Roland MT-90U 用户手册

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About Music Files
 
What are Music Files?
 
Music files contain musical information such as how long a 
pitch is played, the force applied to the key or note played, 
and other such information. Performance data is transmitted to 
the MT-90U from music files saved in USB memory, and 
played back as songs. This is different from an audio CD, 
since the music file does not contain a recording of the sound 
itself. This makes it possible to change the tempo and key 
freely, allowing you to use the data in many different ways.
 
Regarding Copyright
 
Use of the internal songs and audio files for any purpose other 
than private, personal enjoyment without the permission of the 
copyright holder is prohibited by law. Additionally, this data 
must not be copied or used in a secondary copyrighted work 
without the permission of the copyright holder. Please be 
aware that if you create derivative works that are based on 
existing copyrighted material, such as commercially available 
SMF music files, such works may violate copyright law if used 
for any purpose other than personal enjoyment. Roland takes 
no responsibility for any copyright violation you may commit 
by creating such works.
 
VIMA TUNES   
 
 
VIMA TUNES is a Roland specification for music files that 
contain image and lyric data, allowing you to enjoy songs 
with lyrics and images simultaneously. When data bearing the 
“VIMA TUNES” logo is played back on a device that bears 
the same logo, lyrics can be shown on the screen of a 
connected external display or television, letting you enjoy 
karaoke or watch a slide show.
 
* This unit (MT-90U) cannot play back VIMA TUNES images.
 
SMF Music Files
 
SMFs (Standard MIDI Files) use a standard music file format 
that was formulated so that media containing music files could 
be widely compatible, regardless of the manufacturer of the 
listening device. An enormous variety of music is available, 
whether it be for listening, practicing musical instruments, or 
karaoke, etc.
 
SMF with Lyrics   
 
“SMF with Lyrics” refers to a SMF (Standard MIDI File) that 
contains lyrics. When Music Files carrying the “SMF with 
Lyrics” logo are played back on the MT-90U, the lyrics will 
appear in its display.
 
General MIDI   
 
General MIDI is a set of recommendations which seeks to 
provide a way to go beyond the limitations of proprietary 
designs and standardize the MIDI capabilities of sound 
generating devices. Sound generating devices and music files 
that meet the General MIDI standard bear the General MIDI 
logo. Music files bearing the General MIDI logo can be 
played back using any General MIDI sound generating unit to 
produce essentially the same musical performance.
 
General MIDI 2   
 
The upwardly compatible General MIDI 2 recommendations 
pick up where the original General MIDI left off, offering 
enhanced expressive capabilities and even greater 
compatibility. Issues that were not covered by the original 
General MIDI recommendations, such as how sounds are to 
be edited, and how effects should be handled, have now been 
precisely defined. Moreover, the available sounds have been 
expanded. General MIDI 2 compliant sound generators are 
capable of reliably playing back music files that carry either 
the General MIDI or General MIDI 2 logo. In some cases, the 
conventional form of General MIDI, which does not include the 
new enhancements, is referred to as “General MIDI 1” as a 
way of distinguishing it from General MIDI 2.
 
GS Format   
 
The GS Format is Roland’s set of specifications for 
standardizing the performance of sound generating devices. 
In addition to including support for everything defined by the 
General MIDI, the highly compatible GS Format additionally 
offers an expanded number of sounds, provides for the editing 
of sounds, and spells out many details for a wide range of 
extra features, including effects such as reverb and chorus. 
Designed with the future in mind, the GS Format can readily 
include new sounds and support new hardware features when 
they arrive. Since it is upwardly compatible with General 
MIDI, Roland’s GS Format is capable of reliably playing back 
GM Scores equally as well as it plays back music files that 
have been specifically created with the GS Format.
 
XGlite   
 
 
XG is YAMAHA Corporation’s tone generator format. It 
defines the ways in which voices are expanded or edited, 
along with the structure and type of effects, in addition to the 
General MIDI 1 specification. XGlite is a simplified version of 
XG tone generation format. You can play back any XG music 
files using an XGlite tone generator. However, keep in mind 
that some music files may play back differently compared to 
the original files, due to the reduced set of control parameters 
and effects.
 
The MT-90U Allows You To 
Use the Following Music Files
MT-90U_r_e1.book 57 ページ 2008年3月24日 月曜日 午後4時46分