Loudspeaker Handbook

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Springer Science & Business Media, Sep 30, 2003 - Music - 417 pages
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The second edition of Loudspeaker Handbook follows the same general outlines as the highly successful first edition and has been augmented and updated in many areas of technology. Most notable are the developments in large-scale, programmable line arrays, distributed mode loudspeakers, and ultrasonic-based audio transduction. Additionally, the core chapters on low frequency systems, system concepts, and horn systems have been expanded to include both more analytical material and a richer array of examples.

Much of the success of the first edition has been due to its accessibility both to loudspeaker engineers and to lay technicians working in the field - a point of view the author maintains in the present work. A full understanding of the underlying technology requires a fairly rigorous engineering background through the second year of professional study. At the same time, the generous use of graphs, with their intuitive thrust, will be useful to all readers.

Loudspeaker Handbook, Second Edition continues to be appropriate for use in courses at the undergraduate senior level, for graduate students, and for professionals in audio and acoustical engineering.

 

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Contents

Electroacoustical Engineering Fundamentals The Dynamic Loudspeaker
xiii
12 A simple mechanical resonant system
1
13 Impedance and mobility analogies
2
14 Combining electrical and mechanical domains
3
15 Combining the mechanical and acoustical domains
5
16 Directional characteristics
11
17 Cone excursion power and pressure relationships in graphical form
16
Structural Details of Cone and Dome Drivers
19
Thermal Failure Modes of Loupspeakers
231
92 Estimating values of thermal resistance
235
93 Low frequency performance shifts
236
94 Techniques for heat removal
237
Recording Monitor Loudspeakers
243
102 The modern era
247
104 Modern conedome systems
248
105 Smaller monitor designs
254

22 The moving system
24
23 Variations on the cone driver
36
24 HF dome drivers
39
25 MF dome drivers
41
26 Distortion in cone and dome drivers
42
Principles of Magnetics
49
32 Details of the magnetic circuit
53
34 Temperature rise and demagnetization
55
36 Magnetic shielding
57
Low Frequency Systems and Enclosures
61
42 Sealed LF system analysis
64
43 Ported LF system analysis
71
44 Some useful alignments
74
45 Port turbulence under high drive conditions
80
46 The passive radiator
82
48 Dipole LF systems
85
49 Multichamber LF bandpass systems
87
410 The acoustic lever
90
411 Transducers in acoustical series and in parallel
91
412 Slot loading ofLF drivers
93
413 Subwoofers
95
414 Directional properties of dual LF drivers mounted vertically
97
415 Alignment shifts
99
Dividing Networks and Systems Concepts
103
52 Upper useful frequency limits for drivers
110
53 Some notes on network component quality
111
54 Stock networks and autotransformers
112
55 Case studies
113
56 Offaxis lobing effects
118
57 Baffle component layout and edge details
121
58 Time domain response of loudspeakers
126
59 Loudspeaker dispersion and power response
127
Inline Planar Loudspeakers and Arrays
131
61 Analysis of the constant charge ESL
133
62 Electromagnetic planar loudspeakers
138
63 Discrete line arrays
142
64 Largescale arrays for sound reinforcement
149
65 Programmable arrays
155
Horn Systems
159
72 The driving transducer
163
73 Analysis of compression drivers
171
74 The plane wave tube PWT
177
75 Secondary resonances in the compression driver
180
76 Ring radiators and UHF drivers
181
78 Impedance measurements on horns
197
79 Distortion in horn systems
198
710 Horn driver protection
201
711 Lower midrange and LF horn drivers
203
713 Horn arrays
208
The Electronic Interface
213
82 Line losses
216
83 Matching loudspeakers and amplifiers
220
84 Amplifier bridging
221
85 Multiamplifying
224
86 Electronic control of loudspeaker system dynamic performance
225
107 The monitoring environment
256
108 The home project studio
259
Loudspeakers in Speech and Music Reinforcement
265
112 The role of signal delay
267
113 Cose studies
269
114 Computer simulation of loudspeaker coverage
274
115 System equalization
277
117 Electronic halls
282
118 Environmental effects on sound propagation
287
1110 System stability
291
Multichannel Systems for Film Videom and Music
295
122 Evolution of theater architecture and acoustics
301
123 A professional theater
302
124 Theater audio chain calibration
304
125 Power bandwidth of audio formats for film
307
126 Current stateoftheart in theater loudspeakers
308
127 Multichannel video in the home
310
128 Overview of music in surround sound
314
129 Holographic techniques in surround sound reproduction
316
1210 Positioning sound sources via reflections and focusing
318
Loudspeaker Measurements and Modeling
323
132 Distortion measurements
326
133 Phase and group delay response of loudspeakers
329
134 Measurement of directional data
331
135 The measuring environment
332
136 Ground plane measurements
338
138 An overview of transform measurement methods
341
139 Optical measurement techniques
345
1310 Modeling techniques
349
Loudspeaker Specifications for Professional Applications
353
142 Impedance
354
143 Reference sensitivity ratings
355
144 Power ratings of drivers and systems
358
145 Power dynamic compression
359
146 Distortion
361
148 ThieleSmallparameters
362
149 Powered loudspeaker systems
363
Stereo and the Listening Environment
365
152 Room modes
366
153 Room treatments at mid and high frequencies
370
154 Optimizing stereophonic localization
373
155 Loudspeaker arrangements for extended stereo imaging
374
156 Stereo performance from a single unit
377
A Survey of Unusual Transducers
383
161 Variations on a magnetic theme
384
162 Piezoelectric and related devices
394
163 Ionized air devices
396
164 The air modulator
399
165 Rotary actuators
401
166 Digital loudspeakers
402
167 Distributed mode loudspeakers DML
403
168 Overview of ultrasonic systems
406
Index
411
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About the author (2003)

John Eargle holds the position of Senior Director of Product Development and Application for JBL Professional