MUS423 Research Seminars

The CCRMA Music 423 Research Seminar brings graduate students and supervising faculty together for planning and discussion of original research. Students and faculty meet either in small groups or individually, as appropriate for the research topics and interests of the participants. Research carried out is typically presented at the weekly CCRMA Colloquium (if it is of general interest to the CCRMA community) or at a Special DSP Seminar scheduled for that purpose.  In either case, announcements appear on the CCRMA Home Page as Upcoming Events.

Recent DSP Seminars

  • Frequency Shifting for Acoustic Howling Suppression

    Date: 
    Wed, 05/12/2010 - 4:30pm
    Location: 
    CCRMA Classroom (Rm. 217)
    Event Type: 
    DSP Seminar
    Acoustic feedback is capable of driving an electroacoustic amplification system unstable. Inserting a frequency shifter into the feedback loop can increase the maximum stable gain before instability. In this paper, we explain how frequency shifting can effectively smooth out the feedback loop magnitude response, and how this relates to the system stability. Then we describe measurements on real acoustic systems that we employ to study the practical performance.
    Open to the Public
  • Toward Improved Piano-String Modeling for Real-Time Synthesis

    Date: 
    Wed, 05/05/2010 - 4:30pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar
    Previous digital waveguide models for piano strings have been based on a single transverse plane of vibration.  More recent modal-synthesis models (Bank 2010) have added coupled longitudinal waves to provide missing "phantom partials".  We know from Antoine Chaigne's recent lecture series and Harold Conklin's classic sound examples (http://www.speech.kth.se/music/5_lectures/sounds/sounds.html) that the longitudinal component of piano-string vibration is important to include in any complete synthesis model.
    For CCRMA Users Only
  • A Non-negative Framework for Joint Modeling of Spectral Structure and Temporal Dynamics in Sound Mixtures

    Date: 
    Wed, 04/28/2010 - 4:30pm
    Location: 
    CCRMA Classroom (Rm. 217)
    Event Type: 
    DSP Seminar
    Presenter: Gautham J. Mysore
    Open to the Public
  • Overview of Spectral and Physical Models for Sound, Part II

    Date: 
    Wed, 04/21/2010 - 4:30pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar

    Overview of Spectral and Physical Models for Sound, Part II
    Julius Smith
    Part II will continue with recent history in spectral modeling approaches to sound modeling, followed by a summary of physical modeling approaches (with sound examples).  Time permitting, implementations in the Faust language will be discussed.

     
    Open to the Public
  • Overview of Spectral and Physical Models for Sound, Part I

    Date: 
    Wed, 04/14/2010 - 4:30pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar
    Overview of Spectral and Physical Models for Sound
    Part I: Daniel Bernoulli versus Jean le Rond d'Alembert (with weigh-in from Euler and Lagrange)
    Julius Smith
    Open to the Public
  • Practical Modeling of Bucket Brigade Device Circuits

    Date: 
    Wed, 04/07/2010 - 4:30pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar

    Practical Modeling of Bucket Brigade Device Circuits

    Colin Raffel, CCRMA MA/MST student

    This talk will discuss the sonic characteristics of the bucket-brigade device (BBD) and their associated circuitry.   BBDs are integrated circuits which sample the incoming audio signal and produce a time-delayed version at their output.

    Open to the Public
  • Modeling Spectral and Temporal Structure in Sound Mixtures

    Date: 
    Wed, 03/31/2010 - 4:30pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar
    Presenter: Gautham J. Mysore
    FREE
    Open to the Public
  • A Celebration of the Science and Technology of DSP

    Date: 
    Wed, 03/10/2010 - 5:15pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar

    A Celebration of the Science and Technology of DSP
    Ronald W. Schafer
    Multimedia Communication and Networking Lab
    Hewlett-Packard Laboratories
    Palo Alto, CA 94304

    Open to the Public
  • The Nonlinear String Wave Equation: Properties, Approximations and Resolution. Application to the Piano

    Date: 
    Wed, 03/03/2010 - 5:15pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar

    The Nonlinear String Wave Equation
    Antoine Chaigne

    Open to the Public
  • Dynamics Modeling in Sound Mixtures

    Date: 
    Wed, 02/24/2010 - 5:15pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar
    Dynamics Modeling in Sound Mixtures

    Gautham J. Mysore

    For CCRMA Users Only