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<title>Examples of Generator Usage - Audacity Manual</title>
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<h1 id="firstHeading" class="firstHeading" lang="en">Examples of Generator Usage</h1>
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<div id="bodyContent" class="mw-body-content">
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<div id="siteSub">From Audacity Development Manual</div>
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<div id="jump-to-nav" class="mw-jump">Jump to: <a href="#column-one">navigation</a>, <a href="https://alphamanual.audacityteam.org/man/Examples_of_Generator_Usage#searchInput">search</a></div>
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<div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><h2><span class="mw-headline" id="Example_1:_Insert_two_seconds_of_silence_at_the_start_of_the_track_as_a_.22lead-in.22">Example 1: Insert two seconds of silence at the start of the track as a "lead-in"</span></h2>
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<ol><li>Click the the "Skip to Start" button <a href="https://alphamanual.audacityteam.org/man/File:Rewind.png" class="image"><img alt="Rewind.png" src="../m/images/0/01/rewind.png" width="16" height="16" /></a> or press <span class="kbrd" style="background-color: #e0e0f0">Home</span> to place the cursor at the start of the track.</li>
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<li>Choose Silence from the Generate menu, accessed by: <span class="menu">Generate > <a href="generate_menu.html#silence" title="Generate Menu">Silence</a></span>.</li>
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<li>Specify two seconds of silence by clicking on the final digit of the two digits that represent seconds, then overtype it with "2". The highlight then moves to the next digit.
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<ul><li>If the value is showing at 30.000 seconds with "3" highlighted, type "02". </li>
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<li>To change the digit that is highlighted, either click on the one you want to highlight, or move the highlighting by using the <span class="kbrd" style="background-color: #e0e0f0">Left</span> or <span class="kbrd" style="background-color: #e0e0f0">Right</span> arrow keys on your keyboard. </li></ul></li>
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<li>Click the <span class="button">OK</span> button or press <span class="kbrd" style="background-color: #e0e0f0">Enter</span> on your keyboard.</li></ol>
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<p><br />
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</p>
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<h2><span class="mw-headline" id="Example_2:_Replace_a_30_second_section_of_audio_starting_at_1_minute_15_seconds_with_a_tone">Example 2: Replace a 30 second section of audio starting at 1 minute 15 seconds with a tone</span></h2>
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<ol><li>Click in the track at 1 minute 15 seconds (underneath "1:15" in the <a href="timeline.html" title="Timeline">Timeline</a> above the track).
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<ul><li>Or for greater accuracy, enter 1 minute 15 seconds in the <b>Selection Start</b> box of <a href="selection_toolbar.html" title="Selection Toolbar">Selection Toolbar</a>.</li></ul></li>
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<li>Drag your mouse to the right to select 30 seconds of audio, then release the mouse button.
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<ul><li>Or for greater accuracy, select <b>Start and End</b> from the cogwheel menu in <a href="selection_toolbar.html" title="Selection Toolbar">Selection Toolbar</a>, then enter 1 minute 45 seconds in that box. </li>
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<li>Alternatively, select <b>Start and Length</b> from the cogwheel menu and enter 30 seconds.</li></ul></li>
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<li>Choose Tone from the Generate menu, accessed by: <span class="menu">Generate > <a href="generate_menu.html#tone" title="Generate Menu">Tone</a></span>.
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<ul><li>If you used the mouse and now see in "Duration" that the selection is a little too short or long, move the highlighted digit as required using the <span class="kbrd" style="background-color: #e0e0f0">Left</span> or <span class="kbrd" style="background-color: #e0e0f0">Right</span> arrow keys on your keyboard, then type over that digit. To generate exactly 30 seconds, all the digits for <i><b><a href="glossary.html#sample" title="Glossary">samples</a></b></i> should be zero.</li></ul></li>
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<li>Specify the <b>Waveform</b> type, <b>Frequency</b> and <b>Amplitude</b> required in the dialog box. </li>
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<li>Click the <span class="button">OK</span> button or press <span class="kbrd" style="background-color: #e0e0f0">Enter</span> on your keyboard.</li></ol>
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<p><br />
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</p>
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<div class="note"><b>Advanced:</b> To insert or replace audio whose length must be specified in <i><b><a href="glossary.html#audio_cd" title="Glossary">CDDA</a></b></i> or film frames:
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<ol><li>Open the context menu by clicking the triangle to right of the Duration digits
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<li> Choose the required <a href="audacity_selection.html#selection_formats" title="Audacity Selection">Selection Format</a>. </ol>
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You can also open the context menu by hovering over or selecting in the Duration digits, then right-clicking or using a keyboard equivalent.</div>
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<p><br />
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<a href="generate_menu.html" title="Generate Menu"><b>|<</b> Generate Menu</a>
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<h3>Navigation</h3>
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<ul><li> <a href="../index.html" title="Main Page"><span title="Front page, complete with clickable image of Audacity screen.">Manual Home Page</span></a>
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<ul><li> <a href="audacity_tour_guide.html" title="Audacity Tour Guide"><span title="A quick tour of selected features of Audacity. It doesn't tell you how to use features it would be much too long if it did. Rather it tells you about some of the features that exist in Audacity and will help you learn a little about those.">Tour Guide</span></a></li></ul></li>
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<li> <a href="how_to_use_audacity.html" title="How to use Audacity"><span title="Quick Help, Audacity Foundations, Editing with Audacity, Help with Advanced Topics">Using Audacity</span></a>
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<ul><li> <a href="../quick_help.html" title="Quick Help"><span title="A brief guide to help you get started with Audacity">Getting Started</span></a></li>
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<li> <a href="how_to_use_audacity.html" title="How to use Audacity"><span title="A comprehensive guide to using Audacity">How-Tos</span></a></li>
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<li> <a href="tutorials_for_audacity.html" title="Tutorials for Audacity"><span title="A guide to the tutorials that provide step-by-step instructions for performing common tasks in Audacity">Tutorials</span></a></li>
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<li> <a href="tips.html" title="Tips"><span title="A guide to particular aspects of working with Audacity: Navigation. Playback, Audio Alignment">Tips</span></a></li></ul></li>
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<li> <a href="../index.html#reference" title="Main Page"><span title="The components of the Audacity Graphical User Interface">Audacity GUI</span></a>
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<ul><li> <a href="menu_reference.html" title="Menu Reference"><span title="A guide to the menus and submenus in Audacity">Menu Bar</span></a></li>
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<li> <a href="toolbars_overview.html" title="Toolbars Overview"><span title="A guide to the various Toolbars used in Audacity">Toolbars</span></a></li>
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<li> <a href="audio_tracks.html" title="Audio Tracks"><span title="A guide to the various types of track">Tracks</span></a></li>
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<li> <a href="index_of_effects_generators_and_analyzers.html" title="Index of Effects, Generators and Analyzers"><span title="A quick index to the Effects, Generators and Analyzers that are shipped with Audacity">Effects</span></a></li></ul></li>
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<li> <a href="customization.html" title="Customization"><span title="Adjust settings, change keyboard shortcuts, add plugins">Customizing</span></a>
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<ul><li> <a href="preferences.html" title="Preferences"><span title="A guide to Preferences, which let you change most of the default behaviors of Audacity">Preferences</span></a></li>
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<li> <a href="keyboard_shortcut_reference.html" title="Keyboard Shortcut Reference"><span title="A list of all the commands in the Audacity menus and all pre-defined keyboard shortcuts">Shortcut keys</span></a></li>
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<li> <a href="customization.html#plugins" title="Customization"><span title="You can download and install plugins to add extra functionality to Audacity. Plugins can give you extra effects, or more audio generation and analysis capability.">Plugins</span></a></li>
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<li> <a href="themes.html" title="Themes"><span title="Audacity now comes supplied with four pre-configured, user-selectable themes. This enables you to choose the look and feel you prefer for Audacity's interface.">Themes</span></a></li>
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<li> <a href="customizing_toolbar_layout.html" title="Customizing Toolbar Layout"><span title="Audacity's toolbars can all be re-positioned (in the tooldocks or free-floating) and some can be resized.">Toolbars</span></a></li>
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<li> <a href="manage_effects_generators_and_analyzers.html" title="Manage Effects, Generators and Analyzers"><span title="Manage your list of available built-in Effects, Generators, Analyzers and plugins with the Plugin Manager">Effects</span></a></li></ul></li></ul>
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<ul><li> <a href="../index.html#reference" title="Main Page"><span title="Reference guide to the Audacity project window - you can hover over and click on the image to learn more">Reference</span></a>
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<ul><li> <a href="searching_the_manual.html" title="Searching the Manual"><span title="Tips on how to Search the Audacity Manual">Search the Manual</span></a></li>
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<li> <a href="digital_audio.html" title="Digital Audio"><span title="A beginner's guide to digital audio">Digital Audio</span></a></li>
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<li> <a href="glossary.html" title="Glossary"><span title="Brief explanations of technical terms related to digital audio, with some links to Wikipedia for much more comprehensive explanations">Glossary</span></a></li>
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<li> <a href="scripting_reference.html" title="Scripting Reference"><span title="Audacity Commands that are in menus, that can be used from Macros, Nyquist and Python">All Commands</span></a></li>
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<li> <a href="faq_errors.html" title="FAQ:Errors"><span title="FAQ on common errors encountered when using Audacity">Errors</span></a></li>
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<li> <a href="subject_index.html" title="Subject Index"><span title="A short, limited, index of the Manual">Index</span></a></li></ul></li>
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<li> <a href="faq.html" title="FAQ"><span title="Frequently Asked Questions - most common questions are answered in the FAQ">FAQ</span></a></li></ul>
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<ul><li> <span title="Audacity Forum (best place for support requests)"><a rel="nofollow" class="external text" href="https://forum.audacityteam.org/">Forum</a></span></li>
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<li> <span title="Audacity Wiki Home Page"><a rel="nofollow" class="external text" href="https://support.audacityteam.org/">Audacity Support</a></span></li>
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<li> <span title="Audacity Latest Release"><a rel="nofollow" class="external text" href="https://www.audacityteam.org/download/">Latest Release</a></span></li></ul>
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<div align="center"><ul id="f_list"><li>This version created on 2025-12-04 - <a href="https://alphamanual.audacityteam.org/man/Examples_of_Generator_Usage">Check current version of this page (development Manual)</a></li></ul></div>
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