License Agreement 2 This warranty is in lieu of all warranties, whether oral or written, Terms and Conditions expressed, implied or statutory. Drawmer makes no other COPYRIGHT This manual is copyrighted © 2005 by Drawmer Electronics, Ltd. With all rights reserved. Under copyright laws, this manual may not be duplicated in whole or in part without the written consent of Drawmer. ONE YEAR LIMITED WARRANTY Drawmer Electronics Ltd.
Contents License agreement 2 Introduction About DRAWMER About the Drawmer TourBuss Plug-in Panel Overview 4 4 4 Using the Drawmer TourBuss Key Filters Key Filter Control Description 5 5 Expander Expander Control Description Expander Operation Quick Start 6 6 7 7 Noise Gate Noise Gate Control Description Quick Start Noise Gate Operation 8 8 9 Compressor Compressor Control Description Compressor Setup and Operation 10 10 11 Limiter Limiter Control Description Limiter Operation 12 12 12 Bracketi
Introduction Introduction About Drawmer The name Drawmer is synonymous with professional signal processing in recording studio, broadcast and live sound reinforcement environments. The company which is based in Yorkshire, England was founded by Ivor Drawmer whose passion was designing audio circuits.
Using the Drawmer TourBuss 5 Using the Drawmer TourBuss Key Filters Key is the term used to denote a signal that can trigger (open) a Gate/Expander. The filters only affect the way TourBuss responds to the incoming programme material - they do not have any direct effect on the output signal unless key listen is selected.
Using the Drawmer TourBuss 6 Expander One of the perennial problems in using any form of compression is that maximum gain make-up occurs during extremely quiet passages or during pauses, where the noise floor is pulled up to an unacceptably high level, which results in an increase in background noise.
Release 5mS to 5S. Determines the speed at which the Expander closes to the Range setting, once the input signal has fallen below the level set by the Threshold. As a general rule, the release time should be set as fast as possible while ensuring that slowly decaying sounds, or sounds which include a lot of reverberation are not significantly shortened. With a slow, legato programme, very fast release times can result in possible undesirable sideeffects, due to the gain changing too quickly.
Using the Drawmer TourBuss 8 Noise Gate The TourBuss noise gate incorporates many impressive features, many pioneered by Drawmer, which are invaluable to the sound engineer and not found on conventional noise gates: • Variable high-pass and low-pass filters for ‘frequency conscious’ gating. • Comprehensive envelope control, attack, hold, decay and range. • Ultra-fast response time. • ‘Key listen’ facility. • ‘Traffic light’ display giving clear indication of gate status. • Threshold metering.
Quick Start Setting of controls can be done very quickly using the following suggestions: • Select the Key trigger source using the Key section. • Initially, the LF filter should be set fully anticlockwise, with HF fully clockwise. This will allow the full audio spectrum of the Key input programme to be monitored. Set the Range control fully anticlockwise and the Key Listen selector switch to Normal. • Set the Attack, Hold. Decay and Range controls.
Using the Drawmer TourBuss 10 Compressor The compressor combines aspects of both the traditional ratio style compressor and the soft-knee approach, making it equally adept at creative work and unobtrusive level control.
Using the SDX100 11 Gain 0dB to +20.5dB During compression the signal is attenuated, gain may be required to produce the desired output level. Only apply gain until the limiter operates on signal peaks. G.R. Meter 0.0 to -30dB Bypass When enabled the signal is passed through to the limiter without compression, effectively turning the Compressor plugin into a stand alone limiter that can be used at the end of the chain of plugins open within the Venue system.
Using the Drawmer TourBuss Limiter Incorporated into the compressor is a separate Peak Limiter. Limiting is an extreme form of compression, where the output signal is sharply attenuated so that it cannot exceed a particular level. A further feature of the TourBuss suite is a peak limiter which allows the user to set an absolute output signal level that will not be exceeded.
Bracketing Filter A Bracketing Filter has been incorporated in to the TourBuss suite, providing Low and High 12dB per octave filters that attenuate any unwanted frequencies. Thus making it simple to remove unwanted frequencies without using the resources that a more complicated equaliser would utilise.
Contact Details Contact Details If, for some reason, you have problems with the software try contacting Digidesign technical support at: Digidesign, a division of Avid Technology, Inc. 2001 Junipero Serra Blvd, Daly City, CA 94014-3886, USA or find worldwide support at : www.digidesign.com/aboutus/contact/ If you would like further information about any of the Drawmer range of Noise Gates, Compressors, Distribution Amplifiers, Microphone Pre-Amplifiers etc. then visit the Drawmer website: www.drawmer.
