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Low Bit-rate Coded Speech Intelligibility Tested with Parallel Task

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A speech intelligibility test in realistic environments has been designed and performed deploying 51 subjects. A single set of speech samples distorted by various background noises and low bit-rate coding techniques has been used - without and with additional (parallel) psychomotor tasks. The addition of psychomotor tasks to the test simulates realistic environments. The differences in intelligibility test results between standard laboratory and parallel task test methodology were identified. Overall, the intelligibility of regular tests was mainly higher than for tests with a parallel task. Intelligibility results of certain samples have been found counterintuitive, which is possibly explained by a different mode of thinking under parallel task conditions.
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Document Type: Research Article

Publication date: 01 July 2018

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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