Difference between revisions of "Colloquium"

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'''CCRMA Colloquium'''
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@5:30pm in the Classroom!
  
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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.
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=Winter Quarter=
  
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* '''1/11: Internal Colloquium'''
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** speaker 1: Nolan Lem -
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** speaker 2: Servio
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** speaker 3:
  
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Autumn Quarter Schedule
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* '''1/18: Julia Talk'''
  
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'''[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.
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* '''1/25: Rapid Fire Talks''':
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Current is measured in '''[http://en.wikipedia.org/wiki/Ampere Amperes]''' ('''Amps''', '''A''').
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** speaker 1: Romain Michon
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** speaker 2: Julius Smith
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** speaker 3: Eoin
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** speaker 4: Chris C
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** speaker 5: Madeline Huberth
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** speaker 6: Lonce Wyse
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** speaker 7: Jack Atherton
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** speaker 8: Irán Román
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** speaker 9: Matt Wright
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** speaker 10: Elliot Kermit Canfield-Dafilou
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** speaker 11: Nette Worthey
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** speaker 12:
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** speaker 13:
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** speaker 14:
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** speaker 15:
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** speaker 16:
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** speaker 17:
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** speaker 18:
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** speaker 19:
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** speaker 20:  
  
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'''[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]'''.
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* '''2/1: Vibeke Sorensen'''
  
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'''[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]'''.
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* '''2/8: Adrian Freed'''
  
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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.
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* '''2/15: Maneesh Agrawala'''
  
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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.
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* '''2/22: '''
  
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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.
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* '''3/1: Internal Colloquium'''
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** speaker 1: Fernando Lopez-Lezcano, topic to be determined
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** speaker 2: Romain Michon
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** speaker 3: Jonathan Abel
  
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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''' ...
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* '''3/8: Thomas Dimuzio'''
  
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==Ohm's Law==
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* '''3/15: Ali Momeni'''
  
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'''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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= Fall Quarter =
  
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Consider the following circuit:
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* '''9/28: New Student Presentations''' (Elliot)
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** Speaker 1: Yuval Adler, about "Being Brave and Signing Up to Be the First Speaker"
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** Speaker 2: Chris Lortie
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** Speaker 3: Juan Sierra, not sure about what but I'll figure it out
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** Speaker 4: Mark Hertensteiner, "Omnisonnace (working title): a music RPG"
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** Speaker 5: Megan Jurek
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** Speaker 6: Mark Rau
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** Speaker 7: Julie Herndon
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** Speaker 8: Yijun Zhou, "Global Net Orchestra Drum Circle"
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** Speaker 9: Rahul Agnihotri, "I Know Nothing, But I Will!"
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** Speaker 10: Ruoxi Zhang
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** Speaker 11: Mu-Heng Yang, "MIR using Deep Learning"
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** Speaker 12: Orchisama Das, "HUMs and other such things"
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** Speaker 13: Walker Davis
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** Speaker 14: Davor Branimir Vincze "Inflection Point"
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** Speaker 15: Prateek Murgai "My Journey"
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** Speaker 16: Jack Atherton
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** Speaker 17:
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** Speaker 18:
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** Speaker 19:
  
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<center>
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* '''10/5 Ge Wang and Chris Chafe:''' (Kitty)
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[[Image:Ohms_law_1.png]]
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</center>
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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.
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* '''10/12: Fernando Lopez Lezcano and Julius Smith''' (Alex)
  
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==Button LED Example==
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* '''10/19: Rapid fire talks''' (Iran)
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** Speaker 1: Romain Michon
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** Speaker 2: Paul Batchelor
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** Speaker 3: Elliot Kermit-Canfield
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** Speaker 4: Nolan Lem
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** Speaker 5: Aury Washburn
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** Speaker 6: Alex Chechile
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** Speaker 7: Nick Gang
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** Speaker 8: Chryssie Nanou
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** Speaker 9: Byron Walker
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** Speaker 10: Carlos Sánchez
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** Speaker 11: Kurt Werner
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** Speaker 12: Matt Wright
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** Speaker 13: Michael Olsen
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** Speaker 14: Sara Martín
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** Speaker 15: Möbius Román
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** Speaker 16: Christopher Jette
  
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The following circuit diagram show the most basic LED (Light Emitting Diode) circuit:
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* '''10/26: no colloquium'''
  
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<center>
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* '''11/2: Øyvind Brandtsegg'''
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[[Image:led.png]]
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</center>
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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?
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* '''11/9: Jarek Kapuscinski and Matt Wright'''
  
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Now consider the following circuit which adds a button:  
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* '''11/16: Tom Rossing and Jay LeBoeuf''' (Madeline)
  
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<center>
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* '''Thanksgiving'''
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[[Image:button_led.png]]
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</center>
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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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* '''11/30: Sasha Leitman and Takako Fuijoka''' (Madeline)
  
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<center>
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* '''12/7: Craig Sapp, and Eleanor Selfridge-Field''' (Elliot)
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[[PID 2007]]
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</center>
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[[Category:PID]][[Category:PID_2007]]
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Revision as of 16:22, 31 January 2017

@5:30pm in the Classroom!

Winter Quarter

  • 1/11: Internal Colloquium
    • speaker 1: Nolan Lem -
    • speaker 2: Servio
    • speaker 3:
  • 1/18: Julia Talk
  • 1/25: Rapid Fire Talks:
    • speaker 1: Romain Michon
    • speaker 2: Julius Smith
    • speaker 3: Eoin
    • speaker 4: Chris C
    • speaker 5: Madeline Huberth
    • speaker 6: Lonce Wyse
    • speaker 7: Jack Atherton
    • speaker 8: Irán Román
    • speaker 9: Matt Wright
    • speaker 10: Elliot Kermit Canfield-Dafilou
    • speaker 11: Nette Worthey
    • speaker 12:
    • speaker 13:
    • speaker 14:
    • speaker 15:
    • speaker 16:
    • speaker 17:
    • speaker 18:
    • speaker 19:
    • speaker 20:
  • 2/1: Vibeke Sorensen
  • 2/8: Adrian Freed
  • 2/15: Maneesh Agrawala
  • 2/22:
  • 3/1: Internal Colloquium
    • speaker 1: Fernando Lopez-Lezcano, topic to be determined
    • speaker 2: Romain Michon
    • speaker 3: Jonathan Abel
  • 3/8: Thomas Dimuzio
  • 3/15: Ali Momeni

Fall Quarter

  • 9/28: New Student Presentations (Elliot)
    • Speaker 1: Yuval Adler, about "Being Brave and Signing Up to Be the First Speaker"
    • Speaker 2: Chris Lortie
    • Speaker 3: Juan Sierra, not sure about what but I'll figure it out
    • Speaker 4: Mark Hertensteiner, "Omnisonnace (working title): a music RPG"
    • Speaker 5: Megan Jurek
    • Speaker 6: Mark Rau
    • Speaker 7: Julie Herndon
    • Speaker 8: Yijun Zhou, "Global Net Orchestra Drum Circle"
    • Speaker 9: Rahul Agnihotri, "I Know Nothing, But I Will!"
    • Speaker 10: Ruoxi Zhang
    • Speaker 11: Mu-Heng Yang, "MIR using Deep Learning"
    • Speaker 12: Orchisama Das, "HUMs and other such things"
    • Speaker 13: Walker Davis
    • Speaker 14: Davor Branimir Vincze "Inflection Point"
    • Speaker 15: Prateek Murgai "My Journey"
    • Speaker 16: Jack Atherton
    • Speaker 17:
    • Speaker 18:
    • Speaker 19:
  • 10/5 Ge Wang and Chris Chafe: (Kitty)
  • 10/12: Fernando Lopez Lezcano and Julius Smith (Alex)
  • 10/19: Rapid fire talks (Iran)
    • Speaker 1: Romain Michon
    • Speaker 2: Paul Batchelor
    • Speaker 3: Elliot Kermit-Canfield
    • Speaker 4: Nolan Lem
    • Speaker 5: Aury Washburn
    • Speaker 6: Alex Chechile
    • Speaker 7: Nick Gang
    • Speaker 8: Chryssie Nanou
    • Speaker 9: Byron Walker
    • Speaker 10: Carlos Sánchez
    • Speaker 11: Kurt Werner
    • Speaker 12: Matt Wright
    • Speaker 13: Michael Olsen
    • Speaker 14: Sara Martín
    • Speaker 15: Möbius Román
    • Speaker 16: Christopher Jette
  • 10/26: no colloquium
  • 11/2: Øyvind Brandtsegg
  • 11/9: Jarek Kapuscinski and Matt Wright
  • 11/16: Tom Rossing and Jay LeBoeuf (Madeline)
  • Thanksgiving
  • 11/30: Sasha Leitman and Takako Fuijoka (Madeline)
  • 12/7: Craig Sapp, and Eleanor Selfridge-Field (Elliot)
Retrieved from "https://ccrma.stanford.edu/mediawiki/index.php?title=Colloquium&oldid=19559"