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Audio Electronics, 2nd Edition

Book Description

This book is a unique electronics text in that it focuses on the electronics of audio design and explores the principles and techniques that underly the successful design and usage of analog and digital equipment.


The second edition includes new material on the latest developments in the field: digital radio and television, Nicam 728, and the latest Dolby noise reduction systems.

John Linsley Hood is responsible for numerous amplifier designs that have led the way to better sound, and has also kept up a commentary on developments in audio in magazines such as The Gramophone, Electronics in Action and Electronics World.

Up-to-date material on the latest technological developments
John Hood is a well-known and respected commentator on this industry

Table of Contents

  1. Cover image
  2. Title page
  3. Table of Contents
  4. Copyright page
  5. Preface
  6. Chapter 1: Tape recording
    1. THE BASIC SYSTEM
    2. MAGNETIC TAPE
    3. THE RECORDING PROCESS
    4. CAUSES OF NON-UNIFORM FREQUENCY RESPONSE
    5. RECORD/REPLAY EQUALISATION
    6. HEAD DESIGN
    7. RECORDING TRACK DIMENSIONS
    8. HF BIAS
    9. THE TAPE TRANSPORT MECHANISM
    10. TRANSIENT PERFORMANCE
    11. TAPE NOISE
    12. ELECTRONIC CIRCUIT DESIGN
    13. REPLAY EQUALISATION
    14. BIAS OSCILLATOR CIRCUITS
    15. THE RECORD AMPLIFIER
    16. RECORDING LEVEL INDICATION
    17. TAPE DRIVE MOTOR SPEED CONTROL
    18. PROFESSIONAL RECORDING EQUIPMENT
    19. GENERAL DESCRIPTION
    20. MULTI-TRACK MACHINES
    21. DIGITAL RECORDING SYSTEMS
  7. Chapter 2: Tuners and radio receivers
    1. BACKGROUND
    2. BASIC REQUIREMENTS
    3. THE INFLUENCE OF THE IONOSPHERE
    4. WHY VHF TRANSMISSIONS?
    5. FM BROADCAST STANDARDS
    6. STEREO ENCODING/DECODING
    7. GE/ZENITH ‘PILOT TONE’ SYSTEM
    8. THE BBC PCM PROGRAMME DISTRIBUTION SYSTEM
    9. SUPPLEMENTARY BROADCAST SIGNALS
    10. ALTERNATIVE TRANSMISSION METHODS
    11. SSB BROADCASTING
    12. RADIO RECEIVER DESIGN
    13. Circuit Design
    14. NEW DEVELOPMENTS
    15. APPENDIX 2.1 BROADCAST SIGNAL CHARACTERISTICS
    16. APPENDIX 2.2 RADIO DATA SYSTEM (RDS)
  8. Chapter 3: Preamplifiers and input signals
    1. REQUIREMENTS
    2. SIGNAL VOLTAGE AND IMPEDANCE LEVELS
    3. GRAMOPHONE PICK-UP INPUTS
    4. INPUT CIRCUITRY
    5. MOVING COIL PU HEAD AMPLIFIER DESIGN
    6. CIRCUIT ARRANGEMENTS
    7. INPUT CONNECTIONS
    8. INPUT SWITCHING
  9. Chapter 4: Voltage amplifiers and controls
    1. PREAMPLIFIER STAGES
    2. LINEARITY
    3. NOISE LEVELS
    4. OUTPUT VOLTAGE CHARACTERISTICS
    5. VOLTAGE AMPLIFIER DESIGN
    6. CONSTANT-CURRENT SOURCES AND ‘CURRENT MIRRORS’
    7. PERFORMANCE STANDARDS
    8. AUDIBILITY OF DISTORTION
    9. GENERAL DESIGN CONSIDERATIONS
    10. CONTROLS
    11. POTENTIOMETER LAW
  10. Chapter 5: Power output stages
    1. VALVE AMPLIFIER DESIGNS
    2. EARLY TRANSISTOR CIRCUITS
    3. LISTENER FATIGUE AND CROSSOVER DISTORTION
    4. IMPROVED TRANSISTOR AMPLIFIER DESIGNS
    5. POWER MOSFETs
    6. OUTPUT TRANSISTOR PROTECTION
    7. POWER OUTPUT AND POWER DISSIPATION
    8. GENERAL DESIGN CONSIDERATIONS
    9. SLEW-RATE LIMITING AND TID
    10. ADVANCED AMPLIFIER DESIGNS
    11. ALTERNATIVE DESIGN APPROACHES
    12. CONTEMPORARY AMPLIFIER DESIGN PRACTICE
    13. SOUND QUALITY AND SPECIFICATIONS
    14. Conclusions
  11. Chapter 6: The compact disc and digital audio
    1. WHY USE DIGITAL TECHNIQUES?
    2. PROBLEMS WITH DIGITAL ENCODING
    3. THE RECORD-REPLAY SYSTEM
    4. THE REPLAY SYSTEM
  12. Chapter 7: Test instruments and measurements
    1. INSTRUMENT TYPES
    2. SIGNAL GENERATORS
    3. ALTERNATIVE WAVEFORM TYPES
    4. DISTORTION MEASUREMENT
    5. OSCILLOSCOPES
  13. Chapter 8: Loudspeaker crossover systems
    1. WHY NECESSARY?
    2. CONE DESIGN
    3. SOUNDWAVE DISPERSION
    4. CROSSOVER SYSTEM DESIGN
    5. CROSSOVER COMPONENT TYPES
    6. LS OUTPUT EQUALISATION
    7. ACTIVE CROSSOVER SYSTEMS
    8. ACTIVE FILTER DESIGN
    9. BI-WIRING AND TRI-WIRING
  14. Chapter 9: Power supplies
    1. THE IMPORTANCE OF THE POWER SUPPLY UNIT
    2. CIRCUIT LAYOUTS
    3. CIRCUIT PROBLEMS
    4. FULL-WAVE RECTIFIER SYSTEMS
    5. TRANSFORMER TYPES AND POWER RATINGS
    6. STABILISED PSU CIRCUITS
    7. COMMERCIAL POWER AMP. PSUs
    8. OUTPUT SOURCE IMPEDANCE AND NOISE
    9. TRANSFORMER NOISE AND STRAY MAGNETIC FIELDS
  15. Chapter 10: Noise reduction techniques
    1. BANDWIDTH LIMITATION
    2. PRE-EMPHASIS
    3. ‘NOISE MASKING’ AND ‘COMPANDING’
    4. ATTACK AND DECAY TIMES
    5. SIGNAL LEVEL LIMITING
    6. GRAMOPHONE RECORD ‘CLICK’ SUPPRESSION
    7. PROPRIETARY NOISE REDUCTION SYSTEMS
    8. DIGITAL SIGNAL PROCESSING AND NOISE REDUCTION
  16. Chapter 11: Digital audio broadcasting
    1. AM
    2. VHF FM
    3. DIGITAL RADIO AND TV: THE GROWTH OF COMPLEXITY
    4. PHASE SHIFT MODULATION SYSTEMS
    5. MULTIPLEX (MUX) SYSTEMS
    6. PERCEPTUAL CODING
    7. AVOIDANCE OF TIME DELAY DISTORTION
    8. DAB TRANSMITTER AND RECEIVER LAYOUTS
    9. THE NICAM-728 TV STEREO SOUND SYSTEM
    10. THE NICAM-728 AUDIO SIGNAL
    11. SOUND QUALITY
  17. Index