Pro Tools 9: Time Based Editing (Lecture 4)
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Manual Tempo Mode | Show MIDI Control and Expanded Transport views, Manual Tempo mode allows only one tempo throughout the session. Tempo ruler must be inactive, at times referred as the Conductor Icon.
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| Manual Tempo Mode | Allows you to change tempo by:
Typing values in the tempo display. (Drag mouse up or down on
BPM tempo display.
Tap Tempo - click in Tempo field, then Tap “T” key, or Tap on MIDI keyboard (Preference)
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| Tempo Map Mode | Can use multiple tempos (tempo map).
• Conductor = Tempo Ruler Enable.
-No Manual Tempo controls; still displays tempo at cursor.
Inserting tempos:
• Control-click Tempo ruler, or Click the “+” button next to “Tempo” in the ruler view
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| Tempo Map Mode: Tempo Operations | Event > Tempo Operations
• Allows gradual changes in tempo over time
• Constant, Linear, Parabolic, S‐Curve, Scale, and Stretch
• Insert and Cut Time
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| Tempo Tap Mode: Tempo Editor | o Tools and Modes apply
o Cut, Copy and Paste
o Can Choose Tempo Marker Density
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| Tempo Tap Mode: Meter | o A.k.a. Time Signature
o Double-click Meter icon, or
o Control-click in Meter ruler
o Click the “+” button next to “Meter” in the Time base view
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| Tempo Tap Mode: Meter | Meter map is not affected by Conductor on/off
o Can use multiple meters
No complex meters
No compound click
o Change Meter: Event > Time Operations >Change Meter
• Allows for selection-based meter changes
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| Identify Beat | Establishes a tempo/meter map for audio whose tempo is not known
Find the tempo of audio recorded
without click
Find the tempo of imported audio
Enable grid-based editing.
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| Identify Beat: Procedure 1 | Highlight Conductor icon
Select audio phrase by ear
• Ignore initial Grid lines and Grid Mode
• Make sure selection accurately represents the length in bars and beats.
o Possibly loop the
selection to double check timing.
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| Identify Beat: Procedure 2 | Event > Identify Beat
• CMD + I
Specify musical length in dialog
• Type in Start and End Locations
Inserts Bar|Beat Markers at ends of selection
• Pro Tools calculates tempo changes from the phrase.
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| Audio is recorded and played back with what sample rate accuracy? | At 48 kHz, that’s a resolution of .02 ms. Timing resolution depends on sample rate.
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| MIDI is recorded and played back with what tick accuracy? | At 960,000 ppqn and a tempo of 120 BPM, that’s a resolution of .0005 ms. Timing resolution depends on tempo
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| Understanding Track Timebases: Tick-based | Data is locked to a specific Bar|Beat|Tick location
Always follows session tempo
When the tempo changes, data moves to a different sample location
Default mode for MIDI
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| Understanding Track Timebases: Sample-based | All data is locked to a specific sample location
Unaffected by session tempo
Default mode for audio
Sample-based vs. Tick-based Operation
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| Tick-based Audio | Region start times lock to Bar|Beat. Region duration does not change.
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| Memory Locations Time Properties | Markers and Selections can use (Bar|Beat) or Sample-based reference
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| TCE Trim Tool | TCE - (Time Compression Expansion):
Adjusts speed/tempo without adjusting pitch.
o Can trim to match audio to current tempo/meter map
o Preference > Processing
Create settings through AudioSuites
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| Acid Files / Loops (.acd extension) | o Embedded tempo and key information.
o Software for creation:
Soundforge
Sony’s Acid Pro
Acid Xpress
o Pro Tools does not recognize key information
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| Rex Files / Loops 1 | Audio Files embedded with rhythmic points:
Sliced at zero crossings.
Native to Recycle from Propellerheads
Extension named after Recycle EXport
• .rex supports mono
• .rx2 supports mono/stereo
Data Compressed format: no loss in quality
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| Rex Files/ Loops 2 | Preferences for Importing Acid / Rex:
Preferences > Processing
• Import REX Files as Region Groups
Automatically Create Fades
• Drag and Drop from Desktop Conforms to Session
Tempo:
o No Files
o REX and ACID Files
o All Files
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| Elastic Audio Basics | Provides track-based Real-Time and Rendered Time Compression and Expansion (TCE).
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| Enabling Elastic Audio | o On Track
Real Time or
Rendered processing: Creates Rendered Files Folder
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| Elastic Audio Basics: Plug-ins | Types:
Polyphonic
Rhythmic
Monophonic
Varispeed
X-Form
Preferences
Default Plug-in
Enable Elastic on New Audio Tracks
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| DigiBase Browsers | o Audio Files Conform to Session Tempo Button
o Preferences
Drag and drop prefs
o Analysis
o Adjusting Event Sensitivity
Region > Elastic Properties
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| Elastic Track Views: Analysis vs. Warp | • Analysis View:
o Lets you edit detected Event Markers.
• Warp View:
o Manually “warp” audio to adjust the timing of audio events.
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| Elastic Audio Markers: Event Markers | Analysis View
Indicates detected audio events.
Use Pencil Tool to create and move
• OPT to delete
Grabber
• Move
• CNTRL to create.
• OPT to delete
Always Tabs, regardless of whether Tab to transient is off.
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| Elastic Audio Markers: Warp | Anchor audio to specific points in timeline
Stretch or compress areas of audio relative to those fixed points.
To Create:
• Click with Pencil Tool OR,
• CNTRL click with Grabber Tool
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| Elastic Audio Markers: Tempo Event-Generated | Are not editable in track, only in Tempo Editor
Indicates only where tempo adjustments have been applied.
If change track time-base from ticks to samples, these markers will convert to regular, editable Warp markers.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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