Yamaha PF-500 Owner's Manual - Page 96

Data Compatibility Voice Allocation Format With MIDI, voices are assigned to specific numbers, called "program numbers." The numbering standard (order of voice allocation) is referred to as the "voice allocation format." • Voices may not play back as expected unless the voice allocation format of the song data matches that of the compatible MIDI device used for playback. [Main Voice Allocation Formats] I GM System Level 1 This is one of the most common voice allocation formats. • Many MIDI devices are compatible with GM System Level 1, as is most commercially available software. • The PF-500 is compatible with GM System Level 1. I XG XG is a major enhancement of the GM System Level 1 format, and was developed by Yamaha specifically to provide more voices and variations, as well as greater expressive control over voices and effects, and to ensure compatibility of data well into the future. • The PF-500 is compatible with XG. • Performance data recorded with preset voices on the PF-500 can be played on other XG-compatible instruments. I DOC (Disk Orchestra Collection) This voice allocation format is compatible with many of Yamaha's MIDI devices, including the PF500 series instruments. This is also common format used with various Yamaha software. The PF-500 is compatible with DOC. • Even if the devices and data used satisfy all the conditions above, the data may still not be completely compatible, depending on the specifications of the devices and particular data recording methods. 96 PF-500