10
VII. TRANSPOSER
Vast computer capability makes it possible to perform the sometimes difficult task of
transposing, while allowing the organist to play in the notated key. The GeniSys™ Controller
controls the operation of the Transposer. The GeniSys™ Controller is located at the left side of
the console.
Transposition to any of the twelve musical keys is possible. When the organ's power is first
turned ON, the GeniSys™ Controller window displays a brief message then displays M 1,
indicating the first capture memory level. Also displayed is the Transposer setting of neutral
pitch. The Transposer is displayed as a large digit within the GeniSys™ Controller display (
“
0
”
is displayed on the right side of the display).
To shift the music to a higher key, you must first move the cursor's position in the GeniSys™
Controller's display window so that the
“
0
”
symbol is selected. To move the cursor, repeatedly
press the button on the GeniSys™ Controller labeled "CURSOR" until the
“
0
”
symbol is
selected. Once the
“
0
”
symbol is selected, turn the GeniSys™ Controller's Rotary Dial to select
the new musical key. Turning the dial in a clockwise manner selects higher keys and causes the
organ's pitch to rise. Turning the dial in a counter-clockwise manner selects a lower key and
causes the organ's pitch to go lower. The pitch can be raised a maximum of five half-steps or
lowered a total of seven half-steps. Be aware that the Transposer’s range settings "wrap around"
from the plus five half-step setting to the minus seven half-step setting.
A red indicator light (LED) on the face of the GeniSys™ Controller illuminates any time the
Transposer setting is moved from the
“
0
”
or neutral pitch position.
Why Transpose?
Because a song’s range does not always suit the vocal range of a particular singer. By
adjusting the Transposer, the piece can be sung more comfortably and effectively.
Because some instruments are non-concert pitch. A trumpet in B
b
, for example, can play
the same music as the organist, if the Transposer knob is set two half steps lower.
Because hymn singing can sometimes be improved by a more favorable key selection.
VIII. ACOUSTIC PORTRAIT™
Allen Organs are the only digital organs to bring the science of sampling to acoustics! Ordinary
electronic reverb is a synthetic imitation of acoustics “applied to” the sound, not created as an
integral part of it. Acoustic Portrait™ produces the real thing in exacting detail!
Acoustic Portrait™ begins with a sampling process using impulse responses that measure an
actual room’s acoustic properties. These measurements are then stored in the organ's computer
memory. Through an advanced real-time mathematical process called “convolution”, the
acoustics of the sampled room actually become an integral part of the organ’s sound, producing a
noticeably smoother, more natural result than synthetic reverb. Allen engineers have recorded
the acoustics of cathedrals and other acoustically desirable buildings throughout the world. With
advanced processors (DSP) and patented low-latency convolution algorithms, Acoustic
Portrait™ reproduces the true acoustic response of each original room with stunning realism!
Each organ equipped with Acoustic Portrait™ features 10 different Acoustic Portrait pallets,
ranging from intimate rooms to cavernous cathedrals.
