CNMAT Flashback

A look back at some items in our archives.

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Publication

Towards a More Effective OSC Time Tag Scheme

A. Freed, “Towards a More Effective OSC Time Tag Scheme”, in Open Sound Control Conference, Berkeley, CA, 2004.

Time tags are not widely used in OSC. This paper will introduce the original intention of time tags, discuss the challenges of implementing and using them, and introduce some new ideas about how they might be better employed and implemented.

Time tags were introduced to address a number of problems and concerns we encountered at CNMAT using a predecessor protocol to OSC:

Publication

Characterization of Spherical Loudspeaker Arrays

P. Kassakian and Wessel, D., “Characterization of Spherical Loudspeaker Arrays”, in 117th Audio Engineering Society Convention, San Francisco, CA, 2004, p. Convention paper #1430.

The synthesis and rotational control of radiation patterns produced by spherical arrays of loudspeakers is studied. We identify operating regions, in terms of complexity of patterns and frequency ranges, over which patterns can be accurately synthesized. By considering an inner product space of far- eld patterns, we can reason geometrically about approximation errors when using the systems to synthesize and control target responses.

Publication

Design of Low-Order Filters for Radiation Synthesis

P. Kassakian and Wessel, D., “Design of Low-Order Filters for Radiation Synthesis”, in 115th Audio Engineering Society Conventtion, New York, NY, 2003, p. Convention Paper 5925.

A fundamental goal of sound synthesis is to reproduce, and to control, as many facets of the sound as possible. By numerically solving a carefully constructed optimization problem, we are able to design low-order filters for use with a dodecahedral loudspeaker array to synthesize low order spherical harmonics over specified frequency ranges. The method, a variant of least-squares, is general, allowing for the inclusion of side constraints, arbitrary array geometry, and incorporation of measured loudspeaker characteristics.

Publication

Volumetric Modeling of Acoustic Fields for Musical Sound Design in a New Sound Spatialization Theatre

A. Kaup, Freed, A., Khoury, S., and Wessel, D., “Volumetric Modeling of Acoustic Fields for Musical Sound Design in a New Sound Spatialization Theatre”, in International Computer Music Conference, Beijing, China, 1999, pp. 488-491.

Volumetric Modeling of Acoustic Fields in CNMATs Sound
Spatialization Theatre

Arnold Kaup, Sami Khoury, Adrian Freed, David Wessel

CNMAT, UC Berkeley, 1750 Arch Street, Berkeley, CA 94709

(510) 643 9990

{akaup,khoury,adrian,wessel}@cnmat.berkeley.edu

 

Publication

Volumetric Modeling of Acoustic Fields in CNMAT's Sound Spatialization Theatre

S. Khoury, Freed, A., and Wessel, D., “Volumetric Modeling of Acoustic Fields in CNMAT's Sound Spatialization Theatre”, in Audio Engineering Society 104th Convention, San Francisco, CA, 1998.

Volumetric Modeling of Acoustic Fields in CNMAT's
Sound Spatialization Theatre

Sami Khoury,
Adrian Freed,
David Wessel

CNMAT, UC Berkeley, 1750 Arch Street, Berkeley, CA 94709

(510) 643 9990 x 308 adrian@cnmat.berkeley.edu

Abstract

Publication

Situated Trio: An Interactive Live Performance for a Hexaphonic Guitarist and Two Computer Musicians with Expressive Controllers

D. Wessel, Wright, M., and Schott, J., “Situated Trio: An Interactive Live Performance for a Hexaphonic Guitarist and Two Computer Musicians with Expressive Controllers”, in International Conference on New Interfaces for Musical Expression (NIME), Dublin, Ireland, 2002, pp. 171-173.

Situated Trio: An Interactive Live
Performance for a Hexaphonic Guitarist and Two Computer Musicians
with Expressive Controllers

David Wessel, Matthew Wright, John Schott

Center for New Music and Audio Technology (CNMAT)

Department of Music,
Univ. of California, Berkeley

1750 Arch Street, Berkeley, CA, USA

{wessel, matt}@cnmat.berkeley.edu, john@johnschott.com

 

Abstract:

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