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If the key offset value transposes the key number (MIDI note) outside the
allowable MIDI range (0–127), the key number will be transposed to the lowest or
highest octave within that range.
You can use the Key+ parameter to assist in preparing scores for instruments
whose music is written in something other than “concert” key (such as Bb
trumpet). For more information, see “Music Notation for Non-concert-key
Instruments” on page 563.
When you edit the Key+ parameter, pressing [ or ] changes the value by 12 instead
of by 10. This makes it easy to transpose by octaves.
To Set the Key Offset for a Track
1. In the track you want to change, click on the Key+ control.
2. Enter a value (1 = a semitone), or press the + or – key to change the key by a
single semitone. Use the [ or ] key to change the key by 12 semitones (one
octave).
You can also change the key offset in a variety of other ways, as described on page
132. To change the key offset for more than one track at a time, select the tracks
you want to change and choose Track-Property-Key+.
Adjusting the Note Velocity (Vel+)
Each MIDI note event has a velocity, which represents how fast the key was struck
when the track was recorded. On playback, the velocity offset parameter adjusts
the velocity data for all notes in the track by the designated amount. The value can
range from -127 to +127. The effect of changing velocities depends on the
synthesizer. Some synthesizers do not respond to velocity information. For others,
the effect varies depending on the sound or patch you have chosen. Normally,
higher velocities result in louder and/or brighter-sounding notes.
This parameter does not affect the velocity that is stored for each note event. When
the clip is displayed in other views, like the Piano Roll view, Staff view, or Event
List view, you will see the original velocities as they are stored in the file. You can
edit the velocity values in those views, or use the Process-Scale Velocity or
Process-Interpolate command.
Velocity is different from volume in that it is an attribute of each event, rather
than a controller that affects an entire MIDI channel. Here’s an example of where
this distinction might be important. Suppose you have several tracks containing
different drum parts. All of these parts would probably be assigned to MIDI
channel 10 (that’s the default channel for percussion in General MIDI). If you
change the volume setting for any track that uses channel 10, all the different
drum parts—regardless of what track they’re in—would be affected. If you change
the note velocity for one drum track, it will be the only one whose volume is
affected.
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