Acoustics: Sound Fields and Transducers (Hardback)

by Leo L. Beranek, Tim Mellow
Format: Hardback 720 pages 
by Academic Press (ISBN: 0123914213)



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In celebration of Leo Beranek 100th birthday on 15th September 2014 and 60 years since Leo's original book 'ACOUSTICS' was first published. We are pleased to offer you copies of 'Acoustics: Sound Fields and Transducers' at a reduced price of £68.00 that are individually signed by Leo's co-author Tim J. Mellow who contributed much new material. Shipping with the UK is free, other areas at standard postal rates and books are despatched usually within 24 hours!

What the critics say about 'Acoustics: Sound Fields and Transducers'

“ 'Acoustics: Sound Fields and Transducers' is an update/sequel to the legendary 1954 work Acoustics by Leo Beranek. It contains more recent and additional material, including material that is difficult to find elsewhere. Some examples of the latter are a discussion of the “slip” boundary condition in narrow tubes (Chap. 4), cell phone acoustics (Chap. 8), and steps to produce satisfactory listening room acoustics (Chap. 11)…..In sum, this highly recommended book is a treasure of information and problem-solving techniques for both the novice and expert in the areas of acoustical transducers and fields.” Allan J. Zuckerwar, J. Acoust. Soc. Am. 134(3), September 2013.

“…..In the almost 60 years since Acoustics was published, it has become one of the most cited references in scholarly papers, and has found a place not only on the book shelf, but also open on the desks, of practitioners, educators, and students…..Mellow and Beranek have updated the classic text with additional focus on transducers while retaining many chapters from the 1954 edition. It also introduces techniques that were not even a dream in 1954 and so updates the text to the early 21st century…An expanded chapter on horn loudspeakers, including separate sub-sections for parabolic, conical, exponential, and hyperbolic profiles, closes out the section…..In Chapter 12, some practical electro-dynamic loudspeaker design topologies and geometries – including the spherical cap on a sphere, a piston in a sphere, and oscillating concave and convex domes in an infinite baffle – are discussed…..In addition to mathematical concepts such as the Huygens-Fresnel principle (too easily misinterpreted by many wishful wizards), Rayleigh integrals, Green’s functions and the Kirchhoff-Helmholtz boundary integral, the authors present useful examples in both cylindrical and rectangular-spherical geometries – including a rigid circular piston in an infinite and finite baffle, resilient disks (a.k.a. real world diaphragms), and a long oscillating strip. .….The text … is a most welcome update to the classic text. Acoustics: Sound Fields and Transducers will find its place open on the desk of many who deal with the radiation of sound from vibrating surfaces, including loudspeaker component and mechanical system designers.” Neil A. Shaw, Noise Control Engr. J. 61(2) March-April 2013.

“ 'Acoustic: Sound Fields and Transducers' is for advanced students and experts. It is both deeply theoretical and very comprehensive. It also has a broad scope and interestingly gets involved in the theoretical handling of practical issues, comparing predictions with real-life models. Here it shows it’s written by authors who work in the field. A fantastic book then, a reference work that any practicing engineer, including me, must have because it offers specialist theoretical models and mathematical analyses not available elsewhere.” Noel Keywood, Hi-Fi World, March 2013.

“…..The many plots of different responses for bass-reflex enclosures have been re-written in simpler, modern terms of filter responses, ‘alignments’ and Thiele-Small parameters…. Even to those already owning a copy of the 1954 edition, I would recommend acquiring a copy of the revision. It has sufficient new material and is a pleasure to read to justify that cost…..Personally, I feel that £73 (RRP) could hardly be better spent.” Bob Walker, Acoustics Bulletin January/February 2013.

“Designers will find numerous alignment tables, charts, graphs, formulas and worked examples in Chapter 7, for example the complete behaviour of a driven bass-reflex enclosure including the higher modes, a useful starting point though understandably not including structural behaviour…while inexpensive programs such as Mathematica may be deployed to calculate the extensive models supplied. It is a welcome surprise to see Leo Beranek’s Acoustics so exhaustively revised while we also have to thank co-author Tim Mellow for his deep commitment to the work.” Martin Colloms, Hi-Fi Critic, January 2013.

                                                                                                         [PDF] Errata - Acoustics: Sound Fields and Transducers

Published articles

The story behind Acoustics: Sound Fields and Transducers

If you ask any engineer or academic working in the field of electroacoustics which is their favourite text book, the reply will nearly always be ACOUSTICS by Leo Beranek.  Why is a book published in 1954 without revisions still so popular? There are many reasons: It deals mainly with fundamental principles which have not changed. It is well structured. The author’s passion for the subject is infectious – the opening sentence is “Acoustics is a most fascinating subject”. Wave propagation is explained pictorially before diving into mathematics. Electrical circuit analogies are used to provide insight into the operation of transducers. Formulas are given to help readers to work out their own designs. It is hardly surprising that ACOUSTICS has become one of the most cited books on the subject. My background was in electrical engineering, so naturally Leo’s circuit analogies sparked my interest in acoustics and his book was my bible for many years. I was always fascinated by..........

A novel 25 watt OTL tube amplifier

If you have spent $500 or more on 5m or so of exotic loudspeaker cable, have you ever wondered about the 500m of standard copper wire in the output transformers of your tube amplifier?  An alternative is the output trans-former-less (OTL) tube amplifier. However, this concept is not easy to realize in practice, otherwise there would be more of these around.........

Past papers published in Academic Journals

[PDF] Equations for virtual acoustic sources ©2014 Acoustical Society of America.
[PDF] On the sound fields of infinitely long strips ©2011 Acoustical Society of America.
[PDF] A dipole loudspeaker with a balanced directivity pattern ©2010 Acoustical Society of America.
[PDF] On the forces in single-ended and push-pull electret transducers ©2008 Acoustical Society of America.
[PDF] Comparison of spheroidal and Eigen function-expansion trial functions for a membrane in an infinite baffle ©2008 Acoustical Society of America.
[PDF] On the sound field of a resilient disk in free space ©2008 Acoustical Society of America.
[PDF] On the sound field of a shallow spherical shell in an infinite baffle ©2007 Acoustical Society of America.
[PDF] On the sound field of a resilient disk in an infinite baffle ©2006 Acoustical Society of America.
[PDF] On the sound field of a circular membrane in free space and an infinite baffle ©2006 Acoustical Society of America.
[PDF] On the sound field of an oscillating disk in a finite open and closed circular baffle ©2005 Acoustical Society of America. 

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