Hauptwerk Tm; Scpop Tm; Table 10: Midi Messages Relevant To Hauptwerk - Classic Organ Works CMK-1 User Manual

TM
HAUPTWERK
[7]
Hauptwerk (German for 'Great Organ') is a computer simulation of a pipe organ. It produces a realistic organ sound
by use of a 'virtual sampler' technique. Traditionally, synthesizers used a small number of samples by recording keys
at intervals across the keyboard. In order to simulate all the keys, the samples were time-stretched. Hauptwerk uses a
three-to-five second sample of every pipe in the organ. To accommodate the intensive requirement for memory, a
high-speed personal computer must be used. With current technology, thousands of individual sample sounds can be
stored and recalled when a key is pressed. Thus, the software is able to capture many different and customizable organ
configurations and sounds which can be loaded via '.organ' files. The '.organ' file contains information regarding
number of stops, pistons, and keyboards in addition to other organ-related details.
Hauptwerk was initially designed for use with one MIDI keyboard which would be connected to the personal computer
through the sound card game port. If numerous keyboards were required, a MIDI merge box would have to be
purchased. However, the CMK not only performs the MIDI merge function but, also provides an interface for volume
controls, expression controls, and pistons. MIDI messages will then be sent through the MIDI out port to the personal
computer where Hauptwerk software will translate the MIDI message commands into actions on the organ. A table
listing the types of messages sent for the individual functions is shown below.
For more information or to download a shareware version of Hauptwerk software, please visit:
http://www.hauptwerk.co.uk
TM
SCPOP (not supported on the current version of the CMK)
Sound Canvas Pipe Organ Project (SCPOP) is a computer program that emulates organ features like stop changes,
keyboard coupling, tremolo, assignable memories, temperament changes, and the ability to choose different reverb
settings. All of the features can be accessed using the computer keyboard's keys like a true organ console.
SCPOP requires a Roland Sound Canvas MIDI Expander module and is only compatible with Roland hardware
containing the 'Sound Canvas' label [9]. The messages used to control SCPOP can be found in Appendix E.
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CMK-1 Manual (Issue-1)

Table 10: MIDI messages relevant to Hauptwerk

Function
Keyboards
Pedalboard
Stops
Pistons
Volume
Expression
Crescendo
Page-27
MIDI command
1. Note on/off
2. Channel number
3. Key number
1. Note on/off
2. Channel number
3. Key number
Note on/off
Program change
Program change
Program change
Program change
[8]
October 20, 2004