Yamaha MU90R User Manual download pdf (Page 143)

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APPENDIX

1) Voice Extension by Bank-Select LSB

Variations of basic GM voices are stored in banks. To select a variation, specify the

desired bank by sending the appropriate Bank-Select LSB value. Each bank is as-

sociated with a specific type of variation, so that voices are easy to locate.

2) Bank-Select MSB adds an SFX bank

The Bank-Select LSB method is not useful for extension of distinctive SFX voices that

have no meaningful variation. For this reason the XG format supports a full SFX bank

of extension effects, which you can select by sending a Bank-Select MSB value of 40H.

Bank-Select MSB 7Eh or 7Fh, in contrast, can be used to set any channel to rhythm-

part play.

●

Voice Modification: The XG format allows creation of extremely expressive control data

that can darken or lighten voices, delay or accelerate sound start-up, or implement many

other types of control. Most controls are issued by Control Change commands, although

System Exclusive messages are also used.

●

Effects: The XG format offers high-level effects support, enabling control of effects types,

circuit operation, and internal parameter settings for both basic and elaborate effects. De-

vices equipped with graphic equalizers will be able to modify ambience and sound to suit

the specific type of music being played.

●

External Input: Whereas existing tone generators create sound in response to internal data

only, the XG format provides for real-time participation by adding support for input of ex-

ternal audio signals. External signals can be processed by the mixer in the same way as

internal tone-generator data. A model that supports this function would allow you, for ex-

ample, to create karaoke data that can automatically set the microphone echo used for play-

back.

New MIDI messages not available under GM format

1. Control Change

Bank Select

Portamento Time

Portamento

Sostenuto

Soft Pedal

Harmonic Content

Release Time

Attack Time

Brightness

Portamento Control

Effects Send Level 1 (Reverb)

Effects Send Level 2 (Chorus)

Effects Send Level 3 (Variation)

NRPN Part Parameter Control

All Sound Off

2. Channel Mode Messages

3. Polyphonic Aftertouch

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Yamaha MU90R User Manual Page 143

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