video/audio recordings: AN-ART ARTISTRY http://www.an-art.com. Smaro Gregoriadou: Reinventing Guitar! http://www.smarogregoriadou.com

Youtube
DETAIL 1-KERTSOPOULOS PEDAL-FRONT BACK.jpg
DETAIL 2-KERTSOPOULOS PEDAL FRONT.jpg
DETAIL 3-KERTSOPOULOS PEDAL FRONT DETAIL.jpg
DETAIL 4-KERTSOPOULOS PEDAL FRONT AND SIDES.jpg
DETAIL 5-KERTSOPOULOS PEDAL ROSETTE.jpg
DETAIL 6 KERTSOPOULOS PEDAL BACK AND SIDES WITH WOODEN OVERLAYERS.jpg
DETAIL 7-KERTSOPOULOS PEDAL BACK AND SIDES WITH HEEL.jpg
DETAIL 8-KERTSOPOULOS PEDAL DETAILS OF HEAD.jpg
DETAIL 9-KERTSOPOULOS PEDAL CLOSE-UPS OF FRONT AND BACK.jpg
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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Tue Jun 07, 2016 12:17 pm

Since the subject is mainly "Pedal Guitars", here is my "Kertsopoulos pneumatic foot pedal guitar 1988".It is designed and constructed by me as a prototype in 1988. The functions of the levers, the pedals, the air cavities and the pressure gauge are of a dynamic nature, meaning that there is no electricity involved but only pneumatic technology. In this sense the instrument possesses all the materials and concepts of design of the traditional guitar making so it could have been made 300 years ago. It is a modern concept respecting the traditional making

Youtube
Kertsopoulos pneumatic foot pedal guitar 1988-1.JPG
Kertsopoulos pneumatic foot pedal guitar 1988-2.jpg
Kertsopoulos pneumatic foot pedal guitar detail 1.JPG
Kertsopoulos pneumatic foot pedal guitar detail 2.JPG
Kertsopoulos pneumatic foot pedal guitar detail 3.JPG
Kertsopoulos pneumatic foot pedal guitar detail 4.JPG
Kertsopoulos pneumatic foot pedal guitar detail 5.JPG
Kertsopoulos pneumatic foot pedal guitar detail 6.JPG
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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Tue Jun 07, 2016 11:23 pm

It is a pleasure and honor to share with you the speech and the interview of our greatly respected and sheltered in our heart Mrs. Amalia Ramirez, who comments on the "Kertsopoulos Aesthetics" platform work and also on the interpretation of Smaro Gregoriadou. Mrs. Amalia Ramirez's speech at "forms & strings".The Museum of Greek Popular Instruments "Foivos Anogianakis" organized a tribute to the classical guitar "forms & strings", on Saturday 7th of February 2009 at BENAKI MUSEUM. Honorary tribute to Amalia Ramirez and the tradition of her family with honoured guests: Mrs Amalia Ramirez and Mrs. Cristina Ramirez.Guitar recital with different historical instruments as they are revived by "Kertsopoulos Aesthetics" interpreted by the soloists Yorgos Kertsopoulos and Smaro Gregoriadou-Reinventing guitar!.

Youtube


Youtube

Mrs. Amalia Ramirez gives an interview to Dionysia Blazaki after the recital.
Thank you from heart Amalia for your kindness.

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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Fri Jun 10, 2016 6:21 pm

On the following video you can hear but also view in detail the function of the "Kertsopoulos pneumatic foot pedal guitar" also named "air pedal guitar".You can see how the levers are lifted through the pressing of the pedals, by needles, applying pressure to the extra sympathetic strings found under the playable six strings. With this function pedal effects are produced, according to the different pressure applied by the levers and also according to which lever is chosen to be lifted or if both levers are chosen to be lifted.

Youtube

Below is the "Recuerdos de la Alhambra" of Fransisco Tarrega interpreted on the "Kertsopoulos pneumatic pedal guitar" with "Kertsopoulos High-Tuned Strings", where the open strings = the 10th fret of the guitar, meaning one tone lower than the octave tuning as this comes out on the normal guitar at the 12th fret.

Youtube


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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Sat Jun 11, 2016 7:27 pm

Below you can view the "Kertsopoulos triple course Guitarra Battente right hand pedal guitar".The sonata in E minor by Domenico Scarlatti interpreted on high tuned stringing by Y.Kertsopoulos. The tuning is open strings= 9th fret and the strings are designed and constructed by: Y.Kertsopoulos.
In 1948 A.Segovia introduced the nylon string aesthetic of A.Augustine. The classical and flamenco guitar enjoys this aesthetic for more than sixty five years and J.Bream, J.Williams, D.Fampas, the Romero family, C.Parkening, Alirio Diaz, R.Dyens, L.Almeida, Paco de Lucia, P.Pena, C.Montoya, Sabicas, Serranito are only a few of the guitarists that played with great success this aesthetic which has worldwide acceptance today. A.M.Barrios and H.V.Lobos played with metal strings while D.Prat, A.Lauro, F.Tarrega, R.Montoya, Miguel Liobet and others played with gut strings. At the time of M.Giuliani, M.Carcassi, L.Legnani, F.Carulli, F.Sor, D.Aguado and others, the guitar was strung with metal, gut and silk strings and had either double courses or single strings (after the end of the 18th century). Also further back in history G.Sanz, Bermudo, Brescianello, R.De Visee and others played the guitar in higher pitched tunings and also the triple strung "Guitarra Battente" was popular mainly in Italy. Y.Kertsopoulos introduced in 1994 the "Kertsopoulos Aesthetics", which as a multiplex open architecture scheme of "Guitars & Strings" provides the possibility of reviving and realizing the many faces of the guitar's aesthetics, as they have been recorded in history. Among many guitarists that play the aesthetics Smaro Gregoriadou through her "reinventing guitar" term has made many successful first world presentations of different aspects of aesthetic styles in guitar interpretation, employing the "Kertsopoulos Aesthetics" platfom of "Guitars and Strings".

Youtube
KERTSOPOULOS GUITARRA BATTENTE.JPG
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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by wchymeus » Sun Jun 12, 2016 5:40 am

Fascinating! Built in 1996, I wonder how your research evolved with this pedal concept.
Also, I can't really see on the video but is she using a special stand as her position is unconventional probably due to the shape and size of the guitar, and pedal?
Field 2014, Oberg 2013, Vincente Sachis Badia 1977

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Re: Pedal guitars, Mathematical Model of the Guitar, Strings, etc by:Y.Kertsopoulos

Post by kertsopoulos » Sun Jun 12, 2016 10:01 am

wchymeus wrote:Fascinating! Built in 1996, I wonder how your research evolved with this pedal concept.
Also, I can't really see on the video but is she using a special stand as her position is unconventional probably due to the shape and size of the guitar, and pedal?
Hi wchymeus and thank you for your kind comments. Ever since 1996, as you ask me concerning the research of this pedal concept, I have constructed many other shapes and forms of pedal guitars that use the "minimal guitar", but do not use the "rectangular body with the moving back pedal guitar". So, the minimal guitar can be unscrewed from the body of the rectangular body and be screwed and adjusted to another body that will act as an amplifier/resonator of the "minimal guitar's" sound. I will post some of these other pedal guitars, so you can see them and hear their special performance output in sound timber and color.

Concerning the special stand that Smaro uses: as she plays the guitar, beside her right leg is a floor supported stand that the guitar's body (the edge of the rectangular body) rests on it and the side of the guitar rests on the right leg of Smaro. When she plays (and wants to use the pedal effects) she can lightly increase the embracement of the guitar with her right hand on her chest and the movable back moves in and out at different levels and distances producing different kinds of pedal effects. She personally claims that she finds this position most comfortable, for her back posture and all other drawbacks usually connected with the normal guitar position.Thanks again, keep well and shortly I will post the other pedal guitar bodies that use the "minimal guitar".All best, Yorgos.
Last edited by kertsopoulos on Sun Jun 12, 2016 11:35 am, edited 1 time in total.

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