From: malcolm@apple.com
Date: Mon, 31 Jan 94 11:07:23 -0800
Subject: Pattern Playback THIS Week
Message-Id: <9401311907.AA24797@apple.com>

I'm sorry for the confusion.  Last week's announcement for the CCRMA Hearing
Seminar got lost in a mail queue here at Apple.  I received my copy, but most
people didn't.  It was confusing.  There was no seminar last week at CCRMA.  
Here is the annoucement for this week's seminar.

This week I will be leading the discussion at the Stanford CCRMA Hearing
Seminar.  A number of us at Apple have been working on new techniques for
creating sounds from their pictures.  I like to think of this as pattern
playback for the 90's.
 
This week's talk will focus on two issues
        - What information in a picture is needed to recreate a sound?
        - How do we do it?
 
The first issue addresses the quality of our representations.  If we have a
fairly detailed spectrogram, we can throw away the phase and still get a good
sounding signal.  Does the same happen with cochleagrams (outputs of a
cochlear model) and correlograms (outputs from a timing model)?  Our
reconstructions say yes.
 
The second issue relates to the signal processing magic.  I'll talk a bit
about the algorithms, what works, and how well they work. (And I'll try to use
lots of examples.)
 
        Who:    Malcolm Slaney (with Dan Naar, Dick Lyon)
        Why:    Come to hear lots of sounds from pictures
        What:   Pattern Playback in the 90's
                Making sounds from spectrograms, cochleagrams and
                correlograms
        When:   Thursday, February 3rd at 11AM
        Where:  CCRMA Ballroom (same as last week, not the library)
		Main floor of the Knoll at Stanford.
 
See you at CCRMA later this week!
 
---- Malcolm