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dbx Pro 386 user manual Appendix D, D.2 Truncation, D.1 Noise-Shaping Algorithms, User Manual

Models: 386

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386	Appendix	Appendix D

	D.1 Noise-Shaping Algorithms

D.1

16-Bit TPDF dither. (a) Shape “off”, (b) with shape set to “S1”, (c) with shape set to “S2.” Parameters: Input -60dBFS, 1

kHz; FFT Length= 2048, Sample Rate= 48 Khz, Averages= 32; Graph Steps= 1024.

D.2 Truncation

D.2

(a)24-Bit word, (b) 16-Bit truncated output, no dither. Parameters: Input -60dBFS, 1 kHz; FFT Length= 2048, Sample Rate= 48 Khz, Averages= 32; Graph Steps= 1024.

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dbx Pro 386 user manual Appendix D, D.2 Truncation, D.1 Noise-Shaping Algorithms, User Manual

Contents

Dual Vacuum Tube Preampw/Digital Out User ManualSAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONSWIRE COLOR CLEAN ONLY WITH A DAMP CLOTHELECTROMAGNETIC COMPATIBILITY LITHIUM BATTERYU.K. MAINS PLUG WARNING ADVARSELTable of Contents 386 User Manual Table of ContentsIntroduction Section 1 - Getting StartedINTRODUCTION 386 DEFINEDWARRANTY INFO CUSTOMER SERVICE INFO0.1 Defining the IntroductionSelectable mic/line switch 48 volt phantom power 20 dB pad 75 Hz low cut filter Phase reverse0.3 Warranty 0.2 Service Contact InfoIf you require technical support, contact dbx Customer Service. Be prepared to accurately describe the problem. Know the serial number of your unit - this is printed on a sticker attached to the rear panel. If you have not already taken the time to fill out your warranty registration card and send it in, please do so now IntroductionInstall the 386 in your rack with the provided rack screws. It is essential that when the 386 is being mounted in a rack mounting enclosure, the unit should be positioned with enough room at least one centimeter at the top and one centimeter at the bottom of the unit to allow prop- er ventilation. The 386 should not be mounted above or below anything that generates exces- sive heat. Ambient temperatures should not exceed 1130F 450C when equipment is in use. Although the unit is shielded against radio frequency and electromagnetic interference, extreme- ly high fields of RF and EMI should be avoided where possible 0.4 Installation RecommendationsIntroduction 386 User ManualGetting SectionStarted Getting StartedIEC Power Cord Receptacle Power SwitchAES/EBU Digital Connector S/PDIF Digital Connector+48 Volt Switch Line Select Switch20db Pad Switch Phase SwitchDither Switch Meter Select SwitchShape Switch Sample Rate SwitchANALOG APPLICATIONS APPLICATIONSANALOG Section2.1 Basic Analog Connection of the Analog Applications2.2 Connection to a Mixing Console SectionSection 2.3 Direct Connection to a RecorderAnalog Applications 1. Make microphone connections, being careful to keep the DRIVE control in the minimum +30 dB positionPage DIGITAL DIGITAL APPLICATIONSSection APPLICATIONS3.2 Digital Output Rear Panel Connections Digital Applications 3.1 Digital Output Front Functions of theDither Switch Shape Switch3.3 Sync Input Sample Rate Selection Digital ApplicationsAES/EBU Digital Connector S/PDIF Digital Connector3.4 Direct Connection to a DAW CPU Front Panel Digital Output FeaturesRear Panel Connections SectionDirect Connection to a Digital Mixer SectionFront Panel Digital Output Features Digital ApplicationsFront Panel Digital Output Features Digital Applications 3.6 A/D ConversionSection Rear Panel ConnectionsFront Panel Digital Output Features Multi-Tracking to DigitalSection Digital ApplicationsFront Panel Digital Output Features Digital Applications 3.8 Analog and Digital Output ApplicationSection Rear Panel ConnectionsSpecifications APPENDIXSync Input Info Block Diagram APPENDIXSync Input Info Appendix ASync Input Info 386 User ManualBlock Diagram Diagram Appendix BBlock 386 User Manualdbx Type IV Conversion System White Paper Appendix CType IV White Paper by Roger JohnsonAppendix C Type IV White Paper386 User Manual Appendix C Type IV White Paper386 User Manual Figure 3b - Signal of Fig. 3a Going Beyond the A/D Clip Level Figure 3a - Signal Having Low and High Frequency ContentAppendix C Type IV White PaperA/D Clip Level Low-Frequency Content High-Frequency Information Completely Lost High-Frequency ContentAppendix C Type IV White PaperAppendix Appendix DD.2 Truncation D.1 Noise-Shaping AlgorithmsD.3 Specifications Appendix DAppendix or visit our World Wide Web home page at Questions or comments? Email us at customer@dbxpro.comA Harman International Company 8760 South Sandy Pkwy Sandy, Utah Phone 801 Fax 801 Int’l Fax 603