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3D Sound Project

Stephanie Salaun $<$salauns at ccrma$>$ (CCRMA Visiting Researcher)

Hi everybody!

On Friday, October 25th, at 3h15 in the CCRMA Library, I am presenting part of my 3D sound project (it's not quite finished). Here is the abstract for those who are interested:

In every day life sounds are all around us in the horizontal and vertical planes. One of the methods for reproducing virtual sound is to binaurally record a sound and play it back through headphones or through loudspeakers. When using headphones the sound is played back with only a small transmission loss, so the signal is almost reproduced correctly at each ear.

However playing back the sound through loudspeakers creates crosstalk between them, an unwanted effect that may be removed by signal processing (crosstalk cancellation algorithm).

When trying to produce 3D sound through loudspeakers, we have to consider the loudspeakers 'setup, the crosstalk cancellation algorithm, the room, and other factors. This method will reproduce the 3D sound accurately at only one head position, known as the ``sweet spot''.

My system has four loudspeakers above the listener splitting the frequency into two frequency bands. The crosstalk cancellation is achieved using adaptive filtering.

Currently, I have having some difficulties with the implementation of my algorithms and I hope to get some feedback during the seminar.

Stephanie


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Download mus423h.pdf

``CCRMA DSP Seminar Prior Abstracts'', by Julius O. Smith III, Aut-Spr Quarters, CCRMA Ballroom, The Knoll, Stanford University.
Copyright © 2005-12-28 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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