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Does Poor Transmission Quality Impair Memory of Fully Intelligible Telephone Speech?
LOCATION: Auditorium 2, TEL, Ernst-Reuter-Platz 7, 20th floor
Date/Time: 13.01.2014, 14:15-15:00
SPEAKER: Arne Nykänen, Luleå University of Technology
As telephone, radio and TV broadcasting migrates to digital media important decisions about transmission rates and coding techniques need to be made. Several studies have shown that memory of fully intelligible speech decreases under poor listening conditions, e.g. caused by background noise, high levels of reverberation or digital coding at low bit rates. This decrease of ability to recall content does not always match preference ratings. Understanding the mechanisms underlying this impairment of memory is essential for making informed decisions on coding techniques and requirements for telecommunication systems. I will give a review of studies made at Luleå University of Technology and University of Gävle on this topic. I will also present plans and proposals for new research projects where we will study the effects of distortions of digitally coded speech on memory and decision making.
Arne Nykänen is Senior Lecturer in Engineering Acoustics at Luleå University of Technology (LTU). He studied Engineering Physics at the University of Umeå and received the MSc degree in 1997. From 1997 to 2001 he worked with electronics design for alarm communication systems at Fält Elektronik in Sweden. In 2001 he started PhD studies at LTU and received the Doctor of Engineering degree in 2008 with a thesis titled “Methods for Product Sound Design”. Currently he is doing research and teaching within design of signal sounds and multisensory signals, interior sounds in electric cars and psychoacoustics for audio engineering and telecommunication.
HOST: Sebastian Arndt