Numark NS6 Reference Manual page 27

Beat Grid Waveform View
The Beat Grid is placed on top of the waveform overview. It is displayed as follows:
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A thick white line indicates the beginning of each Beat Grid Bar.
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Each Beat Grid Bar has the bar number at the top of the marker.
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The first Beat Marker is called the Downbeat Marker and is a thick red line on the first beat.
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The Downbeat Beat Marker will be bar number 1.
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Each Beat Grid Bar is divided up into 4 thin line divisions.
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A thick red line also indicates a manually set Beat Marker.
Before Creating a Beat Grid
Setting up a Beat Grid relies on the track having an accurate BPM value so ITCH can set the Beat Grid markers on the track's beats or
transients (see "How to Analyze Files" under the "Preparing Your Files" section in GETTING STARTED).
Note: BPM analysis is the most refined in the most current version of ITCH. If you started using a new version of ITCH, we highly
recommend analyzing your library again in that new version. To do this, enter Offline Player Mode then hold down Ctrl and click the
"Analyze Files" button.
Creating a Beat Grid
ITCH will attempt to determine the first transient (this could be a kick drum or bass note) and use this to calculate the downbeat Beat
Marker. Once the downbeat Beat Marker is set, ITCH uses the track's BPM to create a Beat Grid automatically throughout the track. If
the BPM is accurate, this could be all you need to do. If not, you may need to adjust the Beat Grid, or manually set more Beat Markers
to allow for some tempo variations.
To check if the Beat Grid has calculated the markers correctly, skip forward through the track and see if the markers fall on the beats or
not (after a breakdown is a good place). We also recommend skipping to the track's outro and see if the markers are still falling on the
beats.
Editing a Beat Grid
If the Beat Grid requires editing, turn on Grid Edit Mode by pressing Alt +
spacebar (repeated pressing of this toggles between the Virtual Decks) or by
clicking the "Grid Edit" button on the Virtual Deck. When Grid Edit Mode is on,
the Grid Edit button on the Virtual Deck will flash and a green bar will appear
above the waveform. To turn Grid Edit Mode off, press "Esc" or click the Grid
Edit button again.
Grid Edit Mode can be used with your ITCH hardware connected or in Offline Player Mode. You may find it easier to make adjustments
to the Beat Grid with the track not playing. To save changes made to a Beat Grid, press Enter. (Pressing "Esc" or clicking the Grid Edit
button will exit Grid Edit Mode without saving any changes you have made to the Beat Grid.)
To edit the Beat Grid, use the following functions:
Set a Beat Marker
Pressing NS6's SET button or pressing your keyboard's X or Alt button + double-clicking with the mouse will place a Beat
Marker at the playhead position. The Beat Marker will snap to the closest transient. By default, ITCH will place a Beat Marker
on the first detected transient.
Tip: Set new Beat Markers where there is a tempo change in the track to allow the tempo to warp around these points. With
the track playing you can tap or click in Beat Markers on the fly. The Beat Markers will snap to the closest transient.
Deleting a Beat Marker
If you have set an incorrect Beat Marker, you can delete one, several, or all markers. To delete the closest marker to the
playhead, press NS6's CLEAR button (while also holding NS6's SHIFT button) or press your keyboard's Delete key or Alt +
Shift + click with the mouse. To clear all Beat Markers, press Shift + Delete.
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