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

  • Source Separation Tutorial Mini-Series I: Classical Speech Denoising and Enhancement

    Date: 
    Tue, 04/02/2013 - 5:30pm - 7:30pm
    Location: 
    CCRMA Classroom
    Event Type: 
    DSP Seminar

    Abstract: To start off a series of three tutorial-style dsp seminars on current single-channel source separation methods, the first talk will introduce the topic of classical methods used for speech enhancement. We will cover denoising methods such as spectral subtraction, wiener filters, and probabilistic estimators (if time permits). This will give an overview of the large range of literature on reducing background noise from speech.

    FREE
    Open to the Public
  • POSTPONED! Source Separation Tutorial Mini-Series I: Classical Speech Denoising and Enhancement

    Date: 
    Tue, 02/19/2013 - 5:30pm - 7:00pm
    Location: 
    CCRMA Seminar Room [Knoll 315]
    Event Type: 
    DSP Seminar
    This event has been postponed.  An announcement will be made when a new date is announced.
    FREE
    Open to the Public
  • Audio Applications of Matrix Completion

    Date: 
    Tue, 11/27/2012 - 5:30pm - 7:00pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar

    "Audio Applications of Matrix Completion" --- Statistics PhD student Dennis Sun

    FREE
    Open to the Public
  • Clustering and Synchronizing Multi-Camera Video via Audio Fingerprinting

    Date: 
    Tue, 11/13/2012 - 5:30pm - 6:50pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar
    A method to both identify and synchronize multiple videos of the same event within a large collections of videos and/or audio files will be discussed. Landmark-based audio fingerprinting is used to match multiple recordings of the same event together and time-synchronize each file within the groups. Compared to prior work, we offer improvements towards event identification and a new synchronization refinement method that resolves inconsistent estimates and allows non-overlapping content to be synchronized within larger groups of recordings.
    FREE
    Open to the Public
  • User-Guided Variable-Rate Time-Stretching via Stiffness Control

    Date: 
    Tue, 11/06/2012 - 5:30pm - 6:50pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar
    User-Guided Variable-Rate Time-Stretching via Stiffness Control
    CCRMA PhD students Nick Bryan & Jorge Herrera
    FREE
    Open to the Public
  • Bowed String Simulation Combining Digital Waveguides and Finite-Difference Time-Domain Frameworks

    Date: 
    Tue, 10/30/2012 - 5:30pm - 6:50pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar
    In light of the promising results obtained by driving a low-complexity Digital Waveguide (DW) violin model with synthetic bowing gestures, we are currently exploring the possibilities of combining DW and Finite-Difference Time-Domain (FDTD) frameworks to construct highly realistic physical models of string quartet instruments. Departing from state-of-the-art bowed string simulation paradigms, we extend previous approaches by combining a finite-width bow-string interaction model and a dynamic friction model based on simulating heat diffusion along the width of the bow.
    FREE
    Open to the Public
  • Nonlinear Time-Frequency Processing for Spatial Audio Reproduction

    Date: 
    Thu, 10/25/2012 - 5:30pm - 6:50pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar
    This talk will consider the motivation and background of using non-linear time-frequency processing for spatial audio reproduction.  Directional Audio Coding (DirAC) will be reviewed in the talk, which analyzes in short time windows the sound spectrum together with direction and diffuseness in frequency bands of human hearing, and uses this information in synthesis. It has applications in capturing, coding and resynthesis of spatial sound, in teleconferencing, in directional filtering, and in virtual auditory environments.
    FREE
    Open to the Public
  • Digital Modeling of Bridge Driving-Point Admittances from Measurements on Instruments of the Violin Family

    Date: 
    Thu, 10/18/2012 - 5:30pm - 6:50pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar
    Be it to understand the physical implications of design choices by makers, or to simulate their behaviour by computer, measuring and studying bridge input admittances of violin-family instruments is not a new topic. In the contex of sound synthesis via physical modeling, a string termination at the bridge can be realized by designing a digital filter whose response resembles the admittance measurement. However, obtaining accurate admittance models as efficient, passive digital filters still remains a difficult task.
    FREE
    Open to the Public
  • Computational Analysis of Bowed-String Performance: From Motion Capture to (i) Sound Synthesis and (ii) Quantification of Interdependence in String Quartets

    Date: 
    Tue, 10/16/2012 - 5:30pm - 6:50pm
    Location: 
    CCRMA Classroom [Knoll 217]
    Event Type: 
    DSP Seminar
     Bowed strings are often regarded as among the most expressive musical instruments. The freedom that is available for the musician to continuously modulate input control parameters (e.g., bowing controls) when interpreting a piece constitutes an excellent opportunity to study instrumental performance. In this talk, we will cover some of our past and present work on computational analysis of bowed string performance. The talk will start by describing motion capture techniques used to acquire bowing control parameters from real performances.
    FREE
    Open to the Public
  • CCRMA Colloquium with Florent Berthaut - The immersive virtual musical orchestra

    Date: 
    Wed, 05/16/2012 - 5:15pm - 6:30pm
    Location: 
    CCRMA Classroom
    Event Type: 
    DSP Seminar
    The immersive virtual musical orchestra
    FREE
    Open to the Public