Difference between revisions of "Colloquium"

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'''CCRMA Colloquium'''
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@5:30pm in the Classroom on Wednesdays!
  
The CCRMA Colloquium is a weekly gathering of CCRMA students, faculty and staff. It is an opportunity for members of the CCRMA community and guests to share the work that they are doing in the field of Computer Music.  The colloquium typically happens every Wednesday during the school year from 5:15 - 6:30.
+
The CCRMA Colloquium is a weekly gathering of CCRMA students, faculty, staff, and guests. It is an opportunity for members of the CCRMA community and invited speakers to share the work that they are doing in the fields of Computer Music, Audio Signal Processing and Music Information Retrieval, Psychoacoustics, and related fields.  The colloquium typically happens every Wednesday during the school year from 5:30 - 7:00pm and meets in the CCRMA Classroom, Knoll 217, unless otherwise noted.  
  
 +
The colloquium team for 2019-2020 is:<br />
 +
Mark Rau - mrau@ccrma.stanford.edu<br />
 +
Camille Noufi - cnoufi@ccrma.stanford.edu <br />
 +
Vidya Rangasayee - vidya@ccrma.stanford.edu <br />
 +
Scott Oshiro - soshiro@ccrma.stanford.edu
  
Autumn Quarter Schedule
 
  
'''[http://en.wikipedia.org/wiki/Electric_current Current]''' describes the quantity of electrons passing through a point in a circuit at a given instant in time.
+
*Note: the colloquium will not be held every Wednesday this year (19/20), please keep an eye on the notification e-mails for the dates.
Current is measured in '''[http://en.wikipedia.org/wiki/Ampere Amperes]''' ('''Amps''', '''A''').
+
  
'''[http://en.wikipedia.org/wiki/Voltage Voltage]''' describes the potential difference in electrical charge between two points in an electrical circuit. '''Voltage''' (also known as '''Electro motive force''' or '''EMF''') is measures in '''[http://en.wikipedia.org/wiki/Volt Volts]'''.
 
  
'''[http://en.wikipedia.org/wiki/Electrical_resistance Resistance]''' (a special case of '''[http://en.wikipedia.org/wiki/Electrical_impedance Impedance]''') describes the capacity of a circuit element to resist or impede the flow of electrons in the circuit. '''Resistance''' in measure in '''[http://en.wikipedia.org/wiki/Ohm_%28unit%29 Ohms]'''.
 
  
A common analogy may be used to relate these three quantities to water flow in pipes in place of electrons in wires. Current is analogous to the quantity of water flowing through a pipe at a given moment in time. Imagine you have two water tanks connected from the bottoms by a pipe (such as the drain of a double sink). If one tank is full of water and the other one empty we know intuitively that the water in the full tank will flow through the pipe into the empty tank until the level of water in the two tanks is equalized. The water in the full tank near the drain pipe is under pressure caused by gravity acting on the water above it in the tank. The difference in pressure between the water at the bottom of the full tank and the bottom of the empty (or only slightly full tank) is analogous to the voltage between poles of a battery (recall that voltage is always measured with respect to two distinct point in a circuit). In the case of a battery there is an excess of electrons present at the negative pole which are attracted to the electron holes at the positive pole with a potential or voltage determined by the chemical and physical properties of the battery.
 
  
Q: would the voltage change if we increased the amount of water in the full tank? yes - more water means more gravity acting on the water which results in greater pressure at the bottom of the tank.
 
  
Q: What happens if we open the pipe between the two tanks and let water flow? It flows from the full tank to the empty one until the level is the same in both. The same happens if you short the leads of a battery together without a resistor in between.
 
  
So what governs the time taken to equalize the level in the two tanks? The diameter of the pipe. The larger the pipe the less resistance there is to the water flow (or current) and the faster the levels equalize. Placing a resistor in an electric circuit has the same effect as placing a constriction in a water pipe. The amount of flow (or current) is not fixed, but given the same water pressure (or Voltage) the smaller the constriction the less flow occurs. Increasing the water pressure can counteract the reduction in flow. You can think of a battery as a pair of tanks, one full extra electrons and one empty to which extra electrons are attracted. (does adding constrictions hold in water as for electricity?) .... '''Ohm's Law''' ...
 
  
==Ohm's Law==
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= Spring Quarter (2020)=
 +
<span style="color:red">'''In person colloquiua will not be held for the 2020 Spring Quarter. The Rapid-Fire and Conference-Style talks will be held remotely.'''</span>
 +
<!--* '''5/13: [https://en.wikipedia.org/wiki/George_Lewis_(trombonist) George Lewis]'''-->
  
'''V = IR''' Ohm's Law states that '''Voltage''' = '''Current''' x '''Resistance''' or '''V = IR'''. The equation can be rearranged to find any one of the three quantities given the other two.
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* '''5/13: Rapid-Fire Talks'''  
  
Consider the following circuit:
+
** Speaker 1: Nette
 +
** Speaker 2: Matt
 +
** Speaker 3: Jan
 +
** Speaker 4: Bernard
 +
** Speaker 5: Jack
 +
** Speaker 6: CC
 +
** Speaker 7: Ge
 +
** Speaker 8: Mark
 +
** Speaker 9: Jatin
 +
** Speaker 10: Nando
 +
** Speaker 11: Travis
 +
** Speaker 12: Barbara
 +
** Speaker 13: Elena
 +
** Speaker 14: JOS
 +
** Speaker 15:
  
<center>
 
[[Image:Ohms_law_1.png]]
 
</center>
 
  
The voltage in the circuit is given (10V from the battery) and the resistance is also given as the 100 ohm resistor is the only resistive element in the circuit. So we can compute the current in the circuit as: I = V/R = 10V / 100 Ohms = 0.1 Amps or 100 milli-Amps.
+
* '''5/27: Conference-Style Talks'''
  
==Button LED Example==
+
** Speaker 1: Jarek & François "Noh as Intermedia: A Web-based Publication and Research Environment"
 +
** Speaker 2:
 +
** Speaker 3:
  
The following circuit diagram show the most basic LED (Light Emitting Diode) circuit:
+
= Winter Quarter (2020)=
  
<center>
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* '''1/8: No Colloquium '''
[[Image:led.png]]
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* '''1/15: No Colloquium to avoid conflict with the Jazz Faculty Search'''
</center>
+
* '''1/22: No Colloquium to avoid conflict with the Jazz Faculty Search'''
 +
* '''1/29: No Colloquium to avoid conflict with the Jazz Faculty Search'''
 +
* '''2/5: Rapid-Fire Talks'''
  
Diodes are from the family of semiconductors. Unlike a resistors, diodes always have a fixed voltage drop in a circuit. A diode passes current in only one direction, a very useful property for protecting circuits from incorrect current flow. The arrow in the diode symbol points in the direction that current flows, so normally you would place a diode in your circuit with the arrow pointing to a ground. Therefore once we know the current passing through the resistor in this circuit we also know the current passing through the LED. The brightness of an LED is proportional to the amount of current passing through it. How would you make the LED shine brighter? less brightly?
+
** Speaker 1: Mark Rau
 +
** Speaker 2: Elliot C-D
 +
** Speaker 3: Jack Atherton
 +
** Speaker 4: GASP (waterbottles)
 +
** Speaker 5: Fernando Lopez-Lezcano
 +
** Speaker 6: Julius Smith
 +
** Speaker 7: Matt Wright (all about the [https://en.wikipedia.org/wiki/Oud ud] and previewing the spring visit by [http://www.necaticelik.com.tr/en/biyografi/ Necati Çelik])
 +
** Speaker 8: Ge Wang
 +
** Speaker 9: Jatin
 +
** Speaker 10: Travis Skare
 +
** Speaker 11: Camille Noufi
 +
** Speaker 12: Kim Kawczinski
  
Now consider the following circuit which adds a button:
 
  
<center>
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* '''2/12: CCRMA Town Hall
[[Image:button_led.png]]
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* '''2/19: [http://www.marcevansmusic.com/bio.html Marc Evanstein]''' (Week 7)
</center>
+
* '''2/26: Conference-Style Talks '''
 +
** Speaker 1: SooperLoopy, a multi-loop sampler - the music behind the software and the software behind the music
 +
** Speaker 2:
 +
** Speaker 3:
 +
** Backup: Topics in GPU audio: background, filter banks, waveguides, meshes. Didn't prepare specifically for this week but see that there's only one topic so far, so can present this if needed. Thanks! (Travis)
  
The button simply interrupts or re-connects the flow of current through the circuit lighting or extinguishing the LED in the process.
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* '''3/4:'''  CANCELLED [http://www.justinsalamon.com/ Justin Salamon (Adobe / MARL-NYU)]''' (Week 9)
  
<center>
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* '''3/11: CANCELLED [http://www.sampluta.com/biographyText.html Samuel Pluta]''' (Week 10)
[[PID 2007]]
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</center>
+
  
 +
= Fall Quarter (2019)=
  
[[Category:PID]][[Category:PID_2007]]
+
* '''9/25: New Student Presentations''' (Week 1)
 +
** Speaker 1: Jeremy Raven
 +
** Speaker 2: Brendan Larkin
 +
** Speaker 3: Raul Altosaar
 +
** Speaker 4: Jan Stoltenberg
 +
** Speaker 5: Vivian Chen
 +
** Speaker 6: Ty Sadlier
 +
** Speaker 7: Kunwoo Kim
 +
** Speaker 8: Andrea Baldioceda
 +
** Speaker 9: Varsha Sankar
 +
** Speaker 10: Mike Mulshine
 +
 
 +
 
 +
* '''10/2: Faculty Introductions''' (Week 2)
 +
** Speaker 1: Patricia Alessandrini
 +
** Speaker 2: Eleanor Selfridge Field
 +
** Speaker 3: Craig Stuart Sapp
 +
** Speaker 4: JRB
 +
** Speaker 5: Takako
 +
** Speaker 6: Ge
 +
** Speaker 7: Jarek
 +
** Speaker 8: Blair Kaneshiro
 +
** Speaker 9: Matt Wright
 +
** Speaker 10: Fernando Lopez-Lezcano
 +
** Speaker 11: Anne Hege
 +
** Speaker 12: Julius Smith
 +
** Speaker 13: Elena Georgieva
 +
** Speaker 14: Marina Bosi
 +
** Speaker 15: Hongchan Choi
 +
 
 +
 
 +
* '''10/9: ''' (Week 3): YOM KIPPUR - no colloquium
 +
 
 +
 
 +
* '''10/16: Rapid-Fire Talks''' (Week 4)
 +
** Speaker 1: Jack
 +
** Speaker 2: Jason
 +
** Speaker 3: Ge
 +
** Speaker 4: Noah
 +
** Speaker 5: Elliot
 +
** Speaker 6: Barbara
 +
** Speaker 7: Orchi
 +
** Speaker 8: Matt (the "after" of my Modulations instrument, hopefully this time with MIDI working)
 +
** Speaker 9: CCRMA composting
 +
** Speaker 10: Jatin
 +
** Speaker 11: Mark
 +
** Speaker 12: Elena
 +
** Speaker 13: Carlos
 +
 
 +
 
 +
* '''10/23: [http://www.arj.no/ Alexander Jensenius]''' (Week 5) 
 +
 
 +
* '''10/30: No Colloquium''' (Week 6) 
 +
 
 +
* '''11/6: [http://www.annehege.com/ Anne Hege]''' (Week 7)
 +
 
 +
* '''11/13: CCRMA Town Hall''' (Week 8)
 +
 
 +
* '''11/20:[https://www.donlewismusic.com/ Don Lewis]''' (Week 9)
 +
 
 +
* '''Thanksgiving week'''
 +
 
 +
* '''12/4: [https://ccrma.stanford.edu/groups/vr/ VR Lab Day]''' (Week 11)

Latest revision as of 13:54, 21 May 2020

@5:30pm in the Classroom on Wednesdays!

The CCRMA Colloquium is a weekly gathering of CCRMA students, faculty, staff, and guests. It is an opportunity for members of the CCRMA community and invited speakers to share the work that they are doing in the fields of Computer Music, Audio Signal Processing and Music Information Retrieval, Psychoacoustics, and related fields. The colloquium typically happens every Wednesday during the school year from 5:30 - 7:00pm and meets in the CCRMA Classroom, Knoll 217, unless otherwise noted.

The colloquium team for 2019-2020 is:
Mark Rau - mrau@ccrma.stanford.edu
Camille Noufi - cnoufi@ccrma.stanford.edu
Vidya Rangasayee - vidya@ccrma.stanford.edu
Scott Oshiro - soshiro@ccrma.stanford.edu


  • Note: the colloquium will not be held every Wednesday this year (19/20), please keep an eye on the notification e-mails for the dates.




Spring Quarter (2020)

In person colloquiua will not be held for the 2020 Spring Quarter. The Rapid-Fire and Conference-Style talks will be held remotely.

  • 5/13: Rapid-Fire Talks
    • Speaker 1: Nette
    • Speaker 2: Matt
    • Speaker 3: Jan
    • Speaker 4: Bernard
    • Speaker 5: Jack
    • Speaker 6: CC
    • Speaker 7: Ge
    • Speaker 8: Mark
    • Speaker 9: Jatin
    • Speaker 10: Nando
    • Speaker 11: Travis
    • Speaker 12: Barbara
    • Speaker 13: Elena
    • Speaker 14: JOS
    • Speaker 15:


  • 5/27: Conference-Style Talks
    • Speaker 1: Jarek & François "Noh as Intermedia: A Web-based Publication and Research Environment"
    • Speaker 2:
    • Speaker 3:

Winter Quarter (2020)

  • 1/8: No Colloquium
  • 1/15: No Colloquium to avoid conflict with the Jazz Faculty Search
  • 1/22: No Colloquium to avoid conflict with the Jazz Faculty Search
  • 1/29: No Colloquium to avoid conflict with the Jazz Faculty Search
  • 2/5: Rapid-Fire Talks
    • Speaker 1: Mark Rau
    • Speaker 2: Elliot C-D
    • Speaker 3: Jack Atherton
    • Speaker 4: GASP (waterbottles)
    • Speaker 5: Fernando Lopez-Lezcano
    • Speaker 6: Julius Smith
    • Speaker 7: Matt Wright (all about the ud and previewing the spring visit by Necati Çelik)
    • Speaker 8: Ge Wang
    • Speaker 9: Jatin
    • Speaker 10: Travis Skare
    • Speaker 11: Camille Noufi
    • Speaker 12: Kim Kawczinski


  • 2/12: CCRMA Town Hall
  • 2/19: Marc Evanstein (Week 7)
  • 2/26: Conference-Style Talks
    • Speaker 1: SooperLoopy, a multi-loop sampler - the music behind the software and the software behind the music
    • Speaker 2:
    • Speaker 3:
    • Backup: Topics in GPU audio: background, filter banks, waveguides, meshes. Didn't prepare specifically for this week but see that there's only one topic so far, so can present this if needed. Thanks! (Travis)

Fall Quarter (2019)

  • 9/25: New Student Presentations (Week 1)
    • Speaker 1: Jeremy Raven
    • Speaker 2: Brendan Larkin
    • Speaker 3: Raul Altosaar
    • Speaker 4: Jan Stoltenberg
    • Speaker 5: Vivian Chen
    • Speaker 6: Ty Sadlier
    • Speaker 7: Kunwoo Kim
    • Speaker 8: Andrea Baldioceda
    • Speaker 9: Varsha Sankar
    • Speaker 10: Mike Mulshine


  • 10/2: Faculty Introductions (Week 2)
    • Speaker 1: Patricia Alessandrini
    • Speaker 2: Eleanor Selfridge Field
    • Speaker 3: Craig Stuart Sapp
    • Speaker 4: JRB
    • Speaker 5: Takako
    • Speaker 6: Ge
    • Speaker 7: Jarek
    • Speaker 8: Blair Kaneshiro
    • Speaker 9: Matt Wright
    • Speaker 10: Fernando Lopez-Lezcano
    • Speaker 11: Anne Hege
    • Speaker 12: Julius Smith
    • Speaker 13: Elena Georgieva
    • Speaker 14: Marina Bosi
    • Speaker 15: Hongchan Choi


  • 10/9: (Week 3): YOM KIPPUR - no colloquium


  • 10/16: Rapid-Fire Talks (Week 4)
    • Speaker 1: Jack
    • Speaker 2: Jason
    • Speaker 3: Ge
    • Speaker 4: Noah
    • Speaker 5: Elliot
    • Speaker 6: Barbara
    • Speaker 7: Orchi
    • Speaker 8: Matt (the "after" of my Modulations instrument, hopefully this time with MIDI working)
    • Speaker 9: CCRMA composting
    • Speaker 10: Jatin
    • Speaker 11: Mark
    • Speaker 12: Elena
    • Speaker 13: Carlos


  • 10/30: No Colloquium (Week 6)
  • 11/13: CCRMA Town Hall (Week 8)
  • Thanksgiving week