Several members of CAHR will be presenting their work at the Acoustics 2012 Hong Kong conference. This conference, taking place from May 13-18, is a joint meeting of four societies: 163rd meeting of the Acoustical Society of America, the 8th meeting of the of Acoustical Society of China, the 11th Western Pacific Acoustics Conference, and the Hong Kong Institute of Acoustics.
The ability to perceptually separate acoustic sources and focus one’s attention on a single source at a time is essential for our ability to use acoustic information. In his talk, Simon Christiansen will present an auditory stream segregation model he has developed as part of his PhD. Based on a physiologically inspired model of human auditory processing, his model is able to quantitatively account for a wide range of classical streaming phenomena
The ability to predict speech intelligibility in a wide variety of conditions is important for the design of products (e.g., hearing aids, phones) and environments (e.g., buildings, classrooms, public transit) to ensure successful communication. As part of his PhD work, Søren Jørgensen has developed a model that is able to accurately predict speech intelligibility in a wider range of conditions than previously proposed models. In his talk, he will present a recent modification to his model that accounts for fluctuating noise and allows for more accurate predictions in complex environments.
The role of temporal vs. place coding in the determination of pitch remains a topic of debate in hearing science. In his poster presentation, Sébastien Santurette presents some of his work suggesting that the assumptions made in previous pitch studies may need to be reconsidered.
How do we know how far away a sound source is? As part of her PhD work, Jasmina Catic has examined how reverberation, the echoes of sound off walls and objects, alters interaural time and level differences (ITD and ILDs), acoustics cues that are normally associated with how we determine the direction of a sound source. In her talk, she will present results from an experiment where she investigated the perceptual consequences of altering the statistical distribution of these cues.
Details of talks and posters presented by CAHR researchers (in bold):
Simon Krogholt Christiansen, Morten Løve Jepsen, and Torsten Dau, “A physiologically inspired model of auditory stream segregation based on a temporal coherence analysis”. Talk 1aPP8 on Monday, May 14.
Søren Jørgensen and Torsten Dau, “Prediction of speech masking release for fluctuating interferers based on the envelope power signal-to-noise ratio.” Talk 2pPP8 on Tuesday, May 15.
Sé́bastien Santurette, Torsten Dau, and Andrew J. Oxenham, “High-frequency complex pitch: a search for temporal cues and for a role of spectral indices.” Poster 5aPP23 on Friday, May 18.
Jasmina Catic, Sebastien Santurette, Torsten Dau, and Jö̈rg Buchholz, “Effects of interaural level differences on the externalization of sound” Talk 5pAAb1 on Friday, May 18.