BW Broadcast DSPXtreme-FMHD Spécifications

DSPXtreme-FMHDBroadcast Audio ProcessorOperational ManualVersion 1.30www.bwbroadcast.com

Quickstart10QUICk START1. Install the processor into the rack.2. Connect AC power to the unit, and turn on the power.3. Connect the analogue and / or

Introduction To Audio Processing11INTROdUCTION TO AUdIO PROCESSINGMost audio processors use a combination of compression, limiting and clipping to &ap

Source Quality And Pre-emphasis12SOURCE mATERIAl QUAlITYThe DSPXtreme has the ability to substantially improve the quality of your ON-AIR broadcast. H

Processing Structure13ThE dSPXTREmE ANd ITS PROCESSING STRUCTUREThe DSPXtreme broadcast audio processor can be used for processing audio prior to broa

Processing Structure14MixerThe six bands are 'virtually' mixed together at this stage. In truth, the six bands have become three. The three

Block Diagram15 ANALOG DIGITAL A/D SRC HPF INPUT LPF BPF BPF HPF P.R. BASSSHELFBASSPEAKPRE LOW LIM LMID LIM HMID LIM MB LIM MIDLIM

Menu Structure16 AES1 OUTPUT LEVEL AES2 OUTPUT LEVEL AES1 RATE AES2 RATE AES1 DE-EMPHASIS AES2 DE-EMPHASIS MENU: STEREO L

Processing Parameters17PROCESSING PARAmETERSUser Level: This parameter allows you to select between beginner and advanced modes. Beginner mode restric

Processing Parameters18'GATE THRESHOLD' The gate function prevents 'suck-up' of noise during periods of silence or low level audio

Processing Parameters19in 0.5dB steps.'LIMITER ATTACK' Controls the attack rate of the limiter, the time the limiter takes to respond to an

Table Of Contents2Table Of ContentsWarranty 3Safety 4Introduction to the DSPX treme 6DSPXtreme connections 7DSPXtreme m

Processing Parameters20'MID ATTACK' Controls the average attack rate of the B3 look-ahead limiter. This defines the energy dis-tributed into

Processing Parameters21Overdrive the main clipper to hear the effect of this control and then back the drive back down after the finesse control is se

Processing Parameters22limiter will drastically reduce the loudness of your signal and should be used only if the regulations in your country require

Processing Parameters23'DELAY COARSE' Adjusts the delay in seconds, from 0 s to 12 s in 0.1 s steps. 'DELAY MEDIUM' Adjusts the de

Setting Up The Processing24SETTING UP ThE PROCESSING ON ThE dSPXTREmEThis section has more detailed information on setting up the DSPXtreme’s processi

Setting Up The Processing25illustrate the effect of window gating on the control signal that controls the output waveform. The size of the win-dow can

Setting Up The Processing26The coupling control controls the amount of audio that is fed from one bands detector into the neighbouring bands detector.

Setting Up The Processing27you are free to experiment to get the bass sound you're after.Additionally, bass tune control allows control of the &a

Setting Up The Processing28The average attack time is perhaps the most important control in the dual time constant detector as it sets the balance bet

Setting Up The Processing29Without hold With holdUnless you have a specific reason to turn it off we recommend a setting of around -32dB but this may

BW Broadcast Technical ManualPage 3IntroductionBW Broadcast warrants the mechanical and electronic components of this product to be free of defects in

Setting Up The Processing30the bass-clipper. Band 3 and 4 serve the mid-clipper and band 5 and 6 serve the HF-clipper. Low pass, band pass and high pa

Setting Up The Processing31delay monitor output from the DSPXtreme as a studio feed.The final clipperThe final clipper, used in the FM processing path

Setting Up The Processing32more business and IM distortion would be introduced to the audio especially under higher levels of drive. If we were to fli

Setting Up The Processing33some of the harmonics which might result in slight increase of overshoots, depending on how much composite clipping you are

Getting The Sound You Want34GETTING ThE SOUNd YOU wANTWhile the DSPXtreme can help you obtain the sound that you want we must always take into account

Getting The Sound You Want35More CLARITYWe can obtain extra clarity and quality in several ways.Multi-band AGC:Slow down the release times.Decrease th

Getting The Sound You Want36Bass clipper: (FM USE)Increase the multi-band clipper drive.Increase the bass clip level.Set the bass clip mode and shape

Managing presets37mANAGING PRESETS (FRONT PANEl CONTROl)The DSPXtreme has an assortment of factory presets and provision for 16 user ones. While the f

Factory Presets38FACTORY PRESETSThe factory presets in the DSPXtreme are not supposed to be de facto standards by any means but are start-ing points f

Remote Control Application39REmOTE CONTROl OF ThE dSPXTREmEIn addition to the front panel LCD control system the DSPXtreme has a serial port and an et

BW Broadcast Technical ManualPage 4Safety InstructionsDETAILED SAFETY INSTRUCTIONS:All the safety and operation instructions should be read before the

Remote Control Application40 Remote application connection screenNET/LAN PORTThe DSPXtreme is equipped with a NET/LAN port for ease of remote control

Remote Control Application41When the DSPXtreme is connected the LED’s will show activity and the main controls window should show processing controls,

Remote Control Application42If you are not using dayparting or the external trigger port the default preset will always be the 'on air' pres

Remote Control Application43Loading presets from a PCThis option will pop up the standard windows load dialog box. You can browse to and select a pres

Remote Control Application44by clicking down on the arrows until you reach the off option. If off is currently selected you can click up to rotate thr

Remote Trigger Port45REmOTE TRIGGER PORTThe system menu contains the remote trigger port option from where it can be enabled or disabled.If enabled th

Clock Based Control (Dayparting)46ClOCk BASEd CONTROl (dAYPARTING)Your processor contains a battery backed up real time clock that can maintain the cu

Specifications47SPECIFICATIONSSpecifications apply for measurements from analog left/right input to stereo composite output and to FM analog left/righ

Specifications48Filtering: RFI filtered.MPX output 1Source Impedance: 10 Ohm Single-ended, floating over chassis ground.Load Impedance: 600 Ohm or gre

Preset Sheet49Preset 1 Preset 2 Preset 3 Preset 4INPUTSOURCEMODEANALOG LEVEL dBu dBu dBu dBuINPUT FAILHP FILTER Hz Hz Hz HzPHASE ROTATORPRE-EMPHASIS µ

BW Broadcast Technical ManualPage 5Safety InstructionsObject and Liquid Entry:Care should be taken so that objects do not fall and liquids are not spi

Preset Sheet50LIMIT. ATTACKLIMIT. DECAYCOMP. ATTACKCOMP. DECAYHOLD dB dB dB dBDELAYBAND 4DRIVE dB dB dB dBTHRESHOLD dB dB dB dBLIMIT. ATTACKLIMIT. DEC

Preset Sheet51STEREOLEVEL dBu dBu dBu dBuPILOT LEVEL % % % %PILOT PROTECTIONITU LIMITER dBr dBr dBr dBr19kHz SYNC

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Introduction6INTROdUCTION TO ThE dSPXTREmEThe BW Broadcast DSPXtreme is a new generation of digital audio signal processor that can be used to process

Connections7REMOTEAES/EBUEDITUPLOADSAVEDSPXtraOUTPUTPROCESSINPUTL IMITERS OUTPUTARIANE LEVELERINPUTDSPXtra100908070605040302010PILOT00-3-6-9-12-15-18

Meters8dSPXTREmE mETERSThe DSPXtreme has a dedicated LCD screen on the left displaying instant IO and processing metering. You can switch from process

Meters9G/R metering - six band limiterThe six band limiter displays gain reduction from 0dB to -24dB in 2dB steps. There is only one meter per stereo