Sonifex Redbox RB-AEC Handbook Download Page 1

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Manufacturers of audio & video

products for radio & TV broadcasters

Redbox RB-AEC

Acoustic Echo Canceller

HANDBOOK

Summary of Contents for Redbox RB-AEC

Page 1: ...Manufacturers of audio video products for radio TV broadcasters Redbox RB AEC Acoustic Echo Canceller HANDBOOK...

Page 2: ...part of the vendor Sonifex Ltd shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual No part of this manual may be reproduced...

Page 3: ...n 8 Calibration 9 Webserver Unit Discovery 10 Running The Webserver 10 Home Page 11 Far End and Near End Input Type 11 Adaption Status 11 Sample Rate 12 Offset 12 Reset Coefficients 12 Save Coefficien...

Page 4: ...uk y Internet www sonifex co uk As standard Sonifex products are supplied with a 1 year back to base warranty If you register the product online you can increase your product warranty to 2 years and...

Page 5: ...n the product has been registered at the Sonifex website when the Warranty Term is 24 months from the date of despatch the Contract means the quotation these Conditions of Sale and any other document...

Page 6: ...for any loss of profits or other economic losses The Company accordingly excludes all liability for the same e At the request and expense of the Purchaser the Company will test the Goods to ascertain...

Page 7: ...d with the following equipment so please check to ensure that you have all of the items below If anything is missing please contact the supplier of your equipment immediately Item Quantity Product Uni...

Page 8: ...imited hereby certify that the following product with serial number shown has been designed and manufactured in accordance with the following specifications EMC EN 55103 1 1997 Electromagnetic Compati...

Page 9: ...path of the mains power input For reasons of safety it is important that the correct rating and type of fuse is used Incorrectly rated fuses could present a possible fire hazard under equipment fault...

Page 10: ...nd does not use any of the hazardous substances identified in the European Union s Restriction of Hazardous Substances RoHS directive The manufacturing processes include the assembly of purchased comp...

Page 11: ...put from the presenter s feed by adapting to the environment in which the control room microphones are placed Although acoustic echo cancellation is more commonly implemented in telephony systems the...

Page 12: ...ransparent addition to an exisiting studio environment The canceller will auto detect analogue and digital inputs with sample rates up to 192kHz Digital output is available when using a digital input...

Page 13: ...3 Introduction 1 ANA AES Input ANA Output ANA Output AES Output ANA AES Input ADC DSP DAC SRC SRC SRC Fig 1 3 The RB AEC Functional Block Diagram...

Page 14: ...cally balanced with the following connections Pin 1 Screen Pin 2 Phase Pin 3 Non phase Reset Button Power LED The source of this XLR input must be from the audio feed that is the source of the echo Th...

Page 15: ...onfigurations for the Near End and Far End inputs Settings DIPSwitch Unit Settings are configured using a 4 way DIPSwitch Settings DIPSwitch 1 Far end digital input termination ON Terminated OFF Unter...

Page 16: ...lector output is normally HIGH Should a power failure occur this level will go low DGND Mute Input Detect Setting the mute input detect pin 4 to DGND 0V will disable adaption This may prevent the canc...

Page 17: ...phone signal at line level to the RB AEC near end input 2 Connect the gallery monitor signal at line level containing the presenter s microphone audio to the RB AEC far end input 3 Connect the RB AEC...

Page 18: ...vel Line Level The Solution 1 Connect the mixed studio microphones signal at line level to the RB AEC near end input 2 Connect the TBU output to the RB AEC far end input 3 Connect the RB AEC output s...

Page 19: ...s on Startup This will ensure that any saved coefficients are used next time the unit is switched on 4 Set the presenter s Far End silence detect threshold Levels below this value will disable the can...

Page 20: ...ing methodology to allow the unit to be a plug and play device Just simply connect it to the network and use it The unit is assigned an IP address using a DHCP server or a self assigned address using...

Page 21: ...inputs is shown Without digital lock detected the input type will be shown as Analogue When the canceller has detected digital lock the Digital input type will be displayed Far End and Near End Input...

Page 22: ...is performing poorly it may be necessary to reset the coefficient values and allow the AEC to recalculate Click to clear all current coefficient values Save Coefficients When a working configuration i...

Page 23: ...gate from being activated during speech Set a time in milliseconds between 0 and 500 Network Page Displays the Hostname Static IP Address Static subnet mask Gateway IP address and whether DHCP and Au...

Page 24: ...ress Enter the gateway IP address of your router The default gateway is 192 168 0 1 Dynamic Addressing Enable dynamic addressing to allow the unit to acquire it s IP address automatically from a DHCP...

Page 25: ...ng on this unit is V1 0 6 To find out if there is new firmware for this unit check the Sonifex website If an update is available download the latest version and save the file to your computer Browse y...

Page 26: ...16kHz THD N 0 01 8dBu 20Hz 8kHz unity gain 8kHz BW fs 24kHz THD N 0 01 8dBu 20Hz 12kHz unity gain 12kHz BW Noise 84dB RMS unity gain ref 8dBu output Frequency Response 20Hz 9 5kHz 0 0 5dB Rejection Ra...

Page 27: ...Notes...

Page 28: ...www sonifex co uk t 44 0 1933 650 700 f 44 0 1933 650 726 sales sonifex co uk...