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Introduction To Electroacoustics and Audio Amplifier Design

Author(s): Jr., W. Marshall Leach

Edition: 4

Copyright: 2010

Pages: 312

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Table of Contents

1 Basic Principles of Sound
1.1 Sound
1.2 Sources of Sound.
1.3 Velocity of Sound
1.4 Frequency of Sound.
1.5 Pitch
1.6 Human Speech
1.7 Frequency Bands
1.8 Audio Sub Bands
1.9 Sound Pressure Level.
1.10 Equal Loudness Contours.
1.11 Loudness Levels
1.12 Audio Test Signals
1.13 Problems

2 Fundamentals of Acoustics
2.1 Basic Equations of Acoustics
2.2 The Acoustic Wave Equation.
2.3 The Plane Wave
2.4 Specific Impedance.
2.5 Acoustic Energy
2.6 Acoustic Intensity.
2.7 Wavelength
2.8 Particle Displacement.
2.9 The Omni-Directional Spherical Wave
2.10 Volume Velocity
2.11 The Simple Spherical Source.
2.12 Acoustic Images.
2.13 The Plane Circular Piston.
2.14 The Pattern Beamwidth
2.15 Fresnel Diffraction Effects.
2.16 Acoustic Reflections
2.17 Problems

3 Analogous Circuits of Acoustical Systems3.1 AcousticSources
3.2 Acoustic Impedance.
3.3 The Plane Wave Tube.
3.4 Acoustic Resistance.
3.5 Acoustic Compliance.
3.6 Acoustic Mass.
3.7 Acoustic Impedance on a Piston in a Baffie.
3.8 Acoustic Impedance on a Piston in a Tube.
3.9 Radiation Impedance on a Piston in Free Air
3.10 Problems

4 Analogous Circuits of Mechanical Systerns4.1 Mechanical Sources.
4.2 Mass, Compliance, and Resistance.
4.3 Mechanical Systems
4.4 Moving-Coil Transducer
4.5 Crystal Transducer
4.6 Condenser Transducer
4.7 Mechano-Acoustic Transducer
4.8 Problems.

5 Microphones
5.1 Classifications
5.2 Modeling Diaphragm Reflections
5.3 Diaphragm Back Acoustical Load
5.4 Diaphragm Mechanical Parameters.
5.5 Condenser Microphone.
5.6 Condenser Microphone SPICE Simulation.
5.7 Condenser Microphone Buffer Amplifiers.
5.8 Dynamic Microphone.
5.9 Ribbon Microphone.
5.10 Proximity Effect
5.11 Combination Microphone.
5.12 Problems

6 Moving-Coil Loudspeakers
6.1 Construction
6.2 Analogous Circuits.
6.3 Combination Analogous Circuit.
6.4 Infinite Baffie Analogous Circuit.
6.5 Low-Frequency Solution for UD
6.6 Low-Frequency Bode Plots for UD
6.7 Small-Signal Parameters.
6.8 High-Frequency Solution for U D
6.9 On-Axis Pressure
6.10 Pressure Transfer Function.
6.11 Bode Plots of On-Axis Pressure.
6.12 Filter Theory Description of G (s)
6.13 Cutoff Frequencies.
6.14 Effect of Non-Zero Generator Resistance.
6.15 Frequency of Peak Response.
6.16 Voice-Coil Impedance
6.17 The Lossy Voice-Coil Inductance
6.18 On-Axis Pressure Sensitivity.
6.19 Acoustic Power Response
6.20 Reference Efficiency.
6.21 Diaphragm Displacement Function.
6.22 Voice-Coil Electrical Power Rating. 
6.23 Displacement Limited Power Rating.
6.24 SPICE Models
6.25 Problems

7 Closed-Box Loudspeaker Systems7.1 ModelingtheBox
7.2 The Analogous Circuits.
7.3 The Volume Velocity Transfer Function.
7.4 The On-Axis Pressure Transfer Function.
7.5 Effect of the Box on the System Response.
7.6 Sensitivity of the Lower Cutoff Frequency.
7.7 System Design with a Given Driver.
7.8 System Verification.
7.9 System Design From Specifications. .
7.10 A SPICE Simulation Example.
7.11 Problems

8 Vented-Box Loudspeaker Systems8.1 Modeling the Enclosure.
8.2 Effect of theVent
8.3 The On-Axis Pressure Transfer Function.
8.4 Voice-Coil Impedance Function.
8.5 The Magnitude-Squared Function.
8.6 The B4 Alignment
8.7 The QB3 Alignments.
8.8 The Chebyshev Alignments.
8.9 Example Pressure Responses.
8.10 Design with a Given Driver.
8.11 System Verification

Jr., W. Marshall Leach

Related ISBN's: 9781465215703, 9780757572869

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ISBN 9781465215703

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