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Recently, a member of the PSR Tutorial Forum needed help using a Megavoice in a custom Tyros style. My answer seemed to be useful to a broader audience, so I decided to post my answer here. The information applies to PSR arrangers, too, because the Tyros and PSR share the same SFF1 and SFF2 (SFF GE) style formats.
Megavoice guitars are very different than regular guitar voices.
Regular voices are the usual MIDI voice: 128 velocity levels and only one basic sound. For example, nylon guitar is just the pitched, melodic sound of the notes either louder or softer depending on note velocity.
Megavoice guitars (and other Megavoices) are different. Please look at the Megavoice Map starting on page 16 of the Tyros Data List PDF.
Let’s take a look at the Mega NylonGuitar voice. For MIDI notes B5 and below, the MIDI velocity is broken into eight (8) ranges:
1- 20 Open soft 21- 40 Open med 41- 60 Open hard 61- 75 Dead 76- 90 Mute 91-105 Hammer 106-120 Slide 121-127 Harmonics
Each range plays a different kind of sound. So, the MIDI velocity determines which guitar sound. Then, the velocity within that limited range determines how loud it will be.
Example 1: MIDI note A4, velocity 38 makes an Open Med guitar sound which is loud.
Example 2: MIDI note A4, velocity 2 makes an Open Med guitar sound which is quiet.
Example 3: MIDI note A4, velocity 110, makes a Slide guitar sound.
Now, let’s look at the last two columns in the Megavoice map, again, Mega NylonGuitar voice. For MIDI notes between C6 and B7, the Tyros plays a Strum noise. The velocity in this case determines the Strum noise loudness over the full range 1-127.
For MIDI notes above C8, the Tyros plays a Fret noise. The velocity determines the fret noise volume and is full range 1-127.
Example 4: MIDI note D8, velocity 127 plays a very loud fret noise.
The Megavoice mapping makes it more difficult to program (sequence) guitar parts than regular voices. The user needs to make sure that the MIDI note is in the desired range (B5 and under, above C6, etc.) and that the MIDI velocity controls what you want.
Yamaha’s proprietary CASM has a few settings to control Mega Voices. The bad news — you can’t change some of these settings.
When I program Megavoice into a style, I use two parts for each Megavoice:
Part 1: Pitched notes -- all note B5 and below NTR: ROOT TRANS or GUITAR NTT: MELODY or CHORD Part 2: Noise notes -- all notes above C6 NTR: ROOT FIXED NTT: BYPASS
You want the pitched notes to transpose. You don’t want the noise notes to transpose. (Please think of the noise notes like drum notes/sounds.)
I wrote a three part series of articles about capturing Motif/MOX arpeggios and converting them to PSR/Tyros styles:
- MOX performance to PSR style (part 1)
- MOX performance to PSR style (part 2)
- MOX performance to PSR style (part 3)
If you don’t care about Motif/MOX, then skip part one. Parts two and three are more generally useful and describe the conversion of a MIDI file to a style. Part three concentrates on Megavoice conversion.
Copyright © 2017 Paul J. Drongowski