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DigiRack Plug-Ins Guide 4

DigiRack Plug-Ins Guide94is enabled, fidelity can be affected. For example, time expansion as a result of Time Correction when lowering pitch can cause

Chapter 6: DigiRack AudioSuite Plug-Ins 95To use the Reference Pitch:1 Select the audio material you want to use as a pitch reference. Click the prev

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Chapter 7: Using Digi ReWire 97chapter 7Using Digi ReWire Pro Tools supports ReWire version 2.0 technol-ogy developed by Propellerheads Software. Re-W

DigiRack Plug-Ins Guide98ReWire RequirementsTo use the ReWire plug-in, you will need: •A Digidesign-qualified Windows or Macin-tosh computer running Pr

Chapter 7: Using Digi ReWire 99Using ReWireThe ReWire plug-in is installed when you install Pro Tools. All inter-application communica-tions between P

DigiRack Plug-Ins Guide100Tempo and Meter ChangesPro Tools transmits both Tempo and Meter data to ReWire client applications, allowing ReWire-compatib

Appendix A: DSP Requirements for TDM Plug-Ins 101appendix aDSP Requirements for TDM Plug-InsThe number of TDM plug-ins you can use at one time depends

DigiRack Plug-Ins Guide102Mono and Stereo DigiRack Plug-Ins on HD CardsThe following table compares the maximum number of instances of each DigiRack T

Appendix A: DSP Requirements for TDM Plug-Ins 103Maximum instances are approximately half at 88.2 kHz and 96 kHz, and approximately a quarter at 176.4

Chapter 2: Installation 5 chapter 2 Installation Installing Plug-InsThe Digidesign DigiRack plug-ins are installed when you install Pro Tools. For mo

DigiRack Plug-Ins Guide104“Partial” indicates that a single instance of the multi-mono plug-in is sharing more than 1 DSP chip.* Instance counts are p

Appendix A: DSP Requirements for TDM Plug-Ins 105Monitoring DSP UsageThe System Usage window (Windows > Show System Usage) shows approximately how

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Appendix B: DSP Delays Incurred by TDM Plug-Ins 107appendix bDSP Delays Incurred by TDM Plug-InsVirtually all TDM plug-ins incur some amount of signal

DigiRack Plug-Ins Guide108≈Table 3. Samples of delay incurred by each real-time DigiRack TDM plug-in on HD cardsPlug-InSamples of delay on HD cardsEQ

Index 109Numerics7 Band, 2–4 Band, or 1 Band (EQ III) 41AAccuracy control 93, 94adjusting EQ 56Algorithm control 62Attack control 64, 66AudioSuitebuff

DigiRack Plug-Ins Guide110configuring AudioSuite Buffer 37Convert Plug-In pop-up 18Copy Settings command 26copying a plug-in setting 28CPU meter 8CPU

Index 111HHall algorithm 62Hardware 13Hardware Buffer Size 9Harmonic 13HD-series cardsDSP delays 107Hi Frequency Cut control 63High-Pass Filter contro

DigiRack Plug-Ins Guide112NNoise Reduction 13Noise Shaping 59, 60non-real-time plug-ins 31Normalize plug-in 89Note control 94Oopening multiple plug-in

Index 113Root Settings folder 26specifying 27RTAS plug-ins 1improving performance 9Ssaving plug-in settings 27Save Plug-In Settings To command 27Save

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Chapter 3: Working with Real-Time Plug-Ins 7chapter 3Working with Real-Time Plug-InsReal-time plug-ins process audio nondestruc-tively in real time. T

DigiRack Plug-Ins Guide8The System Usage window (Windows > Show System Usage) shows how much DSP is available on your system, and gives an approxim

Chapter 3: Working with Real-Time Plug-Ins 9Improving RTAS Plug-In PerformanceYou can increase the number of RTAS plug-ins your system can use concurr

DigiRack Plug-Ins Guide10Delay in Digital Signal ProcessingDSP processing in digital audio systems incurs signal delay of varying amounts. Such delays

Chapter 3: Working with Real-Time Plug-Ins 11Low-Latency Recording with Virtual MIDI Instruments When a MIDI track that is routing MIDI data to a virt

DigiRack Plug-Ins Guide12Shared arrangements let you make more effi-cient use of your system’s processing power.Pre-Fader OperationReal-time plug-ins

Chapter 3: Working with Real-Time Plug-Ins 13Organizing Plug-InsYou can customize how plug-in lists (plug-in menus) are organized in the Insert Select

Copyright This guide is copyrighted ©2005 by Digidesign, a division of Avid Technology, Inc. (hereafter “Digidesign”), with all rights reserved. Unde

DigiRack Plug-Ins Guide14menus display plug-ins by their manufacturer (such as Digidesign, Eventide, Line 6, McDSP), with individual plug-ins listed i

Chapter 3: Working with Real-Time Plug-Ins 15To insert a plug-in on a track: Click the Insert Selector on the track and se-lect the plug-in that you

DigiRack Plug-Ins Guide16Moving and Duplicating InsertsYou can move or duplicate an insert by dragging it to a different position on the same track or

Chapter 3: Working with Real-Time Plug-Ins 17Clip Indicators(Pro Tools 6.4 and Higher Only)Many plug-ins provide meters that let you see when the proc

DigiRack Plug-Ins Guide18Track Selector Accesses any non-MIDI track in a session.Insert Position Selector Accesses any insert on the current track.Plu

Chapter 3: Working with Real-Time Plug-Ins 19Auto Lets you enable individual plug-in controls for automation recording. See “Automating Plug-Ins” on p

DigiRack Plug-Ins Guide20To open an additional Plug-In window: Shift-click the Insert button for the additional plug-in.To open Plug-In windows for e

Chapter 3: Working with Real-Time Plug-Ins 21Linking and Unlinking Controls on Multi-Mono Plug-insWhen a multi-mono plug-in is used on a multi-channel

DigiRack Plug-Ins Guide222 Change the value.•To increase a value, press the Up Arrow on your keyboard. To decrease a value, press the Down Arrow on y

Chapter 3: Working with Real-Time Plug-Ins 233 To hear the audio source you have selected to control side-chain input, click Key Listen.4 To filter t

Contents iii contents Chapter 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DigiRack Plug-Ins Guide24To utilize Tempo Sync:1 Insert a plug-in that supports Tempo Sync, such as the DigiRack Mod Delay II. 2 Click the Tempo Syn

Chapter 3: Working with Real-Time Plug-Ins 253 Choose the controls to automate and click Add. If there are multiple plug-ins on the same track, you c

DigiRack Plug-Ins Guide262 Click the Safe button so that it is highlighted.To disable plug-in safe mode: In the Plug-In window, click the Safe butto

Chapter 3: Working with Real-Time Plug-Ins 27Set As User Default Defines the current settings as the User Default for a specific plug-in.Settings Prefer

DigiRack Plug-Ins Guide28To load a previously saved setting: Choose the setting from the Librarian pop-up menu.To import a setting: 1 Choose Import

Chapter 3: Working with Real-Time Plug-Ins 29To change plug-in settings using the Next (+) and Previous (–) Settings buttons: Press the Plus (+) or M

DigiRack Plug-Ins Guide30Auditioning Plug-in SettingsWhen the Plug-in Settings dialog is open, you can have Pro Tools automatically scroll through and

Chapter 4: Working with AudioSuite Plug-Ins 31chapter 4Working with AudioSuite Plug-InsAudioSuite plug-ins differ from TDM and RTAS plug-ins in that t

DigiRack Plug-Ins Guide32Ping-Pong Delay Adds a stereo, ping-pong delay to the audio signal by feeding back the original signal to its opposite channe

Chapter 4: Working with AudioSuite Plug-Ins 33Playlist Applies AudioSuite processing only to regions currently selected in tracks/playlists in the Edi

DigiRack Plug-Ins Guide iv Chapter 4. Working with AudioSuite Plug-Ins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 The Au

DigiRack Plug-Ins Guide34(Whether the processed audio is added to the current playlist or only to the Regions List, is de-termined by the Selection Re

Chapter 4: Working with AudioSuite Plug-Ins 35The Preview function routes audio to the spe-cific outputs you have chosen with the Audition pop-up menu

DigiRack Plug-Ins Guide36Auto-File Naming of AudioSuite-Processed AudioWhen new audio files are created as a result of AudioSuite processing, Pro Tool

Chapter 4: Working with AudioSuite Plug-Ins 37Dither Plug-in AudioSuite plug-ins always create files that inherit the session’s bit depth. With the Dit

DigiRack Plug-Ins Guide38Using AudioSuite Plug-InsAudioSuite plug-ins can be applied to whole re-gions, partial regions, or selections that are made u

Chapter 4: Working with AudioSuite Plug-Ins 394 Adjust the plug-in controls to achieve the ef-fect that you want. These settings will determine how t

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Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 41chapter 5DigiRack Real-Time TDM and RTAS Plug-InsEQ IIIThe EQ III Plug-In provides a high-qualit

DigiRack Plug-Ins Guide42The 7 Band EQ and the 2–4 Band EQ share the same window and identical controls, but with the 2–4 Band EQ, a limited number of

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 43Dragging in the Frequency Graph DisplayYou can adjust the following by dragging the control poin

Contents v Chapter 6. DigiRack AudioSuite Plug-Ins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 EQ III . . . . .

DigiRack Plug-Ins Guide44Output Gain Control(7 Band EQ and 2–4 Band EQ Only)The Output Gain control sets the output gain af-ter EQ processing, letting

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 45Band Gain ControlEach Peak and Shelf EQ band has a Gain control for boosting or cutting the corr

DigiRack Plug-Ins Guide46Frequency Graph Display(7 Band EQ and 2–4 Band EQ Only)The Frequency Graph display in the 7 Band EQ and the 2–4 Band EQ shows

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 477 Band EQThe 7 Band EQ has the following available bands: High-Pass/Low Notch, Low-Pass/High Not

DigiRack Plug-Ins Guide48High-Pass/Low NotchThe High-Pass/Notch band is switchable be-tween High-Pass Filter and Notch EQ functions. By default, this

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 49Low Shelf/Low PeakThe Low Shelf/Peak band is switchable between Low Shelf EQ and Low Peak EQ fun

DigiRack Plug-Ins Guide50Low-Mid PeakThe Low-Mid Peak band boosts or cuts frequen-cies centered around the Frequency setting. The width of the band is

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 51High-Mid PeakThe High-Mid Peak band boosts or cuts frequen-cies centered around the Frequency se

DigiRack Plug-Ins Guide522–4 Band EQThe 2–4 Band EQ uses the same plug-in window as the 7 Band EQ, but on the 2–4 Band EQ, but a limited number of the

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 531 Band EQThe 1 Band EQ may be set to any one of six EQ types: High-Pass, Notch, High-Shelf, Low-

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DigiRack Plug-Ins Guide54High-Shelf EQThe High-Shelf EQ boosts or cuts frequencies at and above the Frequency setting. The amount of boost or cut is d

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 55Automating EQ III ControlsAll EQ III plug-in controls can be automated in Pro Tools. To automate

DigiRack Plug-Ins Guide56Adjusting EQA useful way to audition an EQ is to increase or decrease its gain several dB then sweep the fre-quency up or dow

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 57Peak EQ Boosts or cuts only those frequencies centered around the selected center frequency. The

DigiRack Plug-Ins Guide584 Choose MIDI > Click Options and set the Click and Countoff options as desired. 5 Begin playback. A click is generated

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 59would insert the Dither plug-in on a Master Fader to reduce session bit-depth from 24-bits to 16

DigiRack Plug-Ins Guide60If you want, you can choose not to use the Dither plug-in and instead utilize the full 24-bit resolution of Pro Tools’ digita

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 61Noise ShapingNoise shaping improves audio performance and lessens our perception of the noise in

DigiRack Plug-Ins Guide62Clip IndicatorThe Clip Indicator shows if clipping has oc-curred. It is a clip-hold indicator. If clipping oc-curs at any tim

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 63DiffusionDiffusion sets the degree to which initial echo density increases over time. High setti

Chapter 1: Introduction 1 chapter 1 Introduction Plug-ins are special-purpose software compo-nents that provide additional signal processing function

DigiRack Plug-Ins Guide64The Compressor reduces the dynamic range of signals that exceed a selected threshold by a spe-cific amount. The increase of i

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 65fast attack times and heavy limiting, you should generally use a proportionally longer release t

DigiRack Plug-Ins Guide66Limiting is used to prevent short-term peaks from reaching their full amplitude. Used judi-ciously, limiting produces higher

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 67Key Listen When enabled, this lets you listen to the reference track controlling the side-chain

DigiRack Plug-Ins Guide68External Key Enables and disables side-chain processing. Side-chain processing uses the vary-ing amplitude of a separate refe

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 69open for longer periods of time with a single crossing of the threshold. It can also be used to

DigiRack Plug-Ins Guide70The DeEsser reduces these unwanted sounds us-ing fast-acting compression. A Threshold con-trol sets the level above which com

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 71Mod Delay IIThe DigiRack Mod Delay II plug-ins provide time delay-based effects such as echo, sl

DigiRack Plug-Ins Guide72more high frequencies are attenuated. The max-imum value for LPF is Off. This lets the signal pass through without limiting t

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 73Groove Provides fine adjustment of the delay in percentages of a 1:4 subdivision of the beat. It

DigiRack Plug-Ins Guide 2 AudioSuite Plug-Ins AudioSuite plug-ins are used to process and modify audio files on disk, rather than non-destructively

DigiRack Plug-Ins Guide74Signal Generator ControlsFrequency Sets the frequency of the signal in hertz. Values range from a low of 20 Hz to a high of 2

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 75fades to minimize undesirable artifacts. The re-sult is a processed signal that is transposed in

DigiRack Plug-Ins Guide76Ratio Indicates the ratio of transposition be-tween the original pitch and the selected trans-position value. Crossfade Adjus

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 77TimeAdjuster(TDM Systems Only)The TimeAdjuster plug-in provides three func-tions: • Compensation

DigiRack Plug-Ins Guide78Using TimeAdjuster for Manual Delay CompensationDSP processing in all digital systems incurs de-lay of varying amounts. You c

Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 79To view time delay values and use TimeAdjuster to compensate for the delay:1 In the Mix window,

DigiRack Plug-Ins Guide80Trim ControlsPhase Invert Inverts the phase (polarity) of the input signal to change the frequency response characteristics b

Chapter 6: DigiRack AudioSuite Plug-Ins 81chapter 6DigiRack AudioSuite Plug-InsEQ IIIThe EQ III Plug-In provides a high-quality 7 Band, 2–4 Band, or 1

DigiRack Plug-Ins Guide82The features of these plug-ins are non-real-time, but otherwise identical to their real-time coun-terparts.Dynamics IIThere a

Chapter 6: DigiRack AudioSuite Plug-Ins 83Limiter II AudioSuite plug-inGate II AudioSuite plug-inExpander/Gate II AudioSuite plug-inDeEsser AudioSuite

Chapter 1: Introduction 3 About www.digidesign.com The Digidesign Web site (www.digidesign.com) is your best online source for information to help yo

DigiRack Plug-Ins Guide84ChorusChorus adds a shimmering quality to audio ma-terial by combining a time-delayed, pitch-shifted copy of an audio signal

Chapter 6: DigiRack AudioSuite Plug-Ins 85FlangerThe Flanger animates and adds a swirling, mov-ing quality to audio material by combing a time-delayed

DigiRack Plug-Ins Guide86Multi-Tap DelayThe Multi-Tap Delay adds up to four indepen-dently-controllable delays or taps to the original audio signal. U

Chapter 6: DigiRack AudioSuite Plug-Ins 87To accommodate for this, place the region in a track, and select the desired audio plus an amount of blank s

DigiRack Plug-Ins Guide88InvertThe Invert plug-in reverses the polarity of se-lected audio. Positive sample amplitude values are made negative, and al

Chapter 6: DigiRack AudioSuite Plug-Ins 89DelayThe Delay plug-in provides time delay-based ef-fects, with up to 10.9 seconds of delay, at any session

DigiRack Plug-Ins Guide90Max Peak At Specifies how close to maximum level (clipping threshold) the peak level of a se-lection is boosted. Set this val

Chapter 6: DigiRack AudioSuite Plug-Ins 91Signal GeneratorThe Signal Generator plug-in produces audio test tones in a variety of frequencies, waveform

DigiRack Plug-Ins Guide92Time Compression/ ExpansionThe Time Compression/Expansion plug-in ad-justs the duration of selected regions, increasing or de

Chapter 6: DigiRack AudioSuite Plug-Ins 93Min Pitch Sets the minimum, or lowest, pitch that will be used in the plug-in’s calculations during the Time