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Matlab resources
This page links to the various Matlab resources associated with the course. Most of these resources are located in the
course Matlab directory.
You will need access to a computer running Matlab to complete the
course material. The Unix workstations in the AcIS Engineering Terrace
(215 Mudd) are one place to do this, and the EE department "ILAB"
machines (1235 Mudd) is another. You can
also buy a fully-functional "student edition" of Matlab various
places including directly from
The Mathworks.
Matlab release R2008b is the current version.
Any version from 6.5 onwards (release 13) should be fine for the course.
The Columbia Bookstore may have some boxed copies of the student version.
- 2009-01-20:
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Here is the
diary
of the Matlab examples used in today's class.
The associated scripts and data can be downloaded from the
course Matlab directory.
- 2009-01-27:
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Here is the
diary
of the Matlab examples from today's class on acoustics
and travelling waves, etc.
- 2009-02-03:
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Today's diary
demonstrates the use of Gaussian models
for simple pattern classification, including generating the figures
shown during class.
See also this
nice online
demo of a range of classifier algorithms, and this
online demo of fitting a GMM with EM (alternate version
here).
- 2009-02-10:
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There are some nice MATLAB cochlea models available from the Boston University EARlab (down as
of 2009-02-14, but may reappear). Try
downloading the Peterson and Bogert model along with the Basilar
Membrane animation routine from their
Matlab
models page (local copies: PBmodel.m,
BManimation.m). Running the
model (for frequencies in the range 1000-8000 Hz) then running the
animation gives a nice visualization of the behavior of
travelling waves in the variable-resonance structure of the
Basilar Membrane.
There's also a nice animated graphic that makes the same point on
WADA lab auditory mechanics page
from Tohoku University. And there's a very nice
flash animation of spectral analysis in the cochlea
from the Hudspeth Lab at Rockerfeller University.
- 2009-02-19:
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Diary of LPC analysis/
synthesis examples relating to today's lecture. (The
functions lpcfit.m and lpcsynth.m
are in the Matlab directory).
- 2009-03-03:
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The sinewave modeling stuff from today's class is all documented on
my
sinewave modeling page. Auditory icon examples can be found at
the Sounding Object site.
Under "Software" on that site you'll find some Matlab code for synthesizing
these kinds of sounds.
- 2009-03-05:
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Diary of Encoding and quantizing speech.
- 2009-04-07:
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Diary of broad phonetic classification of speech frames using MFCC features.
Dan Ellis
<[email protected]>
Last updated: Tue Apr 07 10:40:09 AM EDT 2009
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