Search for dissertations about: "headphone"
Found 2 swedish dissertations containing the word headphone.
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1. Sound quality evaluation of heavy-duty engines in free field conditions
Abstract : Annoyance response to vehicle noise is commonly reported. The impact reduction measures must therefore be measured scientifically. A scientific system for describing and defining annoyance is therefore required. There is furthermore a need to reduce the annoying components of the sound of vehicles. READ MORE
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2. Communication acoustics in classroom environments : on the use of assistive listening devices
Abstract : Assistive listening devices (ALDs) are used in classrooms to assist communication for students with hearing loss. An ALD, a system of external microphones, transmits sound directly to the students' hearing aids. The signal is coupled to the hearing aid using a radio frequency (FM) or an induction loop (IL) system. READ MORE