Hearing Seminars

CCRMA hosts a weekly Hearing seminar. All areas related to perception are discussed, but the group emphasizes topics that will help us understand how the auditory system works. Speakers are drawn from the group and visitors to the Stanford area. Most attendees are graduate students, faculty, or local researchers interested in psychology, music, engineering, neurophysiology, and linguistics. Meetings are usually from 11AM to 12:30 (or so, depending on questions) on Friday mornings in the CCRMA Seminar Room.

The current schedule is announced via a mailing list. To be added to the mailing list, send email to hearing-seminar-request@ccrma.stanford.edu.  If you have any questions, please contact Malcolm Slaney at hearing-seminar-admin@ccrma.stanford.edu.

Recent Hearing Seminars

  • Jens Ahrens on The Psychoacoustics of Synthetic Sound Fields

    Date: 
    Fri, 10/18/2013 - 11:00am - 12:30pm
    Location: 
    CCRMA Seminar room
    Event Type: 
    Hearing Seminar
    The Psychoacoustics of Synthetic Sound Fields Abstract: Sound fields that are evoked by electro-acoustic systems can differ substantially from sound fields that arise in nature. This is mainly due to the circumstance that with electro-acoustic systems usually two or more transducers radiate coherent signals simultaneously and therefore create sound fields with complicated physical structures. In this talk, we will summarize the current state of research of the psychoacoustic mechanisms that govern the perception of such synthetic sound fields. We will cover traditional Stereophony as well as methods like Wave Field Synthesis that employ large-scale loudspeaker arrays, and a lot in between.
    FREE
    Open to the Public
  • Decoding Imagined Sounds with EEG

    Date: 
    Fri, 10/04/2013 - 11:00am - 12:30pm
    Location: 
    Seminar Room
    Event Type: 
    Hearing Seminar
    I’d like to talk about some EEG experiments we did at the Telluride Neuromorphic Engineering Workshop this last summer. We were interested in seeing whether we could measure and characterize the response to imagined sounds. This is a form of top-down signal, important for how we understand the complicated world around us. I’ll talk about the motivation for our work, the experiment, the preliminary results, and where we go next.

    This is very preliminary work, no final results, so I expect this will evolve into a general discussion of EEG and auditory perception.

    FREE
    Open to the Public
  • Resonance in the Perception of Musical Pulse

    Date: 
    Wed, 08/14/2013 - 2:00pm - 3:30pm
    Location: 
    CCRMA Seminar Room
    Event Type: 
    Hearing Seminar

    Resonance in the Perception of Musical Pulse II: Developments in Childhood

    Leon van Noorden, Institute for Psycho-acoustics and Electronic Music (IPEM) Ghent University

    Keywords: resonance for musical pulse, synchronisation to the beat of music, children, social aspects of tapping together, arousal

    FREE
    Open to the Public
  • Pierre Divenyi on Phonetic Restoration

    Date: 
    Fri, 04/26/2013 - 1:15pm - 2:30pm
    Location: 
    CCRMA Seminar Room
    Event Type: 
    Hearing Seminar

        aaaaaaaaa BUZZ aaaaaaaaaaaaa

     

    If the buzz is loud enough, people will hear a continuous vowel sound. This is known as phonetic restoration.  Al Bregman (author of the tome Auditory Scene Analysis) says that this is an example of old-plus-new. I suspect it is an example of top-down influences.  All examples of the same process that help us understand the auditory world around us.

     

    FREE
    Open to the Public
  • Claudia Freigang:Behavioral and Electrophysiological Evidence for Impaired Central Auditory Space Processing in Older Adults

    Date: 
    Fri, 04/12/2013 - 1:15pm - 2:30pm
    Location: 
    Seminar Room, The Knoll
    Event Type: 
    Hearing Seminar
    Behavioral and Electrophysiological Evidence for Impaired Central Auditory Space Processing in Older Adults Claudia Freigang University of Leipzig Aging is associated with a decline in hearing sensitivity as well as substantial changes in the perception of auditory objects – though both phenomena must not occur jointly. Most prominently, older adults show difficulties in understanding speech in challenging acoustic environments. As a part of speech perception, location of sound sources have to be processed in order to assign auditory objects (i.e. speakers) to distinct spatial positions and also to differentiate multiple sound sources (for instance, multiple speakers and transient background sounds). There is evidence that localization performance is impaired in older adults.
    FREE
    Open to the Public
  • Jason Bishop on the perception and processing of prosody

    Date: 
    Fri, 03/15/2013 - 1:15pm - 2:30pm
    Location: 
    CCRMA Seminar Room
    Event Type: 
    Hearing Seminar
    Prosody conveys information about emotion and the intention of the speaker.  In this way it is much like music---conveying information that is not in the words. We know its there, we know that babies understand it before they understand the words, but we don't really know how it's perceived. And arguably, music is mostly prosody, so this is really relevant to all you music types too!!!
    FREE
    Open to the Public
  • Laurel Trainor @ CCRMA Hearing Seminar - Auditory Development in Infants: From Perceiving Music to Social Behavior

    Date: 
    Fri, 03/08/2013 - 1:15pm - 2:15pm
    Location: 
    Knoll 3F seminar room
    Event Type: 
    Hearing Seminar
    I will present behavioural and EEG studies showing that infants and young children acquire sensitivity to the pitch and rhythmic structures of the music in their environment without formal training, just as they learn the language in their environment.  I will then discuss the effects of musical training on brain and behaviour and show that such effects can be demonstrated in the first year after birth.  Next I will examine rhythm and the human ability to entrain movement to an auditory beat whether with tapping a finger or dancing with full body movement.  I will present data showing that auditory and motor systems interact in the brain and that these interactions are present early in development.  Finally, I will show that when two people
    FREE
    Open to the Public
  • Michael Vorländer - Acoustic Virtual Reality for Perception Research

    Date: 
    Fri, 03/01/2013 - 1:15pm - 2:30pm
    Location: 
    Seminar Room
    Event Type: 
    Hearing Seminar
     

    We've come a long way since the days when we thought that stereo speakers provided amazing sound playback.  We've out grown 5.1 and even more.

     

    Just what does it take to accurately reproduce a sound field?  Which effects are important?  Why? When do the issues matter?

     

    Michael Vorländer is an acoustics professor from Aachen Germany and is finishing up his visit at CCRMA.  We'll have a real-live discussion, with hyper-realistic 3-d audio, all in real time.

     

    Who: Michael Vorländer (Aachen)

    FREE
    Open to the Public
  • Brain oscillations underlying sensory binding and perception

    Date: 
    Fri, 02/22/2013 - 1:15pm - 2:30pm
    Location: 
    CCRMA Seminar Room
    Event Type: 
    Hearing Seminar

    Just how is information represented in the brain?  We're all used to rate codes---a neuron fires when it sees something that excites it.  The rate of firing is proportional to how good a match the input is to to the neuron's model. But there is strong evidence that higher-level concepts are encoded with some sort of oscillator, perhaps around 40Hz.  Bernhard will be talking about how MEG and EEG can be used to measure this activity.  Do brain oscillations explain how we group sounds as we parse the auditory world?

     

    Who: Bernhard Ross (Rotman Research Institute in Toronto)

    FREE
    Open to the Public
  • Joel Snyder on Auditory and Visual Rhythm Perception

    Date: 
    Fri, 02/01/2013 - 1:15pm - 2:30pm
    Location: 
    Seminar Room
    Event Type: 
    Hearing Seminar

    We've got rhythm!  But how?

    I'm pleased to introduce Joel Snyder to the CCRMA community. Joel is studying the mechanisms we use to track rhythm. We can bop to either a visual or an auditory rhythm.  But do the two modalities use the same mechanism, or do they track their rhythms separately? How do the clock(s) work?

    Who: Joel Snyder (UNLV)

    FREE
    Open to the Public