Accordion reed ranks and switches

Register called the accordion the various possible combinations of the built-in reed plate sets, which are also known as choirs.

Treble

Up to five reed plate sets can be present in the treble. The Swiss brands Eichhorn and record presented to a limited extent also produces six -course instruments. The basic forms of reedplates in medium pitch (M, middle octave ). If a choir one octave lower, he is given by L ( lower octave ). Is a chorus an octave higher, this H ( higher octave ) is specified. In analogy to organ stops, the plies are also available with 16 ' ( 16 feet, deep octave), 8' ( middle octave ), and designated 4 ' (high octave).

If several choirs installed in the same location as M and MM, these are mutually detuned slightly, so that a floating effect, also called tremolo results. Some of the musicians, especially in the folk scene, without this effect and tune the plates in the tremolo exactly the same. This one satterer sound is achieved. MMM is a double beat, also called double tremolo. Here, then, three choirs are each slightly detuned in the same position, thus indicating a stronger beat than with only two choirs ( M MM) arises.

To distinguish from M = 8 'MM is alternatively denoted by 8 ° and MMM with 8o. In fünfchörigen instruments normally the choirs L M MM MMM H corresponding to 16 ' 8' 8 ° 8o 4' are available. In some cases there is also the line-up with 16 ' 8 ' 8 ' 4' 22 /3 System. This occupation is also called Quintmixtur because of the 22 /3 ' chorus sounds a fifth above the 4' Choir. Here are the two 8 ' choirs are not deliberately detuned and independently registrable. The 16' - 8'- choir and a choir can, however, be in a cassotto. This design is also available in vierchörigen instruments with the cast 16 ' 8' 8 ' 4'. Such instruments are used, among others, the interpretation of Baroque music.

The technical design of the treble that of a slider chest at the organ. For the operation of the registers, two systems exist. In the structurally simpler system each loop is connected directly to a Registerzug. The organ stops are when the instrument is held in playing position, at the top of the instrument. In this system, a registry change requires a suspension of play on the treble side. This system is found mainly in smaller instruments. The structurally complex system used rockers that are located above the keyboard, thus allowing a fast change the registration on the treble side. In this system, all individual choirs with the exception of the tremolo and double tremolos as well as all meaningful combinations choir via a respective rocker are usually registered by, where by pressing a rocker all the other rockers are reset. This system is functionally equivalent to the fixed combinations in an organ. This system is mainly used in larger instruments and is in chromatic piano and button accordions handle with registerable choirs standard.

Symbols

In the accordion literature, graphic symbols have prevailed for registration. In a three-part circuit is represented by dots, how many choruses sound in each pitch. However, this system fails when the choir is the fifth very rare 22/3 'are present. In addition, one finds especially in older literature, further notations, with combinations of letters or numbers written above each other.

• Letters: Here is the letter P ( piccolo ) for the high, E ( einchörig ) are used for the mean and O for the lower octave. Several choirs in middle octave with T ( tremolo ) and the full works, so everything what is available, abbreviated as V. Of course there are also all sorts of combinations (see table below). In addition there are also the above-mentioned English abbreviation (L, M, MM, MMM, H).

• Digits: In this case, usually 3 digits are written one above the other. The respective number indicates how many choirs will be played in each pitch. This means 0/3/1: no high octave ( 0), with a double tremolo ( 3) and lower octave (1).

Occasionally, especially in "classic" literature, there is also the above-mentioned indication of the footages. Here is a table with the common registers in the respective notation.

It should additionally be mentioned that a distinction between tremolo and double tremolo as good as does not occur, since only a few instruments have different registers for these two timbres.

Execution

The register switches may be arranged as a toggle switch on the treble side or on the back of the lever treble keyboard. There are also so-called chin registers that are implemented as buttons similar to the bass buttons and the rapid change the registration with the chin allow the game flow without having to interrupt.

Bass tab

The register switch for the bass are usually arranged as a toggle switch between keyboard and bass bellows. Even so, various combinations of related Oktavabständen reed plate sets are selected. Small instruments often have no such bass register. But can the case of instruments that have only basic bass and major chords, the third to be switched off from the major chords with a registry switch whereby a makeshift game is made possible in minor keys with bass accompaniment.

In contrast to the treble registers both the octaves of the individual choirs as well as the registers compositions from single instrument are in standard or Stradella bass dependent, without any cross-vendor standards have been established. Many instruments waive a term of the registers, and composers renounce mostly on bass registers Information in her pieces, unless they are playing melody on bass.

• Handzuginstrumentenbau
• Musical register