Noise Gate: Difference between revisions - Bose Portable PA Knowledge

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<div><h2>Introduction</h2>

<div><h3>Introduction</h3>

One cause of feedback is open microphones on the stage. You can use the '''Noise Gate''' in your ToneMatch mixer to shut down microphones that are not being used. When the sound presented to the microphone is loud enough (it reaches a predefined threshold), the gate will open allowing sound through.

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=== Initial Setup for a Microphone ===

You can use the Comp/Gate Noise Gate to automatically turn off a microphone when it is not being used. This can reduce unwanted background noise and increase the gain-before-feedback of your system.

~~You can use the Comp/Gate Noise Gate to automatically turn off a microphone when it is not being used. This can reduce unwanted background noise and increase the gain-before-feedback of your system.~~

The Noise Gate prevents signals below a certain volume level (threshold) from reaching the outputs of the mixer. You set that certain volume level by setting the '''Thresh'''old parameter.

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# (T4S/T8S) Leave Ramp/Speed at '''50%''' (T4S/T8S)

=== Fine-Tuning ===

If you find this cuts off the microphone even while you are speaking directly into the microphone try setting the Thresh to -50.0dB. You may have to experiment with the Thresh and Speed to get the Noise Gate to work with different vocalists and microphones.

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<br>The Ramp/Speed describes a ratio of how the noise gate attenuates the sound once the threshold has been reached (how quickly the reduction is applied).

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=== Video with T1 ===

The same principles apply to the T4S/T8S, but they have the Ramp control.

<html>

Here's a quick video to show you how to do it.

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 <div class="tocdiv">
      <div>__TOC__</div>
-     <div><h2>Introduction</h2>
+     <div><h3>Introduction</h3>
 One cause of feedback is open microphones on the stage. You can use the '''Noise Gate''' in your ToneMatch mixer to shut down microphones that are not being used. When the sound presented to the microphone is loud enough (it reaches a predefined threshold), the gate will open allowing sound through.
      </div>
 </div>
+=== Initial Setup for a Microphone ===
+You can use the Comp/Gate Noise Gate to automatically turn off a microphone when it is not being used. This can reduce unwanted background noise and increase the gain-before-feedback of your system.
-You can use the Comp/Gate Noise Gate to automatically turn off a microphone when it is not being used. This can reduce unwanted background noise and increase the gain-before-feedback of your system.
 The Noise Gate prevents signals below a certain volume level (threshold) from reaching the outputs of the mixer. You set that certain volume level by setting the '''Thresh'''old parameter.
@@ Line 18: / Line 19: @@
 #    (T4S/T8S) Leave Ramp/Speed at '''50%''' (T4S/T8S)
+=== Fine-Tuning ===
 If you find this cuts off the microphone even while you are speaking directly into the microphone try setting the Thresh to -50.0dB. You may have to experiment with the Thresh and Speed to get the Noise Gate to work with different vocalists and microphones.
@@ Line 28: / Line 29: @@
 <br>The Ramp/Speed describes a ratio of how the noise gate attenuates the sound once the threshold has been reached (how quickly the reduction is applied).
 -->
+=== Video with T1 ===
+The same principles apply to the T4S/T8S, but they have the Ramp control.
 <html>
 	Here's a quick video to show you how to do it.