org.symbian.tools.wrttools.doc.WebDeveloper/html/GUID-F9E3AC4C-2883-450F-835C-B5F8E2AC6325.html
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<p><strong>Syntax:</strong></p>
<pre class="codeblock" id="GUID-871468F0-F7B8-428B-BA9D-2EA0AC8C8F00">[void] sysinfo.beep(Int frequency, Int duration)</pre>
<p><strong>Description:</strong></p>
<p>The <code>beep</code> method produces a beep tone in a specified frequency for a specified duration.</p>
<p><strong>Argument:</strong></p>
<ul>
<li><p><code>frequency</code>:</p>
<p>Defines the frequency of the tone measured in Hz (Hertz).</p>
</li>
</ul>
<div class="note"><p><strong class="note_title">Note: </strong>The maximum and minimum values for frequency are naturally device-specific. If the specified frequency is out of the device's supported range, the maximum frequency is applied.</p>
</div>
<ul>
<li><p><code>duration</code>:</p>
<p>Defines the duration of how long the beep tone lasts. The period is measured in milliseconds.</p>
<p>If the duration is <code>0</code>, the beep tone will last infinitely.</p>
</li>
</ul>
<p><strong>Return value:</strong></p>
<p>This method does not return a value.</p>
<p><strong>Remarks:</strong></p>
<p>To stop an infinitive beep, call the beep method again with any value that is different from <code>0</code>.</p>
<p><strong>Example code:</strong></p>
<pre class="codeblock" id="GUID-01F0C36C-6B44-4764-AACF-6766A4836A96">function beepAlert()
{
// call the beep function with frequency 220Hz
// for the duration 2 seconds
sysinfo.beep(220, 2000);
}</pre>
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