četvrtak, 28. lipnja 2012.

Barry Blesser - Zvukovna arhitektura






Kako slušanjem prepoznajemo i razumijevamo arhitekturu prostora? Svaka okolina stvara specifičan "zvuk", predmete oko sebe možemo "vidjeti" slušanjem. Kako zvuči žitno polje, a kako zvuči usna?
Jedan od očeva digitalne audio-revolucije, Barry Blesser, otkriva nam "vokabular" prostora.
Veći ulomak knjige možete čitati ovdje (Google Books).


Spaces Speak, Are You Listening?: Experiencing Aural Architecture, Barry Blesser, Linda-Ruth Salter, MIT Press, 2007.

"We experience spaces not only by seeing but also by listening. We can navigate a room in the dark, and "hear" the emptiness of a house without furniture. Our experience of music in a concert hall depends on whether we sit in the front row or under the balcony. The unique acoustics of religious spaces acquire symbolic meaning. Social relationships are strongly influenced by the way that space changes sound. In Spaces Speak, Are You Listening?, Barry Blesser and Linda-Ruth Salter examine auditory spatial awareness: experiencing space by attentive listening. Every environment has an aural architecture.
The audible attributes of physical space have always contributed to the fabric of human culture, as demonstrated by prehistoric multimedia cave paintings, classical Greek open-air theaters, Gothic cathedrals, acoustic geography of French villages, modern music reproduction, and virtual spaces in home theaters. Auditory spatial awareness is a prism that reveals a culture's attitudes toward hearing and space. Some listeners can learn to "see" objects with their ears, but even without training, we can all hear spatial geometry such as an open door or low ceiling.

 Integrating contributions from a wide range of disciplines—including architecture, music, acoustics, evolution, anthropology, cognitive psychology, audio engineering, and many others—Spaces Speak, Are You Listening? establishes the concepts and language of aural architecture. These concepts provide an interdisciplinary guide for anyone interested in gaining a better understanding of how space enhances our well-being. Aural architecture is not the exclusive domain of specialists. Accidentally or intentionally, we all function as aural architects."

"Blesser and Salter have thoughtfully synthesized a wide range of technical, aesthetic, and humanistic considerations of aural architecture to create a valuable interdisciplinary resource for anyone interested in thinking about sound, space, and society."  —Emily Thompson, Professor of History, Princeton University, and author of The Soundscape of Modernity: Architectural Acoustics and the Culture of Listening in America, 1900-1933
 
"This wide-ranging, articulate, and probing investigation of how humans listen helps us to appreciate the value of natural and constructed acoustics. It also shows that our sense of the space of sound has largely been lost in the vast library of recorded music. This book will change how you listen. Well done!" —Floyd Toole, Vice President of Acoustical Engineering, Harman International Industries

"The authors present a groundbreaking synthesis of auditory spatial awareness as it has developed from cave acoustics through the modern concert hall to digital simulations of virtual spaces. Drawing on numerous disciplines, they summarize the scientific and cultural knowledge of the subtleties of acoustic spaces in a clear and readable manner, while challenging our social values about the optimal design of those spaces. A must-read for every student of architecture and aural culture."
Barry Truax, Professor and Composer, Simon Fraser University







Spaces Speak, Are You Listening?
Experiencing Aural Architecture




Introduction to aural architecture:

We experience spaces not only by seeing but also by listening. We can navigate a room in the dark, and "hear" the emptiness of a house without furniture. Our experience of music in a concert hall depends on whether we sit in the front row or under the balcony. The unique acoustics of religious spaces acquire symbolic meaning. Social relationships are strongly influenced by the way that space changes sound. In Spaces Speak, Are You Listening? Experiencing Aural Architecture, Barry Blesser and Linda-Ruth Salter examine auditory spatial awareness: experiencing space by attentive listening. Every environment has an aural architecture.

The audible attributes of physical space have always contributed to the fabric of human culture, as demonstrated by prehistoric multimedia cave paintings, classical Greek open-air theaters, Gothic cathedrals, acoustic geography of French villages, modern music reproduction, and virtual spaces in home theaters. Auditory spatial awareness is a prism that reveals a culture's attitudes toward hearing and space. Some listeners can learn to "see" objects with their ears, but even without training, we can all hear spatial geometry such as an open door or low ceiling.

Integrating contributions from a wide range of disciplines--including architecture, music, acoustics, evolution, anthropology, cognitive psychology, audio engineering, and many others--Spaces Speak, Are You Listening? establishes the concepts and language of aural architecture. These concepts provide an interdisciplinary guide for anyone interested in gaining a better understanding of how space enhances our well-being. Aural architecture is not the exclusive domain of specialists. Accidentally or intentionally, we all function as aural architects.

The major components of aural architecture include at least five types of spatiality: social, musical, navigations, aesthetic, and symbolic, all of which are described in this introduction.

The following lectures and articles are especially recommended:
Introduction to Aural Architecture presented to Belmont Library (mp3)
The Other Half of the Soundscape in proceedings WFAE, March 2009
The Other Half of the Soundscape presented to WFAE, March 2009 (mp3)
Aural Architecture broadcast on BBC World Service Discovery, 29 April 2009 (mp3)

List of libraries and book dealers that have Spaces Speak


Social spatiality in aural architecture:
When we think of architecture, we immediately visualize the properties of the space that can be seen, especially boundaries that influence movement and the legal rights of access. Walls and surfaces are tangible and readily apparent. In contrast, because sound flows through even the smallest opening, aural architecture has aural boundaries. Hogarth, in the picture below,  portrays the dismay of a musician who finds that his private music room and the hubbub of the street are in fact a single aural space. The open window destroys the aural boundary because sound flows freely through it. Opening the window changes the aural architecture, and the person who opened the window was an aural architect.

Hogarth's picture of Enranged Musician
Hogarth's Enraged Musician.Courtesy of Graphic Arts Collection, Princeton University.

Return to Introduction

Musical Spatiality in aural architecture:

The acoustics attributes of a space have an influence on the moods and feeling of those that inhabit the space. While the aural attributes of ordinary spaces change the mood and emotions of the inhabitants, the effect is best demonstrated with high-impact spaces, which are often selected by aural artists for their dramatic qualities. Searching for such space is easier than trying to construct them since it is impossible to auralize a space that one has never experienced.

Using the ancient stalactite cave of Jeita near Beirut, as shown in the figure below, Stockhausen performed several of his post-modern compositions. The musicians, located on a platform constructed over the abyss below, were illuminated with spotlights in an otherwise darkened environment.
Unlike a normal concert hall, listeners were as much as 80 meters from the performers, which allowed the natural acoustics to dominate the direct sound. Visitors gained access to the cave by walking for 15-minutes through a tunnel and smaller caves until they reached the main grotto.  A Catholic priest said of the performance of Stimmung, “It was the longest prayer I have ever known and the happiest.”

Picture of Jeita Cave near Beirut
Stockhausen's performance of "Stimmung" in the Jeita Cave near Beirut.Courtest of the Archives of Stockhausen Foundation for Music.

Return to Introduction

Navigational spatiality in aural architecture:

That we can hear spatial attributes, such as a wall or open window, is not widely recognized except by a those few blind individuals who have mastered the art of echolocation: creating an image of a space entirely by listening. This ability is learned and few of us have the inclination to acquire such skills. Yet, all of us have a latent and undeveloped ability to use our ears to supplement vision. Spelunkers get a sense of a cave by listening to the reverberation and echoes in areas that are completely hidden. We can feel the presence of an individual behind us by the subtlest sounds, and spatial acoustics influences that ability. The figure below illustrates how a group of blind teenagers were taught to ride their bicycle in the mountains of California. Not only does this ability allow for normal movement without vision but it builds confidence in using all the senses.

Picture of blind teenages riding their bicycles
Dan Kish's Team Bat leading blind teenagers on a bicycle ride.Courtest of Cal State L. A. Today, Stan Carstensen.

Return to Introduction

Aesthetic spatiality in aural architecture:

Just as we add ornaments and texture to our visual spaces to make them interesting and varied, so too can one add aural embellishments to change the local acoustics. In fact, most objects and geometries selected for their visual and artistic pleasure also have corresponding aural attributes.

Eusebio Sempere, a respected minimalist 20th century Spanish artist, created a sculpture composed of a three-dimensional array of polished stainless-steel tubes that rotates at its base, as shown in figure below.
In addition to its provocative visual effect as the moving surfaces reflect in the sunlight, it was also a sonic filter that blocked transmission of particular frequencies. A listener on one side heard a tonal modification of those sound sources located on the other side, the visual equivalent of colored glass prisms. This sculpture is an aural embellishment because it changes sounds that propagate through it.

Picture of Sempere's sculpture in Madrid

Eusebio Sempere's sculpture in Madrid has unique acoustic properties.Courtesy of Collection of Fundación Juan March, Madrid.

Return to Introduction

Symbolic spatiality in aural architecture:
Through repeated use in rituals and ceremonies, both the visual and aural properties of an object or geometry can acquire symbolic meaning associated with particular situations. In the visual world, these are called icons, and by symmetry, one could call the aural equivalent an earcon.

The figure below shows the Shrine of St. Werburgh in the Chester Cathedral. It contains six recesses where kneeling pilgrims inserted their heads while pleading their petition. The cavity serves both as amplifier and filter, thus giving the petitioner’s voice dramatic and emotional emphasis: only modest vocal effort is required to produce a strong voice. The shrine’s cavity becomes a unique private arena that also excludes external sounds—privacy without walls. Resonances contribute to the sense of being in another world; amplification contributes to intimacy; visual isolation contributes to privacy. Because the experience of being in such a space takes place in a religious ritual, the aural architecture of the cavity gradually acquires symbolic meaning.

Picture of Shrine of St. Werburgh

Shrine of St. Werburgh in the Chester Cathedral
Courtesy of Nicholas Fry

Finding a copy of Spaces Speak:

Spaces Speak is available in more that 500 libraries around the world, and it can be purchased  from most booksellers, especially online. Here are some useful links for finding a copy of the book.


Barry Blesser - Articles and podcasts available for download:

Although I have written many articles and memos for specific situations and publications over the years, the contents have broader implications that go beyond the specific context. With a modest amount of translation, the ideas can be applied to a vast array of other situations. These articles and memos may be freely distributed. But because they are copyrighted, they may not be published without my explicit permission. Information pertaining directly to Spaces Speak can be found at the pages Discussions and Downloads.



The Last Word from Radio World Engineering Extra (pdf):


Oct. 27, 2004 The Psychology of Technical Quality
Feb. 23, 2005 The Deadly Psychology of Schedules and Deadlines
Apr. 6, 2005 The Universal Applicability of Negotiating
Jun. 15, 2005 Technology Scarcity and Surplus
Aug. 24, 2005 The Broadcaster’s Choice: Your Space or My Space
Oct. 19, 2005 The Paradoxes of Learning
Dec. 14, 2005 The Shifting Forces that Are Affecting the Radio Industry
Feb. 2, 2006 Chaos Theory: Limits of Analysis and Predictions 
Apr. 15, 2006 The Evolving Gatekeepers of Headspace
Jun. 14, 2006 Ignoring Logical Reasoning is Logical 
Aug 23, 2006 CDs Prove Secondary Features Matter
Oct. 18, 2006 New Audio Villages Challenge Ballistic Radio
Dec. 13, 2006Social Spatiality Belongs in Radio Broadcasting
Feb. 21, 2007Educational Community for Engineers
Jun. 13, 2007The Tall Tale of the Long Tail
Aug. 22, 2007The Long Tail Wags Broadcasters
Oct. 17, 2007Does Innovation Drive Use of Technology?
Dec. 12, 2007Nothing Compares to Word-of-Mouth Buzz
Feb. 20, 2008Imagination: The Real Art of Radio
Apr. 16, 2008Radio Must Enfranchise Creative Talent
Jun. 11, 2008What Does It Mean to Manage?
Aug. 20, 2008Four Steps to Management Proficiency
Oct. 15, 2008What Does it Mean to be Multilingual?
Dec. 10, 2008Hidden and Diffuse Power of Corporate Culture
Feb. 18, 2009Soft-Skills Predict Professional Success
Apr. 15, 2009A System Model for Human Interactions
Jun. 10, 2009The Biological Cost of Stress in Broadcasting
Aug. 19, 2009Broadcasters: Head-Space Farmers in a New Ant Hill
Oct. 14, 2009Free But Fragile
Feb. 17, 2010Who Pays for Past Sins?
Apr. 13, 2010The Human Wonderland of System Complexity
Jun. 9, 2010Emotions as Engineering Glue
Oct. 13, 2010Flawed Human Communications


Unpublished articles (pdf):

Recorded lectures and podcasts (mp3):

Copyrighted reprints available from 3rd parties (links):


Dr. Barry Blesseris considered one of the grandfathers of the digital audio revolution. He invented and developed the first commercial digital reverberation system, the EMT-250 in 1976, helped start Lexicon in 1971, published the landmark paper, “Digital Processing of Audio Signals” in 1978, co-chaired the 1st International Conference on Digital Audio in 1980, and was an adviser to the US Justice Department on the Watergate Tapes in 1974. Dr. Blesser was President of the Audio Engineering Society in 1980. The AES awarded him their Silver, Bronze, and Governors Medals, both Publication Awards, and made him an AES Fellow. He has been on the AES editorial review board since 1975, and currently serves as its Consulting Technical Editor. Dr. Blesser has published numerous papers in professional journals and has been awarded many patents on audio and signal process.
After receiving his S.B, S.M and Ph.D. from MIT in Electrical Engineering in 1964, 1965, and 1969, Dr. Blesser served on the MIT faculty from 1969 to 1978 as an Associate Professor of Electrical Engineering and Computer Science. He taught courses on electronic, instrumentation, and audio technology while conducting research in the Cognitive Information Processing Laboratory.
After leaving academia in 1978, he has been a technical and management consultant working with more than 50 companies worldwide. He often functions as a change agent using the principles of risk engineering to maximize productivity and profitability. In addition, he has been an expert witness on patents cases, a Director of Engineering, and Chief Technology Officer, and a founding officer of several startup companies.  Most recently, MIT Press published his first book: Spaces Speak, Are You Listening? Experiencing Aural Architecture, which has provoked a latent interest in sound and acoustics worldwide. See also additional biographical information about the authors. Dr. Blesser, as a passionate advocate of the social consequences of corrosive acoustics, offers lectures and assistance  to those who want to be proactive in improving the aural quality of life.


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