Yamaha Portatone PSR-5700, Authorized Product Manual

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[F6] Utility & MIDI
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GENERAL MIDI DATA RECEPTlON/TRANSMlSSlON
ABOUT GENERAL MIDI
The existing MIDI protocol allows performance and other data to be transferred between different instruments, even if
they are from different manufacturers. This means, for example,. that sequence data that was originally created to control a
tone generator from manufacturer A can also be used to control a different tone generator from manufacturer B. Since the
voice allocation in different devices from different manufacturers is usually different, however, appropriate program
change data must be transmitted to select the right voices.
The General MIDI protocol was developed to minimize confusion and the need for re-programming when playing soft-
ware created by one MIDI device on another. This has been achieved by defining a standard voice allocation in which the
same or similar voices are accessed by the same program change numbers or MIDI channels. The current standard recog-
nized by the International MIDI Association is known as “GM System Level 1.” The PSR-5700 voice allocation complies
with the GM System Level 1 standard when it is switched to the DOC/GM mode. See the “GENERAL MIDI (GM) Voice
List” on page 254 for details.
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