| Recommended semester: 4th -7th semester |
| Scope and form: Lectures and project work in the laboratory. |
| Evaluation: Written exam and approval of reports
|
| Examination: 13-scale |
| Previous course: 51243. 51447 |
| Prerequisites: 51001 / 31200 / 64004 |
| No credit points with: 51243, 51447 |
| Aim: To introduce the students to theories and methods in room acoustics and sound insulation and thereby provide a background for designing buildings with a satisfactory acoustic environment. This means that the buildings should be constructed in such a way that external noise is not a problem and that the geometry and surfaces of rooms should be designed to optimise the acoustical conditions according to the uses of the rooms. |
| Contents: The reflection and absorption of sound. Panel absorbers, resonance absorbers and porous absorbers. Theoretical and subjective room acoustics. Acoustics in new and old theatres, churches and concert halls. Room acoustic parameters. Designing of rooms for speech and music.The use of scale models and computer models as design tools. Variation of room acoustics by physical changes and by electronic means. Sound radiation from vibrations in walls. The insulation of buildings from external noise. Statistical energy analysis (SEA). Structureborne sound. Doors and windows. Floating floors and impact sound insulation. Sound propagation in building constructions. Sound insulation of older buildings and of modern lightweight constructions. Building acoustic test measurements. About half the time is used on a building project in which the acoustical conditions are solved by using the knowledge gathered during the course. |
| Remarks: It is desirable that the students have a basic knowledge of acoustics and some knowledge of building techniques. |
Contact: Jens Holger Rindel, building 352, (+45) 4525 3934, jhr@oersted.dtu.dk
Anders Gade, building 352, (+45) 4525 3953, acg@oersted.dtu.dk |
| Department: 031 Ørsted DTU |
| Course URL: http://www.oersted.dtu.dk/31240 |
| Keywords: room acoustics, sound absorption, room acoustic models, sound insulation, acoustic design |
| Updated: 15-03-2001 |
