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DAW Lecture 4

Pro Tools 9: Time Based Editing (Lecture 4)

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.
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)
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
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
Tempo Tap Mode: Tempo Editor o Tools and Modes apply o Cut, Copy and Paste o Can Choose Tempo Marker Density
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
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
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.
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.
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.
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.
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
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
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
Tick-based Audio Region start times lock to Bar|Beat. Region duration does not change.
Memory Locations Time Properties Markers and Selections can use (Bar|Beat) or Sample-based reference
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
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
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
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
Elastic Audio Basics Provides track-based Real-Time and Rendered Time Compression and Expansion (TCE).
Enabling Elastic Audio o On Track  Real Time or  Rendered processing: Creates Rendered Files Folder
Elastic Audio Basics: Plug-ins Types:  Polyphonic  Rhythmic  Monophonic  Varispeed  X-Form Preferences  Default Plug-in  Enable Elastic on New Audio Tracks
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
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.
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.
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
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.
Created by: la.maricha