Audio Engineering Society E-library

I try to avoid too much promotion in this blog, but in this case I think its justified. I’m involved in advancing a resource from a non-profit professional organisation, the Audio Engineering Society. They do lots and lots of different things, promoting the science, education and practice of all things audio engineering related. Among others, they’ve been publishing research in the area for almost 70 years, and institutions can get full access to all the content in a searchable library. In recent posts, I’ve written about some of the greatest papers ever published there, Part 1 and Part 2, and about one of my own contributions.

In an ideal world, this would all be Open Access . But publishing still costs money, so the AES support both gold Open Access (free to all, but authors pay Article Processing Charges) and the traditional model, where its free to publish but individuals or institutions subscribe or articles can be purchased individually. AES members get free access. I could write many blog articles just about Open Access (should I?)- its never as straightforward as it seems. At its best it is freely disseminating information for the benefit of all, but at its worst its like Pay to Play, a highly criticised practice for the music industry, and gives publishers an incentive to lower acceptance standards. But for now I’ll just point out that the AES does its absolute best to keep the costs down, regardless of publishing model, and the costs are generally much less than similar publishers.

Anyway, the AES realised that one of the most cost effective ways to get our content out to large communities is through institutional licenses or subscriptions. And we’re missing an opportunity here since we haven’t really promoted this option. And everybody benefits from it; wider dissemination of knowledge and research, more awareness of the AES, better access, etc. With this in mind, the AES issued the following press release, which I have copied verbatim. You can also find it as a tweet, blog entry or facebook post.

AES_ELibrary

AES E-Library Subscriptions Benefit Institutions and Organizations

— The Audio Engineering Society E-Library is the world’s largest collection of audio industry resources, and subscriptions provide access to extensive content for research, product development and education — 

New York, NY, March 22, 2018 — Does your research staff, faculty or students deserve access to the world’s most comprehensive collection of audio information? The continuously growing Audio Engineering Society (AES) E-Library contains over 16,000 fully searchable PDF files documenting the progression of audio research from 1953 to the present day. It includes every AES paper published from every AES convention and conference, as well as those published in the Journal of the Audio Engineering Society. From the phonograph to MP3s, from early concepts of digital audio through its fulfillment as the mainstay of audio production, distribution and reproduction, to leading-edge realization of spatial audio and audio for augmented and virtual reality, the E-Library provides a gateway to both the historical and the forward-looking foundational knowledge that sustains an entire industry.  

The AES E-Library has become the go-to online resource for anyone looking to gain instant access to the vast amount of information gathered by the Audio Engineering Society through research, presentations, interviews, conventions, section meetings and more. “Our academic and research staff, and PhD and undergraduate Tonmeister students, use the AES E-Library a lot,” says Dr. Tim Brookes, Senior Lecturer in Audio & Director of Research Institute of Sound Recording (IoSR) University of Surrey. “It’s an invaluable resource for our teaching, for independent student study and, of course, for our research.” 

“Researchers, academics and students benefit from E-Library access daily,” says Joshua Reiss, Chair of the AES Publications Policy Committee, “while many relevant institutions – academic, governmental or corporate – do not have an institutional license of the AES E-library, which means their staff or students are missing out on all the wonderful content there. We encourage all involved in audio research and investigation to inquire if their libraries have an E-Library subscription and, if not, suggest the library subscribe.” 

E-Library subscriptions can be obtained directly from the AES or through journal bundling services. A subscription allows a library’s users to download any document in the E-Library at no additional cost. 

“As an international audio company with over 25,000 employees world-wide, the AES E-library has been an incredibly valuable resource used by Harman audio researchers, engineers, patent lawyers and others,” says Dr. Sean Olive, Acoustic Research Fellow, Harman International. “It has paid for itself many times over.” 

The fee for an institutional online E-Library subscription is $1800 per year, which is significantly less than equivalent publisher licenses. 

To search the E-library, go to http://www.aes.org/e-lib/

To arrange for an institutional license, contact Lori Jackson directly at lori.jackson@aes.org, or go to http://www.aes.org/e-lib/subscribe/.

 

About the Audio Engineering Society
The Audio Engineering Society, celebrating its 70th anniversary in 2018, now counts over 12,000 members throughout the U.S., Latin America, Europe, Japan and the Far East. The organization serves as the pivotal force in the exchange and dissemination of technical information for the industry. Currently, its members are affiliated with 90 AES professional sections and more than 120 AES student sections around the world. Section activities include guest speakers, technical tours, demonstrations and social functions. Through local AES section events, members experience valuable opportunities for professional networking and personal growth. For additional information visit http://www.aes.org.

Join the conversation and keep up with the latest AES News and Events:
Twitter: #AESorg (AES Official) 
Facebook: http://facebook.com/AES.org

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You’re invited to my Inaugural Lecture as Professor of Audio Engineering

When writing a blog like this, there’s sometimes a thin line between information and promotion. I suppose this one is on the promotion-side, but its a big deal for me and for at least a few of you it will involve some interesting information.

Queen Mary University of London has Inaugural Lectures for all its professors. I was promoted to Professor last year and so its time for me to do mine. It will be an evening lecture at the University on April 17th, free for all and open to the public. Its quite an event, with a large crowd and a reception after the talk.

I’m going to try to tie together a lot of strands of my research (when I say ‘my’, I mean the great research done by my students, staff and collaborators). That won’t be too hard since there are some common themes throughout. But I’m also going to try to make it as fun and engaging as possible, lots of demonstrations, no dense formal PowerPoint, and a bit of theatre.

You can register online by going to https://www.eventbrite.co.uk/e/do-you-hear-what-i-hear-the-science-of-everyday-sounds-tickets-43749224107 and it has all the information about time, location and so on.

Here’s the full details.

Do you hear what I hear? The science of everyday sounds.

The Inaugural Lecture of Professor Josh Reiss, Professor of Audio Engineering

Tue 17 April 2018, 18:30 – 19:30 BST
ArtsTwo, Queen Mary Mile End Campus
327 Mile End Road, London, E1 4NS

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Details: The sounds around us shape our perception of the world. In films, games, music and virtual reality, we recreate those sounds or create unreal sounds to evoke emotions and capture the imagination. But there is a world of fascinating phenomena related to sound and perception that is not yet understood. If we can gain a deep understanding of how we perceive and respond to complex audio, we could not only interpret the produced content, but we could create new content of unprecedented quality and range.
This talk considers the possibilities opened up by such research. What are the limits of human hearing? Can we create a realistic virtual world without relying on recorded samples? If every sound in a major film or game soundtrack were computer-generated, could we reach a level of realism comparable to modern computer graphics? Could a robot replace the sound engineer? Investigating such questions leads to a deeper understanding of auditory perception, and has the potential to revolutionise sound design and music production. Research breakthroughs concerning such questions will be discussed, and cutting-edge technologies will be demonstrated.

Biography: Josh Reiss is a Professor of Audio Engineering with the Centre for Digital Music at Queen Mary University of London. He has published more than 200 scientific papers (including over 50 in premier journals and 4 best paper awards), and co-authored the textbook Audio Effects: Theory, Implementation and Application. His research has been featured in dozens of original articles and interviews since 2007, including Scientific American, New Scientist, Guardian, Forbes magazine, La Presse and on BBC Radio 4, BBC World Service, Channel 4, Radio Deutsche Welle, LBC and ITN, among others. He is a former Governor of the Audio Engineering Society (AES), chair of their Publications Policy Committee, and co-chair of the Technical Committee on High-resolution Audio. His Royal Academy of Engineering Enterprise Fellowship resulted in founding the high-tech spin-out company, LandR, which currently has over a million and a half subscribers and is valued at over £30M. He has investigated psychoacoustics, sound synthesis, multichannel signal processing, intelligent music production, and digital audio effects. His primary focus of research, which ties together many of the above topics, is on the use of state-of-the-art signal processing techniques for professional sound engineering. He maintains a popular blog, YouTube channel and twitter feed for scientific education and dissemination of research activities.

 

Greatest JAES papers of all time, Part 2

Last week I revealed Part 1 of the greatest ever papers published in the Journal of the Audio Engineering Society (JAES). JAES is the premier peer-reviewed journal devoted exclusively to audio technology, and the flagship publication of the AES. This week, its time for Part 2. There’s little rhyme or reason to how I divided up and selected the papers, other than I started by looking at the most highly cited ones according to Google Scholar. But all the papers listed here have had major impact on the science, education and practice of audio engineering and related fields.

All of the papers below are available from the Audio Engineering Society (AES) E-library, the world’s most comprehensive collection of audio information. It contains over 16,000 fully searchable PDF files documenting the progression of audio research from 1953 to the present day. It includes every AES paper published at a convention, conference or in the Journal. Members of the AES get free access to the E-library. To arrange for an institutional license, giving full access to all members of an institution, contact Lori Jackson Lori Jackson directly, or go to http://www.aes.org/e-lib/subscribe/ .

And without further ado, here are the rest of the Selected greatest JAES papers

More than any other work, this 1992 paper by Stanley Lipshitz and co-authors has resulted in the correct application of dither by music production. Its one possible reason that digital recording quality improved after the early years of the Compact Disc (though the loudness wars reversed that trend). As renowned mastering engineer Bob Katz put it, “if you want to get your digital audio done just right, then you should learn about dither,” and there is no better resource than this paper.

According to Wikipedia, this 1993 paper coined the term Auralization as an analogy to visualization for rendering audible (imaginary) sound fields. This general research area of understanding and rendering the sound field of acoustic spaces has resulted in several other highly influential papers. Berkhout’s 1988 A holographic approach to acoustic control (575 citations) described the appealingly named acoustic holography method for rendering sound fields. In 1999, the groundbreaking Creating interactive virtual acoustic environments (427 citations) took this further, laying out the theory and challenges of virtual acoustics rendering, and paving the way for highly realistic audio in today’s Virtual Reality systems.

The Schroeder reverberator was first described here, way back in 1962. It has become the basis for almost all algorithmic reverberation approaches. Manfred Schroeder was another great innovator in the audio engineering field. A long transcript of a fascinating interview is available here, and a short video interview below.

These two famous papers are the basis for the Thiele Small parameters. Thiele rigorously analysed and simulated the performance of loudspeakers in the first paper from 1971, and Small greatly extended the work in the second paper in 1972. Both had initially published the work in small Australian journals, but it didn’t get widely recognised until the JAES publications. These equations form the basis for much of loudspeaker design.

Check out;

or the dozens of youtube videos about choosing and designing loudspeakers which make use of these parameters.

This is the first English language publication to describe the Haas effect, named after the author. Also called the precedence effect, it investigated the phenomenon that when sending the same signal to two loudspeakers, a small delay between the speakers results in the sound appearing to come just from one speaker. Its now widely used in sound reinforcement systems, and in audio production to give a sense of depth or more realistic panning (the Haas trick).

Hass-effect

This is the first ever research paper published in JAES. Published in August 1949, it set a high standard for rigour, while at the same time emphasising that many publications will have strong relevance not just to researchers, but to audiophiles and practitioners as well.

It described a new instrument for frequency response measurement and display. People just love impulse response and transfer function measurements, and some of the most highly cited JAES papers are on this topic; 1983’s An efficient algorithm for measuring the impulse response using pseudorandom noise (308 citations), Transfer-function measurement with maximum-length sequences (771 citations), the 2001 paper from a Brazil-based team, Transfer-function measurement with sweeps (722 citations), and finally Comparison of different impulse response measurement techniques (276 citations) in 2002. With a direct link between theory and new applications, these papers on maximum length sequence approaches and sine sweeps were major advances over the alternatives, and changed the way such measurements are made.

And the winner is… Ville Pulkki’s Vector Base Amplitude Panning (VBAP) paper! This is the highest cited paper in JAES. Besides deriving the stereo panning law from basic geometry, it unveiled VBAP, an intuitive and now widely used spatial audio technique. Ten years later, Pulkki unveiled another groundbreaking spatial audio format, DirAC, in Spatial sound reproduction with directional audio coding (386 citations).

Greatest JAES papers of all time, Part 1

The Journal of the Audio Engineering Society (JAES) is the premier publication of the AES, and is the only peer-reviewed journal devoted exclusively to audio technology. The first issue was published in 1949, though volume 1 began in 1953. For the past 70 years, it has had major impact on the science, education and practice of audio engineering and related fields.

I was curious which were the most important JAES papers, so had a look at Google Scholar to see which had the most citations. This has lots of issues, not just because Scholar won’t find everything, but because a lot of the impact is in products and practice, which doesn’t usually lead to citing the papers. Nevertheless, I looked over the list, picked out some of the most interesting ones and following no rules except my own biases, selected the Greatest Papers of All Time Published in the Journal of the Audio Engineering Society. Not surprisingly, the list is much longer than a single blog entry, so this is just part 1.

All of the papers below are available from the Audio Engineering Society (AES) E-library, the world’s most comprehensive collection of audio information. It contains over 16,000 fully searchable PDF files documenting the progression of audio research from 1953 to the present day. It includes every AES paper published at a convention, conference or in the Journal. Members of the AES get free access to the E-library. To arrange for an institutional license, giving full access to all members of an institution, contact Lori Jackson Lori Jackson directly, or go to http://www.aes.org/e-lib/subscribe/ .

Selected greatest JAES papers

ambisonicsThis is the main ambisonics paper by one* of its originator, Michael Gerzon, and perhaps the first place the theory was described in detail (and very clearly too). Ambisonics is incredibly flexible and elegant. It is now used in a lot of games and has become the preferred audio format for virtual reality. Two other JAES ambisonics papers are also very highly cited. In 1985, Michael Gerzon’s Ambisonics in multichannel broadcasting and video (368 citations) described the high potential of ambisonics for broadcast audio, which is now reaching its potential due to the emergence of object-based audio production. And 2005 saw Mark Poletti’s Three-dimensional surround sound systems based on spherical harmonics (348 citations), which rigorously laid out and generalised all the mathematical theory of ambisonics.

*See the comment on this entry. Jerry Bauck correctly pointed out that Duane H. Cooper was the first to describe ambisonics in some form, and Michael Gerzon credited him for it too. Cooper’s work was also published in JAES. Thanks Jerry.

James Moorer

This isn’t one of the highest cited papers, but it still had huge impact, and James Moorer is a legend in the field of audio engineering (see his prescient ‘Audio in the New Millenium‘). The paper popularised the phase vocoder, now one of the most important building blocks of modern audio effects. Auto-tune, anyone?

Richard Heyser’s Time Delay Spectrometry technique allowed one to make high quality anechoic spectral measurements in the presence of a reverberant environment. It was ahead of its time since despite the efficiency and elegance, computing power was not up to employing the method. But by the 1980s, it was possible to perform complex on-site measurements of systems and spaces using Time Delay Spectrometry. The AES now organises Heyser Memorial Lectures in his honor.

hrtf

Together, these two papers by Henrik Møller et al completed transformed the world of binaural audio. The first paper described the first major dataset of detailed HRTFs, and how they vary from subject to subject. The second studied localization performance when subjects listened to a soundfield, the same soundfield using binaural recordings with their own HRTFs, and those soundfields using the HRTFs of others. It nailed down the state of the art and the challenges for future research.

The early MPEG audio standards. MPEG 1 unveiled the MP3, followed by the improved MPEG2 AAC. They changed the face of not just audio encoding, but completely revolutionised music consumption and the music industry.

John Chowning was a pioneer and visionary in computer music. This seminal work described FM synthesis, where the timbre of a simple waveform is changed by frequency modulating it with another frequency also in the audio range, resulting in a surprisingly rich control of audio spectra and their evolution in time. In 1971, Chowning also published The simulation of moving sound sources (278 citations), perhaps the first system (and using digital technology) for synthesising an evolving sound scene.

The famous Glasberg and Moore loudness model is perhaps the most widely used auditory model for loudness and masking estimation. Other aspects of it have appeared in other papers (including A model of loudness applicable to time-varying sounds, 487 citations, 2002).

More greatest papers in the next blog entry.