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Back-to-basics audio

Author: Julian Nathan
Publisher: Boston ; Oxford [England] : Newnes, ©1998.
Edition/Format:   Print book : EnglishView all editions and formats
Summary:
Back-to-Basics Audio is a thorough yet approachable handbook on audio theory, practice, and allied electrical systems. Electrical principles are first discussed in elementary terms as a basis for understanding audio components and equipment, covered in a hands-on style in the rest of the book. The publication is a bridge between engineers, salespeople, and technicians. Finally, elements of home theater audio and  Read more...
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Additional Physical Format: Online version:
Nathan, Julian.
Back-to-basics audio.
Boston ; Oxford [England] : Newnes, ©1998
(OCoLC)606997606
Material Type: Internet resource
Document Type: Book, Internet Resource
All Authors / Contributors: Julian Nathan
ISBN: 0750699671 9780750699679
OCLC Number: 40361752
Notes: Includes index.
Description: xiii, 344 pages : illustrations ; 24 cm
Contents: Chapter 1 Electrical Principles 1 --
Audio's Three Parts 1 --
Electronics and Electricity 1 --
An Electrical Circuit 2 --
Electrical Principles 3 --
Ohm's Law 4 --
Using Ohm's Law 4 --
Voltage Drop 5 --
Introduction to Measurements 6 --
Inductance, Capacitance, and Impedance 7 --
Resonance 8 --
Line Impedance 9 --
Magnetism and Speaker Drivers 10 --
Speakers and Electric Motors 11 --
The Inverse Square Law and Speaker Design 12 --
Bi-Polarity 13 --
Direct and Alternating Current 13 --
Graphical Representation of Waveforms 14 --
Chapter 2 Meters and Electrical Measurements 17 --
Multimeters 17 --
Voltage Measurement 18 --
Current Measurement 19 --
A Word of Warning about Meter Current Ranges 21 --
Resistance Measurement 21 --
Using Analog and Digital Multimeters 22 --
Accuracy of a Meter 22 --
Meter Sensitivity 25 --
Additional Features Available in Multimeters 26 --
Oscilloscopes 26 --
Oscilloscope Experiments 28 --
Chapter 3 Amplifiers and Transmission Lines 29 --
Power Amplifier Lines and Loads 29 --
The Input Circuit 30 --
The Output Circuit 31 --
Avoidable Failures 32 --
Speaker Impedance Matching 33 --
Constant Voltage Lines 34 --
RMS Voltage and Current 36 --
Power 38 --
Amplifier Output Power Measurement 39 --
DC Offset Voltage 41 --
Catastrophic Failures 43 --
Dummy Loads 44 --
Cascading Power Amplifiers 45 --
Line Amplifiers 46 --
Voltage Amplifiers 47 --
Audio Lines 48 --
Coaxial Transmission Lines 49 --
Hearing-Aid Induction Loops 50 --
DC Coupled Amplifiers 51 --
Chapter 4 Sound Waves and Decibels 53 --
The Audio and Electromagnetic Spectra 53 --
The 630 Hz Tool 54 --
Frequency and Wavelength 57 --
Propagation 57 --
Audio Measurements 58 --
Noise and Distortion Thresholds 60 --
Decibels and Power 63 --
Decibels Further Explained 65 --
Case Histories 68 --
Shutting the door after the horse has bolted 68 --
Hazards of arbitrarily adding an insert point 69 --
Chapter 5 Transfer Characteristic and Networks 75 --
Transfer Characteristic and Distortion 75 --
Electro-Mechanical and Acoustic Transfer 80 --
Preparing for Unavoidable Transfer Errors 81 --
Networks 81 --
Attenuators 83 --
Variable Attenuators 84 --
Loss Pads 85 --
Filters and Equalizers 86 --
Resistances in Series and Parallel 92 --
When to Use a Fixed Equalizer 92 --
Cautions Regarding Equalizer Use 93 --
Recovery Amplifiers 94 --
Active Crossovers and Speaker Processors 95 --
Chapter 6 Speakers 99 --
Speaker Power Ratings 99 --
Estimating the Power to a Speaker 101 --
IEC Speaker Power Rating 101 --
Directional Properties and Stereo Image 102 --
Stereo Surround 103 --
Poor Man's Surround 104 --
Using Speaker Directional Properties 105 --
Frequency Response of Speakers 108 --
Response Limits of Speakers 109 --
Standing Waves 111 --
Efficient Bass Speaker Placement 111 --
Speaker Baffles 112 --
Bass Box Design 113 --
Intermodulation Distortion 115 --
Phase Response of Speakers 116 --
Speaker and Driver Phasing 116 --
Speaker Efficiency 118 --
Theater Speaker Evolution 119 --
Importance of Theater Speaker Dispersion Angle 121 --
Recent Developments 122 --
Cinema High-Frequency Roll-Off 123 --
Auditorium Response Limitations 125 --
Monitor Speakers 126 --
Limited Monitors 127 --
Auditorium and Monitor Calibration 127 --
Speaker Response Measurements 132 --
Auditorium and Monitor Levels 134 --
Why Do Commercials Sound Louder? 135 --
Headphones 136 --
Chapter 7 Tape Recorders and Monitor Selectors 137 --
Magnetic Recorders 138 --
Recorder Features and Types 141 --
Simplifying Complicated Concepts 142 --
General Purpose Monitor Selectors 144 --
Introduction to Studio Monitor Selectors 148 --
Monitor Selectors for Studio Mixers 149 --
Drop-Edits and Insert Recorders 151 --
Zero Level and Line Level 152 --
Recorder Line-Up Tone 153 --
Tape Recorder Alignment 153 --
Chapter 8 Mixers 157 --
Introduction to Mixers 157 --
The Difference between Speech and Dialog 160 --
Dialog Processing 161 --
Dialog Equalizer/Compressor Combination 163 --
Where Not to Use Dialog Processing 166 --
Background Suppression 167 --
Bandpass Filters 168 --
Dip Filters 172 --
Points to Consider when Mixing 172 --
The Effects Channels 173 --
Digital Sound Processing and Equipment 175 --
Unlocking the Noise Gate 176 --
Chapter 9 Acoustics 179 --
Rooms and Acoustics 179 --
Reverberation and the Absorption Spectrum 179 --
Sound Isolation and Acoustics 180 --
Equalizing the Absorption Frequency Response 181 --
Acoustic Control by Diffusers and Resonators 181 --
Sound Isolation Construction 186 --
Overcoming Building Noises 190 --
Planning and Supervising a Building Project 193 --
Silencing a Generator 194 --
Chapter 10 Audio Cabling 197 --
Balanced and Unbalanced Lines 197 --
Short Run Audio Wiring 200 --
Long Balanced and Unbalanced Lines 200 --
Reducing Noise Interference at Source 204 --
Safety 205 --
Connections to Various Types of Equipment 206 --
Cable Segregation and Rack Termination 208 --
There-and-Back Cable Termination 208 --
Pre-Measured Cable Runs and Junction Boxes 210 --
Prefabricated Cable Looms 210 --
Keeping RF Out of Systems and Cables 211 --
Chapter 11 Transformers and Power Supplies 215 --
Transformers 215 --
Auto-Transformers 220 --
Making Auto-Transformers to Order 221 --
Transformer Frequency Response 221 --
The Electricity Supply Mains 222 --
Rectifiers and Power Supplies 223 --
Regulators 226 --
Voltage and Current Regulation 227 --
Zener Diodes 228 --
Regulator Noise 228 --
Switch-Mode Power Supplies 229 --
Three Dollar Tester 229 --
Power Supply Faults 230 --
Batteries and Chargers 231 --
Lead-Acid Batteries 232 --
Precautions with Acid Batteries 233 --
Nickel-Cadmium Batteries 234 --
Choice of Battery 235 --
Chapter 12 Control Systems 237 --
Basic Control Groups 237 --
Relays 238 --
Relay Timer Circuits 241 --
Motor Reversing 242 --
Solid State Control Devises 243 --
Relays Versus Electronic Control 245 --
Chapter 13 Solder and Assembly Methods 247 --
Soldering 247 --
Tools 247 --
Soldering Techniques 248 --
Using Additional Flux 252 --
Troubleshooting, Inspection, and Re-Soldering 253 --
When Not to Re-Solder 254 --
Choosing and Fitting Connectors 254 --
Solderless and Crimp Connectors 257 --
Wire Wrap 258 --
Chapter 14 Installation Planning 259 --
Diagrams 259 --
How Far to Go with Drawing Detail 264 --
Drawing a System Block Diagram 264 --
Patchbay Layout and Wiring 268 --
Racks and Panels 270 --
Examples of Standard and Special Racks 276 --
Communicating Ideas 276 --
Front Opening Racks 282 --
Panel Design 282 --
Control Grouping 284 --
Laying Out a Panel 287 --
Lettering, Styling, and Engraving 287 --
Scales for Potentiometers and Switches 288 --
Before Starting Work on a Panel 289 --
Materials and Panel Thickness 290 --
Panels for Membrane Switches 291 --
Brackets and Shelf Units for Mobile Equipment 292 --
Drilling Precision Holes in Metal and Plastic 294 --
Chapter 15 Home Theater Sound 297 --
Real Theater Sound at Home 299 --
Surround Speaker Position 300 --
Equalizing the Center Channel 301 --
Case History 302 --
Bass and treble OK, but sound is bad 302 --
Adding a Sub-Bass 304 --
Bass Distortion and Power Loss 306 --
Maintaining Program Dynamic Range 307 --
Appendix A Working with Formulae --
Practical Examples of Common Calculations 309 --
Calculating Voltage Drop Resistance 309 --
Calculating Amplifier Output Power 310 --
Calculating LED Resistor Values 310 --
Calculating AC Transformer Secondary Voltage for a Given DC Rectifier Output 311 --
Appendix B Diagram Symbols 313 --
Appendix C A Mechanical Design Exercise 321 --
Making a High Gain Video Projection Screen 321 --
Consequential Design Steps 324 --
Appendix D Estimating Power to Speakers 327 --
How Much Power is Going to the Speakers? 328 --
Field Assessment of Power to a Speaker 328.
Responsibility: Julain Nathan.
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Abstract:

Dealing with audio electronics theory and equipment, this book discusses electrical and audio principles. It also addresses planning and installation of a home audio system. It also covers system  Read more...

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