<h2>Sound Performance Lab DeS Dual Band De-Esser — 500-Series Module</h2>
<span style="font-size: 16px; font-style: italic;">The Dual-Band De-Esser expands on this concept by making use of two frequency bands that can be used independently or jointly.<br /></span><br />
The Dual-Band De-Esser has two de-esser stages increase processing effectiveness without introducing audible artifacts. Focused processing with high and low bands makes it possible to process sibilant sounds with great precision. Furthermore, input signals are automatically adjusted so the processing is uniform, regardless of the distance between source and microphone. The Male/Female modes adapt processing in the lower band to male or female voices.<br /><br />Now, the Dual Band De-Esser DeS is also available in 500 Series format.<br /><br />Back in the 1990‘s, we developed an alternative way to process signals based on phase cancellation in order to reduce sibilance. Unlike traditional compression methods, this procedure is much more unobtrusive and simplifies control to one single parameter. SPL‘s De-Esser quickly became a standard reference among recording studios, broadcast stations and live sound engineers.<br /><br /><h3>Application: Voice (Male/Female)</h3><p>The Male/Female switch allows you to adjust the Low-Band De-Esser to the type of voice being processed. These values have been determined by practical experience, so that the processor adapts better to gender. Nevertheless, you cannot take for granted that these settings will suit every single male and female voice.<br /><br />Consider the Male/Female function as an additional tool to help you set the Low-Band De-Esser more precisely according to your needs. Always trust your ears to find the best settings.</p><h3>Hi-S</h3>Use the Hi-S control to adjust the intensity of the sibilance reduction in the upper frequency range. The center frequency for sibilance recognition is set at 11.2kHz with a 3kHz  bandwidth. Scale values for the filter are displayed in dB. The actual reduction values, i.e. after phase cancellation, might be less. Please note that the Voice Male/Female button has no effect on the high band de-esser. In practice, for most applications, the best results are usually achieved when Hi-S setting  is set between 3 and 7.With the ON/Bypass button you can switch the DeS into the signal path. If the button is in position “On”, the DeS is active. If the button is in position “Bypass”, the audio signal passes through unprocessed<br /><br /><h3>Lo-S</h3>Use the Lo-S control to adjust the intensity of the sibilance reduction in the lower frequency range. The center frequency for sibilance recognition is set at 7.6kHz in Voice Female mode and 6.4kHz in Voice Male mode. For more information, please refer to section “Voice Male/Female” on page 13. The bandwidth of the low band de-esser is  1.44kHz. Scale values for the filter are displayed in dB. The actual reduction values, i.e. after phase cancellation, might be less.In practice, for most applications, the best results are usually achieved when Lo-S setting is set between 3 and 7.<br /><br /><h3>High Band/Low Band De-Essing On/Off</h3>Use the High Band De-Essing On/Off button to turn the Hi-S reduction on or off. Use the Low Band De-Essing On/Off button to turn the Lo-S reduction on or off. You can use the two processing stages separately or jointly. They are connected in series as independent de-esser modules. The low band de-esser is set first in the chain. If both de-essers are engaged, there is interaction between them: a signal already processed with the low band de-esser is different from the raw material that the high band de-esser would otherwise process.<br /><br class="Apple-interchange-newline" /><div><div><a href="http://rsperackrevolution.com/" target="_blank"><img src="http://www.rspeaudio.com/v/vspfiles/assets/images/rackrevolution-small.png" alt="" align="" border="0px" /></a>
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		Don’t forget to check out 
		<a href="http://rsperackrevolution.com/" target="_blank" style="color: rgb(0, 0, 153); font-weight: bold;">RSPE’s Rack Revolution</a>, a virtual 500-series rack builder that lets you custom-configure the perfect 500-series lunchbox for your studio, DAW, or mobile recording rig. RSPE carries every 500-series module imaginable, including mic preamps, compressor-limiters, equalizers, and 500 power racks.
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<br /><h3>Dual Band De-Esser 500 Series Module Specifications:</h3><div id="c56913"><p class="paragraphNoMargin"><strong>Input</strong>:</p><ul><li>Balanced</li><li>Impedance: 20kOhm</li><li>Max. Input level: +22 dBu</li></ul><p class="paragraphNoMargin"><strong>Output:</strong></p><ul><li>Balanced<span id="1452761662412S" data-htmlarea-bookmark="true"> <br /></span></li><li>Impedance<span id="1452761667790S" data-htmlarea-bookmark="true"> </span>: 150 Ohm</li><li>Max. Output Level: +22 dBu</li></ul><p><strong>Frequency Range: </strong>10Hz -100kHz</p><p><strong>Noise: </strong>-93 dBu (A-weighted)</p><p><strong>Dynamic Range:</strong> 116 dB<span id="1452761493465S" data-htmlarea-bookmark="true"> </span></p><p class="paragraphNoMargin"><strong>CMRR:</strong> &gt; -80 dBu</p><p><em>(at 1 kHz, 0 dBu input level, unity gain)</em></p><p class="paragraphNoMargin"><strong>THD:</strong> 0,03%</p><p class="paragraphNoMargin"><em>(at 0 dBu input level, unity gain)</em></p><p class="paragraphNoMargin text-left"> <strong>Housing: </strong>Single Slot 500er-Serie rack modul</p><p><strong>Weight</strong>: 0,65 kg /1.43 lbs</p><p> <em>0dBu = 0,775V. Specifications subject to change without notice.</em><span id="1452761629696S" data-htmlarea-bookmark="true"></span></p></div><br />
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