EAW UX8800 owner manual Appendix, Greybox Information, System Processor Mode Processing

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APPENDIX

A Greybox Information

PURPOSE FOR GREYBOX FILES

In Loudspeaker Processor mode, the UX8800 allows loading files with factory-determined processing for specific loudspeaker models and arrays. This processing includes equalization, crossovers, high and/or low pass filtering, signal delay, and level control. In addition, files with Gunness Focusing also include proprietary processing invented by EAWspecifically for correction of inherent loudspeaker anomalies.

Often, audio system designers, technicians, or end-users attempt to create loudspeaker processing from scratch using one of the several, excellent measurement systems publicly available. However, the systems and methods cannot duplicate what is involved for EAWengineers to create Greybox processor settings:

•Loudspeaker data far greater in quantity, types, precision, and accuracy (especially polar data).

•Use of proprietary analysis tools developed specifically for loudspeaker data.

•Use of proprietary Gunness Focusing algorithms for the processing.

•Extensive listening tests performed by a wider range of people over a much greater time period and under a much greater range of conditions.

•Controlled, laboratory conditions.

•Extensive knowledge in the application of loudspeaker data analysis and signal processing.

B System Processor Mode Processing

In System Processor mode, the UX8800 may appear similar to other digital signal processors. However, the processing algorithms used in the UX8800 differ from the normal, “textbook” algorithms used in digital processors. EAWdeveloped new algorithms specifically tailored for digital audio processor hardware.

FILTER RESPONSE EXAMPLE

The accuracy and precision of the UX8800 filter responses can be compared to those using textbook algorithms. When applied to audio processing hardware, the latter do not provide textbook responses. The two graphs compare the results of EAW’s processing algorithms and standard “textbook” algorithms as used in well-accepted, digital signal processors. The frequency responses and phase response are for the UX8800 (lower curves) and a non-EAW processor (upper curves). The settings were two filters set for a 5 dB boost, 1 octave bandwidth (Q = 1), at frequencies of 1 kHz and 15 kHz. There are several things to note:

1.The upper curve is the upper curve becasuse its filter skirts extend somewhat beyond that of an ideal filter. In this case, the lower -3 dB point for the 1 kHz filter is actually over an octave below the filter frequency. The EAW response follows the response of an ideal filter.

2.The shapes of both the 1 kHz and 15 kHz filter frequency and phase responses are different for the non-EAW processor. In contrast, the frequency and phase response shapes of the two EAW filters are quite similar. When overlayed, they prove to be virtually identical.

3.Because of the difference in two non-EAW filter shapes, the response of the filters overlaps too much, resulting in an excessive boost in the 5 kHz to 10 kHz region.

Frequency Responses

Phase Responses

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Contents 8 8 0 Page Important Safety Instructions Read this First Impor tant Safety Instructions for Electronic ProductsConsignes DE Sécurité À Lire EN Premier Precauzioni DI Sicurezza DA Leggere PER Primo Page Precauciones DE Seuridad LEA Esto Primero Aviso Importante de Seguridad para Electrónico ProductosSicherheitshinweise Zuerst Lesen Wichtige Sicherheitsanweisungen für Elektronische ProduktePage EC Declaration of Conformity FCC Information to the UserN T E N T S Unpacking O n t e n t sShipping Damag e Returning a Processor to EAWFeatures and Benefits IntroductionUX8800 Description Networking CapabilitiesFront Panel Rear PanelUX8800 Installation Physical InstallationAC Mains Connections Audio Connections Network ConnectionsConnecting ONE Processor to ONE Computer Connecting ONE Computer to Multiple Processors Using U-NETConnecting ONE Processor to AN Ethernet Network Connecting Multiple Processors to AN Ethernet Network Operation Initial Setup Power On /OffFront Panel Controls Util System Set Up Humidity Program Load OperationLCD Contrast Unit of MeasurementOperation System Processor Mode E V E L Over Output Channels 1 toLIM Output Channels 1 to 0 P R O G 1 D E L AYOperation Loudspeaker Processor Mode Select Loudspeaker Processor ModeGreybox Processing Generic ProcessingType NET Output MAX VoltageLevel Input Channels a to D Over Input Channels a to DListener Distance and AIR Loss PRE-EMPHASIS HPF Freq and LPF FreqDelay Input Channels a to D EQ Input Channels a to DProg LED Indicators Net IndicatorsInput meters Output MetersEawpilot Extra CapabilitiesMaintenance and Service Return and Repair IssuesHow To Contact EAW A i n t e n a n c eTroubleshooting Symptom Probable Cause Corrective ActionUX8800 Block Diagram Loudspeaker ProcessorMode System Processor Mode Processing AppendixGreybox Information Purpose for Greybox FilesPage Page Page One Main Street, Whitinsville, MA USA 01588 508-342-6158 FAX

UX8800 specifications

The EAW UX8800 is a powerful digital signal processor designed for professional audio applications, particularly in live sound reinforcement and installations. Known for its remarkable flexibility and advanced features, the UX8800 serves as a vital tool for sound engineers seeking to achieve optimal audio performance.

One of the standout characteristics of the UX8800 is its extensive I/O capabilities. The unit offers up to 8 input and 8 output channels, which can be configured in various ways to accommodate different audio routing needs. This versatility makes it ideal for a range of applications, from concert touring to fixed installations in theaters and large venues.

The UX8800 employs advanced digital signal processing technologies that allow for intricate control of audio signals. It includes powerful algorithms for equalization, dynamic processing, delays, and crossover functions. This enables engineers to tailor the sound precisely to the acoustics of the venue, ensuring that every nuance of the audio is accurately reproduced.

One of the key features of the UX8800 is its user-friendly interface. Equipped with an intuitive PC-based control software, users can access and adjust settings through a visual representation of their audio system. This graphical interface simplifies the process of setting up and adjusting parameters, making it easier for sound technicians to make real-time changes during performances.

Additionally, the UX8800 provides a variety of connectivity options, including digital connectivity through AES/EBU, as well as analog connections. This ensures compatibility with a wide range of audio sources and systems, allowing for seamless integration into existing setups.

The device also supports advanced networking capabilities, enabling multiple units to be linked together for larger systems. This feature is particularly useful in larger venues where synchronization between multiple processors is essential for achieving cohesive sound.

With its robust construction and reliability, the EAW UX8800 is engineered to withstand the rigors of professional use. It is designed to operate efficiently in challenging environments, ensuring consistent performance night after night.

In conclusion, the EAW UX8800 is a premier choice for audio professionals seeking a powerful, flexible, and reliable digital signal processor. Its array of features, cutting-edge technologies, and intuitive interface make it an essential tool for anyone serious about achieving top-notch audio quality in any setting.
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