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<ul class="navigation"><li class="prev"><a accesskey="p" class="prev" href="WSB3074C87-9719-4f66-8971-2831E89BA74Aa.html" title="Looping, stretching, and pitch shifting"><img src="images/blank.gif" alt="Previous" width="17" height="17" /></a></li><li class="next"><a accesskey="n" class="next" href="WSDBD7CFDE-40DD-4285-AC8A-C2F736356F85a.html" title="Stretch time and shift pitch"><img src="images/blank.gif" alt="Next" width="17" height="17" /></a></li></ul><div class="hierarchy" id="hierarchy"><a href="WS3323129D-B2F3-43c0-B401-8D1EFE022412.html"><b>Home Page</b></a> / <a href="WS3323129D-B2F3-43c0-B401-8D1EFE022412.html"><b>Using Soundbooth CS5</b></a> / <a href="WSA4F1AB8C-4A6B-4077-B566-1799573F3021a.html"><b>Editing and repairing audio files</b></a> 

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        <h1>

          Create and optimize loops

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        <div id="minitoc"><div class="t"><div class="b"><div><ul id="minitoc-links"><li><p><a href="#WSF8045742-0254-4712-8450-086D6CE88607"><h1 class="topictitle1">Create a loop</h1>

</a></p></li><li><p><a href="#WSF879D0B7-898E-443b-9DEE-9BE92B000E6D"><h1 class="topictitle1">Smooth out loop transitions</h1>

</a></p></li><li><p><a href="#WSFADDC5C9-426D-4f96-B254-7B504C72CE03"><h1 class="topictitle1">Preview only loop transitions</h1>

</a></p></li><li><p><a href="#WS5DBF9CE9-184A-48f8-96B7-CFA9281DE64E"><h1 class="topictitle1">Adjust beat detection settings</h1>

</a></p></li></ul></div></div></div></div><div><p>Audio

that loops seamlessly creates a perfect soundtrack for many Flash

animations and video spots.</p>

</div>

<div id="WSF8045742-0254-4712-8450-086D6CE88607" class="nochunk"><a name="WSF8045742-0254-4712-8450-086D6CE88607"><!-- --></a><h2 class="topictitle2">Create a loop</h2><div><ol><li><p>In the Tasks panel, click Create Loop. </p>

<p>In

the transport controls, Soundbooth automatically enables the Loop Playback

option <img src="images/playlooped_r.png" />.</p>

</li>

<li><p>Press the spacebar to start playback.</p>

</li>

<li><p>In the Editor panel, select a time range for the loop.</p>

</li>

<li><p>In the Tasks panel, fine-tune the Loop In Point, Out Point,

and Duration settings.</p>

<div class="tip"><img src="images/tip_help.png" />Click the Previous

Beat and Next Beat arrows to quickly adjust the selected range.

Click the zoom icons to magnify related audio.</div></li>

<li><p>Select from the following options:</p>

<dl><dt class="dlterm">Lock Duration</dt>

<dd xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:xs="http://www.w3.org/2001/XMLSchema">Restricts the loop to the currently specified duration. If

you need a loop of precise length, select this option. Then manually

adjust the in point and out point, or click the Previous Beat and

Next Beat arrows to automatically jump from one potential loop to

the next.</dd><p class="dlseparator"></p><dt class="dlterm">Show Beat Indicators</dt>

<dd xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:xs="http://www.w3.org/2001/XMLSchema">Displays beats in the Editor panel. (If beats are densely spaced,

an orange gradient appears at the top of the waveform. To see individual

beats, zoom in.)</dd><p class="dlseparator"></p></dl>

</li>

<li><p>Click Save Loop As to save to a new file.</p>

</li>

</ol>

</div></div>

<div id="WSF879D0B7-898E-443b-9DEE-9BE92B000E6D" class="nochunk"><a name="WSF879D0B7-898E-443b-9DEE-9BE92B000E6D"><!-- --></a><h2 class="topictitle2">Smooth out loop transitions</h2><div><p>By default, Soundbooth transitions from loop out points

to in points without cross-fading. That default works well for percussive

sounds, but more sustained sounds benefit from a smooth cross-fade.</p>

<ol><li><p>In the Create Loop task, expand the Settings section.</p>

</li>

<li><p>Select Auto-Smooth Loop Point.</p>

</li>

</ol>

</div></div>

<div id="WSFADDC5C9-426D-4f96-B254-7B504C72CE03" class="nochunk"><a name="WSFADDC5C9-426D-4f96-B254-7B504C72CE03"><!-- --></a><h2 class="topictitle2">Preview only loop transitions</h2><div><p>By default, Soundbooth previews the entire loop. To precisely

fine-tune the transition from out point to in point, preview the

transition instead.</p>

<ol><li><p>In the Create Loop task, expand the Settings section.</p>

</li>

<li><p>Select Play Transition Only.</p>

</li>

</ol>

</div></div>

<div id="WS5DBF9CE9-184A-48f8-96B7-CFA9281DE64E" class="nochunk"><a name="WS5DBF9CE9-184A-48f8-96B7-CFA9281DE64E"><!-- --></a><h2 class="topictitle2">Adjust beat detection settings</h2><div><ol><li><p>To

display beats in the Editor panel, choose View &gt; Beats.</p>

</li>

<li><p>To fine-tune beat detection, choose Tasks &gt; Create Loop.

Then, in the Tasks panel, expand the Settings section and adjust

the following options:</p>

<dl><dt class="dlterm">Minimum and Maximum Frequency</dt>

<dd xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:xs="http://www.w3.org/2001/XMLSchema">Specify the main frequency range that beats occur in. The

fundamental frequencies for bass drum, for example, range from 40

to 80 Hz. By contrast, snare drum emphasizes frequencies from 1,000 to

2,000 Hz.</dd><p class="dlseparator"></p><dt class="dlterm">Sensitivity</dt>

<dd xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:xs="http://www.w3.org/2001/XMLSchema">Detects main beats at low settings, and adds intermediate

beats at high settings.<div class="tip"><img src="images/tip_help.png" />Appropriate frequency

and sensitivity settings depend upon audio content. Experiment with

different settings while viewing displayed beats in the Editor panel.</div></dd><p class="dlseparator"></p><dt class="dlterm">Tempo-Based Detection</dt>

<dd xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:xs="http://www.w3.org/2001/XMLSchema">Adjusts beat placement to better reflect rhythmic, musical

patterns.</dd><p class="dlseparator"></p></dl>

</li>

</ol>

<p><div xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:xs="http://www.w3.org/2001/XMLSchema" class="fignone"><img alt="" id="ed_beats" src="images/ed_beats.png" /><div class="figdesc">Beats in the Editor panel</div><br /></div></p>

<div class="tip"><img src="images/tip_help.png" />To display beats as simple lines without orange

semicircles, deselect Use Gradients in the Appearance preferences.

(See <a href="WS47FC204D-3CC5-4883-92F6-7FE65F789E9Ca.html">Change interface brightness and colors</a>.)</div></div></div>





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          <div id="relatedlinkinfo">More Help topics</div><div><p><a href="WSD175899F-A422-4bcc-AF85-F681E389E9CFa.html">Select time ranges</a></p><p><a href="WS327B80A4-A41C-4cbc-9818-8A6B36F861A8.html">Snap to markers, beats, frames, or the timeline ruler</a></p><p><a href="WS4BDD89AB-2242-4354-BDFB-CE821843B437a.html">Choosing an audio file format</a></p>

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