Sökning: "Teknisk akustik"
Visar resultat 31 - 35 av 213 avhandlingar innehållade orden Teknisk akustik.
31. Study and modelling of lightweight floor structure regarding its acoustic properties
Sammanfattning : Lightweight floor structure is widely used in building industries and to have better sound insulation builders come up with different ways of construction. Depending on the construction the floor structure could either be coupled (floor and ceiling coupled by beams) or decoupled (no mechanical connection between floor and ceiling). LÄS MER
32. Topology optimization of transitional flows
Sammanfattning : This thesis is concerned with the application of topology optimization in thedesign of structures that control fluids. A framework is developed in the high-order Spectral Element Method (SEM) code Nek5000, extending Nek5000 fromits original capabilities, performing Direct Numerical Simulations (DNS), toperforming density-based topology optimization. LÄS MER
33. Methods for product sound design
Sammanfattning : Product sound design has received much attention in recent years. This has created a need to develop and validate tools for developing product sound specifications. LÄS MER
34. Methods for specification of sound quality applied to saxophone sound
Sammanfattning : Product specifications that include descriptors of sound qualities are most helpful when a description contains adequate detail and utilises understandable wording. Good specifications require that any descriptions used are familiar to users and that these descriptions are interpretable as acoustical quantities. LÄS MER
35. Communication acoustics in classroom environments : on the use of assistive listening devices
Sammanfattning : 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. LÄS MER