Focal Press Loudspeaker Modelling and Design: A Practical Introduction

Table of Contents

I. INTRODUCTION

What tools do I need to design loudspeakers?

II. BASIC THEORY

1. How Does a Loudspeaker Work?

2. Frequency Response

3. Frequency versus Time

4. Resonance & Damping

5. Finite Element Analysis

6. Young�s Modulus

III. LOUDSPEAKER MODELS

7. Small Signal Model

8. Polynomial Models

9. Thiele-Small Parameters

10. Large Signal Domain and Model

IV. THE DESIGN PROCESS

11. There is a Job To Do - But exactly what?

12. Common Questions for Most Loudspeakers

13. Specifying a loudspeaker driver

14. Project Planning and a Bill of Materials

15. Designing a Subwoofer

V. WHAT�S REALLY GOING ON INSIDE A LOUDSPEAKER?

16. Driver Design

17. Magnet

18. Voice Coil

19. Bl(x)

20. Le(x)

21. Motor Unit

VI. FEA, BEM AND INTEGRATION

22. Material Specifications

23. Mechanical Finite Element Analysis or FEA

24. Cms(x)

25. Suspension

26. Mechanical Simulations

27. PafLS

28. Linkwitz Transform

VII. MECHANICAL DESIGN

29. Visual and Mechanical Design

30. Chassis

31. Cabinet

VIII. MEASURING A LOUDSPEAKER

32. Acoustical Measurements

33. A Universal Loudspeaker Driver Test System

34. Tetrahedral Test Chamber - White Paper

IX. APPENDICES

A. Glossary

B. References

C. ABEC and VACS Tutorial

D. FEMM Tutorial

E. Fusion 360 Tutorial

F. HOLMImpulse Tutorial

G. Klippel LPM Tutorial

H. Mecway Tutorial

I. Microcap Tutorial

J. Appendix PafLS

K. Appendix Theoretical Bl(x)

L. Statistical Analysis of Loudspeakers

M. WinISD

About the Author

Geoff Hill is a passionate engineer, active member of the Audio Engineering Society, and a consultant working with a wide range of companies in the UK, Europe, and Asia. His latest venture, Hill Acoustics, marks in many ways a return to his roots, combining his 40+ years of experience with a determination to make a difference and do things better.

Geoff can be contacted at www.geoff-hill.com or through his business www.hillacoustics.com.