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65 lines
2.5 KiB
65 lines
2.5 KiB
8 years ago
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<script type="text/x-red" data-help-name="AudioEffectEnvelope">
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<h3>Summary</h3>
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<div class=tooltipinfo>
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<p>Modify a signal with a DAHDSR (Delay Attack Hold Decay Sustain
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Release) envelope.
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</p>
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<p align=center><img src="img/dahdsr.png"></p>
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</div>
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<h3>Audio Connections</h3>
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<table class=doc align=center cellpadding=3>
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<tr class=top><th>Port</th><th>Purpose</th></tr>
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<tr class=odd><td align=center>In 0</td><td>Signal Input</td></tr>
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<tr class=odd><td align=center>Out 0</td><td>Signal with Envelope Applied</td></tr>
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</table>
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<h3>Functions</h3>
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<p class=func><span class=keyword>noteOn</span>();</p>
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<p class=desc>Begin the delay to attack, or the attack phase is
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delay is zero.
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</p>
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<p class=func><span class=keyword>noteOff</span>();</p>
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<p class=desc>Begin the release phase.
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</p>
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<p class=func><span class=keyword>delay</span>(milliseconds);</p>
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<p class=desc>Set the delay from noteOn to the attach phase. The
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default is zero, for no delay.
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</p>
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<p class=func><span class=keyword>attack</span>(milliseconds);</p>
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<p class=desc>Set the attack time. The default is 1.5 milliseconds.
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</p>
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<p class=func><span class=keyword>hold</span>(milliseconds);</p>
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<p class=desc>Set the hold time. The default is 0.5 milliseconds.
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</p>
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<p class=func><span class=keyword>decay</span>(milliseconds);</p>
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<p class=desc>Set the decay time. The default is 15 milliseconds.
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</p>
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<p class=func><span class=keyword>sustain</span>(level);</p>
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<p class=desc>Set the sustain level. The range is 0 to 1.0. The
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gain will be maintained at this level after the decay phase,
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until noteOff() is called.
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</p>
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<p class=func><span class=keyword>release</span>(milliseconds);</p>
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<p class=desc>Set the release time. The default is 30 millisecond.
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</p>
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<h3>Examples</h3>
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<p class=exam>File > Examples > Audio > Synthesis > PlaySynthMusic
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</p>
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<p class=exam>File > Examples > Audio > Synthesis > pulseWidth
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</p>
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<p class=exam>File > Examples > Audio > MemoryAndCpuUsage
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</p>
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<h3>Notes</h3>
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<p>To achieve the more common ADSR shape, simply
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set delay and hold to zero.</p>
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<p>The recommended range for each of the 5 timing inputs is 0 to 50
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milliseconds. Up to 200 ms can be used, with somewhat reduced
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accuracy</p>
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</script>
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<script type="text/x-red" data-template-name="AudioEffectEnvelope">
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<div class="form-row">
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<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
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<input type="text" id="node-input-name" placeholder="Name">
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</div>
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</script>
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