Aphex Systems 320A

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6.13 Hard Disk Recording

Transferring music to hard disk can be improved using a Model 320D. It is a known fact that

CD’s are mastered at varying average levels with some strikingly lower or higher in volume

level than others. When building a broadcast or webcast music library on a hard disk audio

server, it would be nice to have a way to even out those levels so the on-air segues will always

be smooth and fat. The Compellor can do that without adding artifacts across the whole inven-

tory of titles. Simply transfer each title through the Compellor’s digital I/O port. Alternatively,

if you cannot re-record an existing library, you can place a Model 320D at the output of the

audio server. It will automatically ride gain for you and serve up neatly packaged audio perfect

for the on-air mix and subsequent broadcast audio processing.

Contents

Main Compellor 320A Compellor Fast Finder Quick Start | 320A 1. Contents 1. Contents Page 2. Quick Start 3. Introduction 3. Introduction Page 4. Installation 320D 4. Installation Page 5. Specications Page 6. Operation Page 6. Operation Page 320A 7. System Description Page Page Page 7. System Description 8. Warranty & Service 9. Appendices Appendix A: Balanced and Unbalanced Lines and Operating Levels Appendix B Appendix B: Dealing With Grounds and Hum Page Appendix C Appendix C: Proper Wiring Techniques APPENDIX D: Standard Cable Wiring PART 1: BALANCED OUT to BALANCED IN 320A Compellor PART 2: BALANCED OUT to UNBALANCED IN Transformer Balanced Outputs Servo Balanced Outputs PART 3: UNBALANCED to UNBALANCED PART 4: UNBALANCED OUT to BALANCED IN Standard Method Standard Cable (Guitar Cord) Enhanced Method (Pseudo Balanced) Appendix E Appendix E: About Reference Levels Page DigitalvsAnalog; PeakvsRMS How To Deal With The Confusion Dueling Standards + VU dBFS DIN PPM dB Full Scale + VU Sine Wave Synth Peak Meters Very Different for Same Loudness Both Meters Show 0VU Digital Audios Contributions to the Problem Handling Codecs & Digital STLs (Studio-Transmitter Links)