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added richard mann prof talk

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Bryan Coutts 2016-11-14 12:10:50 -05:00
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events.xml
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@ -5,6 +5,57 @@
<!-- Fall 2016 -->
<eventitem date="2016-11-21" time="6:00 PM" room="MC 4063" title="Richard Mann Prof Talk">
<short>
<p>
Professor Richard Mann will be giving a talk, titled "Open Source
Software for Sound Measurement and Analysis". He will be presenting
information about his new course, CS 489, Computational Sound, which
will be running in Winter 2017.
</p>
</short>
<abstract>
<p>
Professor Richard Mann will be giving a talk, titled "Open Source
Software for Sound Measurement and Analysis". He will be presenting
information about his new course, CS 489, Computational Sound, which
will be running in Winter 2017. The abstract for this talk is below.
<br/><br/>
</p>
<p>
The most common problem in acoustics is to measure the frequency
response of an (expensive!) listening room. While specifications
exist for the amplifiers, speakers, etc, each system must be still
evaluated individually, since the frequency response depends on the
direct sound from the speaker(s), the listener position and the
reverberation of the room. The user may spend considerable time
adjusting the speaker placement, the system equalization, and
possibly treating the room to get the best response.
</p>
<p>
There are several commercial and freeware applications for this task,
some of which are very good. However, to learn the methods the user
must understand the processing involved.
</p>
<p>
The purpose of this talk is to present an open source solution. Our
system is based on a very few lines of code, written in GNU Octave, a
Matlab(r) workalike that runs under Linux, Windows and Mac.
</p>
<p>
The program works by playing a known test signal, such a tone, or
some kind of noise source out of the sound card into the system. The
system is measured by comparing driving signal to that measured by a
microphone in the room. The frequency response is computed using the
Discrete Fourier Transform (DFT).
</p>
<p>
This is joint work with Prof. John Vanderkooy, Physics, University of
Waterloo.
</p>
</abstract>
</eventitem>
<eventitem date="2016-11-16" time="8:30 PM" room="M3 1006" title="General Meeting">
<short>
<p>