E-Mu SP1200 Bedienungsanleitung PDF herunterladen (Seite 79)

APPENDIX

The words of greatest interest to the SP-1200 relate to pitch and tempo. The SP-1200 sounds

can respond to different notes being sent over MIDI (see Section 6A); therefore, drum

sounds can be played by hitting individual notes on a MIDI keyboard. If the keyboard

sends velocity (dynamics) data, the SP-1200 will respond to this data. The SP-1200 can also

“slave” to tempo data being sent over MIDI from a master, or serve as a MIDI master to

which other MIDI devices refer for tempo information.

For a more detailed description of the complete MIDI vocabulary and MIDI in general,

refer to the book “MIDI For Musicians” by the author of this manual (available from music

stores or write to Music Sales, 24 East 22nd St., New York, NY 10010. The introduction date

is January 1986).

Dealing With “MIDIosyncracies”

There are certain compatibility problems between MIDI gear from different manufacturers;

however, many problems are created by operator error and/or a lack of understanding

how MIDI works. If you transmit information on one channel and have the “receiver” set

up for a different channel, forget it. MIDI is quite unforgiving that way...you can hit a bum

note and not too many people will notice, but send a computer a wrong number and it will

most definitely notice.

MIDI is a lot of fun provided that you don’t get discouraged when things go wrong. One of

the major problems is “data clogging” of the MIDI data stream. If MIDI is handling drum

data, keyboard synthesizer data, timing data, and so on, an excess of information can cause

the system to slow down or possibly malfunction. If this occurs, try to figure out what data

can be “filtered out” of the MIDI stream. For example, keyboard aftertouch information

requires much data; filtering this out of the data stream leaves more breathing room for

other data, such as the timing information received by the SP-1200.

SMPTE

SMPTE time code was adopted by the Society of Motion Picture and Television Engineers

in order to synchronize audio to video. Basically, SMPTE is a digital code that is recorded

on audio tape or video tape, or “burned into” film. This code outputs time information as

hours, minutes, seconds, and “frames” (1/30th of a second intervals). For synchronization,

sophisticated machines “look” at the SMPTE time code tracks on the audio and video

machines to be synchronized, and correct the speed of one unit vis-a-vis the other to main-

tain synchronization. These error corrections are very subtle and are not noticeable.

The SP-1200 uses SMPTE so that songs and sequences may be started at a specific frame of

time code. The SP-1200 can also write SMPTE time code on tape.

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 102 103

Keine Kommentare

E-Mu SP1200 Bedienungsanleitung Seite 79