Newnes Audio and Hi-Fi Engineer's Pocket Book (eBook)

Front Cover 1
Newnes Audio and Hi-Fi Engineer's Pocket Book 2
Copyright Page 3
Table of Contents 4
Preface to the first edition 6
Preface to the second edition 7
Chapter 1. Sound and acoustics 8
Human hearing 8
Sound sources 12
Measuring sound 16
Typical sound power levels 18
Sound propagation 20
Room and hall acoustics 29
Sound insulation 33
Chapter 2. Microphones 38
Transducers 38
Acoustic characteristics 42
Special types of microphone 44
Boundary microphones 46
Microphones in the sound field 50
Microphone electrical parameters 52
Chapter 3. The gramophone 56
Studio techniques 56
The record groove 58
Disc manufacture 59
Reproducing styli 60
Stylus tracking 62
Pickup cartridges 64
Cartridge parameters 65
Pickup arms 66
Turntables 68
Turntable parameters 69
Chapter 4. Compact discs 70
Principles 70
Compact disc format 74
Disc data 74
The CD player 78
Three-beam system 78
Single-beam systems 81
Decoding the signal 83
Compact disc manufacture 86
Compact disc faults 87
Chapter 5. Tape recording 88
Magnetism 88
Magnetic recording 90
Bias 91
Record/playback heads 94
Noise reduction 96
Head circuits 100
Head materials 102
Erasing 103
Effect of oxide deposits 104
Head adjustments/maintenance 104
Tape transport 106
Motors and speed control 108
Hi-fi sound with video 110
Digital tape recording 111
Philips digital compact cassette 116
Recording tape 118
Tape manufacture 120
Minicassette manufacture 121
Tape parameters 122
Tape groups 123
Open-reel recorders 124
The compact cassette 124
Chapter 6. High-quality radio 126
Receiver principles 126
Stereo broadcasting 129
Stereo decoding 130
BBC stereo test transmissions 131
Interference 132
Alignment 133
F.m. tuner parameters 134
Chapter 7. Amplifiers 138
Thermionic valves 138
Audio transistors 140
Transistor characteristics 142
Basic transistor circuit features 143
Amplifier parameters 152
Chapter 8. Loudspeakers 154
The driver 154
Enclosures 160
Baffle/doublet 160
Infinite baffle 161
Reflex enclosure 164
The horn 166
Labyrinth/transmission line 167
Column/line source 168
Loudspeaker absorbents 169
Electrostatic speakers 170
Loudspeakers for electronic instruments 172
Unconventional speakers 176
Crossover networks 178
Chapter 9. Public address 180
Objectives 180
Loudspeaker distribution 181
Avoiding feedback 182
Delay lines 184
Use of delay lines 185
Ceiling speaker mounting 186
LISCA (line-source ceiling array) 187
The second line-source 188
Mixers 190
Induction loops 191
P.a. system problems 193
Chapter 10. Facts and formulae 195
Resistance and impedance 195
Q-factor 196
Attenuators and matching pads 197
Filters 199
Attenuation beyond cut-off drops to the levels below 200
Test equipment 201
Oscilloscope traces 203
Power circuits 205
Index 208