TC-Helicon VoiceOne Sysex Manual - Manual (Page 2)

Page 2
TC-Helicon Vocal Technologies
www.tc-helicon.com
SysEx message type Identifier
VoiceOne Request Preset 45
VoiceOne Request Parameter 47
VoiceOne Request Shift Map 51
VoiceOne Preset Data 20
VoiceOne Parameter Data 22
VoiceOne Shift Map Data 31
VoiceOne Data Request messages
Preset Request - 45 :
is 2 bytes representing the number of the preset requested. See above for description of
preset number representation. The data transmitted by VoiceOne upon receiving this message
will be formatted as a Preset Data message (see below for complete description)
Parameter Request - 47 :
is 2 bytes. The first byte defines the group to which the parameter belongs and the
second byte identifies the parameter within the group. See below for a complete listing of
parameters and grouping. The data transmitted by VoiceOne upon receiving this message will be
formatted as a Param Data message (see below for complete description)
Shift Map Request - 51 :
is 1 byte. The value of this byte is ignored. The data transmitted by VoiceOne upon
receiving this message will be formatted as a Shift Map Data message (see below for complete
description)
VoiceOne Data messages
Preset Data - 20 :
is 344 bytes organized as follows (in sequence):
2 bytes Preset number (see above)
20 bytes Preset name (as ASCII characters)
12 bytes Custom correction scale (in chromatic scale degrees)
1 byte Number of notes in custom scale
16 bytes (cs) Shift map (4x3 8-bit bytes packed – see below for description)
4 bytes (cs) Accidental attributes of custom scale (see below for description)
288 bytes (cs) 9 24-bit values for each of the 8 FX groups (packed data – see below)
1 byte
Checksum of the data marked cs (see below for description)
Packed data: The idea of packing the data is to take a 24-bit value (the normal width of
parameters in Voice One) and represent it in 4 bytes of 7 bits each. The
first three bytes hold (in sequence) bits 0-6, 7-13 and 14-20 of the 24-bit
value. The fourth byte hold bits 21-23 of the 24-bit value as LSB’s with
zeros in the remaining bits.
Shift map: The shift map is represented internally as 12 8-bit bytes (see VoiceOne