E-Mu PX-7 Specifications download pdf (Page 141)

PX-7 Owners Manual 129

Sequencer

Event Timing

Event Timing The following information is intended for advanced users. If you are just

getting started with PX-7 you can skip this section for now.

Songs and patterns both contain pre-sequence setup information that is

loaded just before a song or sequence plays. This pre-sequence information

is not reloaded when a pattern loops. Reloading this setup information

each time a pattern looped would cause data clogging and possible timing

errors in the sequence.



Events at Tick 0 are only

editable if the track is set to

“Ext”. You can only remove or

edit data from this location.

This is allowed so that you can

remove unwanted data going to

external synths.

• The ﬁrst two ticks (0 & 1) are reserved for pre-sequence setup informa-

tion. Tick 0 is reserved for the internal pre-sequence setup information.

Tick 1 is used to place your own pre-sequence setup information so

that it won’t loop and cause timing errors.

• Events (controller data, program changes, sysex, etc.) are played before

Notes, even if they are located on the same numbered Tick. This is done

so that volume changes and other programming information will be in

place when the notes turn on.

When a track is set to “ext” (external transmit only), you will be allowed

to see the tick 0 spot for EVENTS. This allows you to remove any pre-

sequence setup data (which is stored at Tick 0) left over from when the

track may have been internal or both.

Track Priority

The PX-7sequencer handles lower numbered tracks ﬁrst. Therefore, you

should put your most timing-critical data on low numbered tracks.

Normally this will not be important since the sequencer timing is so good,

but if you create very dense sequences, this information might be useful.

Notes

tick 0

tick 1

tick 2

tick 3

Events

tick 0

tick 1

tick 2

tick 3

Loop

Pre-Sequence

Setup Info

Pattern/Song Setup Info

Reserved for User Events

This chart shows how notes and other MIDI events are recorded at the beginning of a

pattern or song.

Notes are played after other MIDI events. Ticks 0 and 1 are reserved for pre-sequence

setup information which does not loop. Beginning at tick 2 of the pattern or song,

information is recorded normally (events ﬁrst, then notes).

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E-Mu PX-7 Specifications Page 141

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