APPLIED ACOUSTICS SYSTEMS Strum Acoustic GS-1, Руководство пользователя

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62 Parameters
Additional information on the chord is available at the top of the display above the name of the
chord itself. When the chord detected contains no third or no fifth the corresponding no 3 or no 5
message is highlighted. Finally, while Strum can recognize a great variety of chords and find most
voicings used by guitar players, it is possible that it will not find a voicing in its chord database for
a particular chord played on the keyboard. In these cases, the
no match message is lit. Strum will
still display the chord name and propose a guitar voicing constructed according to a certain set of
rules. The chord should still sound right but the message is displayed in order to indicate that the
voicing chosen by
Strum is probably very difficult to play on the guitar and might therefore not be
commonly used by guitar players.
6.7.2 Chord
On the guitar, chords can be voiced in many different
ways. The specific voicing chosen by Strum for a chord de-
pends on the Type parameter. One can choose between open,
movable and drop chords as described in section 4.6. The
voicing can also be made more precise by specifying what
should be the lowest note of the chord played by
Strum . In
root position, the lowest note of the guitar voicing is always the root of the chord played on the
keyboard and detected by Strum . In lowest position, the lowest note of the voicing follows the
lowest note played on the keyboard. It is also possible to tell Strum in which neck position to play
chords using the Playing Position parameter. The position is specified in fret number and indicates
the lowest fret on which the lowest note of the chord should be played. It is not always possible to
satisfy this constraint and
Strum will respect this position whenever it is possible. This parameter
is of course only valid for movable chords and it is therefore inactive when open chords are chosen.
The last parameter in the Chords section is called Time . This parameter is used to control the
delay between the moment a chord is played on the keyboard and the moment it is triggered by
Strum . This parameter is necessary because when a chord is played on the keyboard, the notes are
not necessarily played simultaneously. Strum must therefore wait a certain time before sending a
group of notes to the chord detection module in order to make sure that it has received all the notes
which are supposed to form the chord. This delay should not be smaller than the interval between
the moment the first and last notes are played. Using a value too small for this parameter will result
in individual notes of the chord being played before is is actually strummed. The value of this
parameter should vary depending on the playing skill and style of the keyboard player and should
be adjusted to a value allowing enough time for a chord to be played on the keyboard and be well
detected by
Strum
.
6.7.3 Loop
The loop player is used to control Strum with MIDI loops. Loops can contain both chords and
strumming key sequences. In this case, playing a loop is similar to playing a tune. Loops can also