Sound absorption
Image
Graphic:
If sound waves strike an obstacle with a corresponding material structure, they are absorbed, i.e. the entire mechanical energy of the sound is converted into thermal energy.
Type of media:
Image (58.0 kByte)
Last update:
2018-04-22
License:
This medium is made available under a CC BY-SA 4.0 international license.
What does this mean?
How to reference this medium
This medium is made available under a CC BY-SA 4.0 international license.
What does this mean?
How to reference this medium
Description:
This effect is enhanced by sound barrier walls made of porous materials. By means of multireflection and dispersion, the passage of sound in such materials is extended considerably. The sound peters out.
Information and ideas:
Reference to students' everyday world: silence after snowfall.
Can be checked with the students in an experiment.
Relevant for teaching:
Sound/acoustics: parameters
Vibrations and waves
Information and ideas:
Reference to students' everyday world: silence after snowfall.
Can be checked with the students in an experiment.
Relevant for teaching:
Sound/acoustics: parameters
Vibrations and waves
Related media:
There are no other media directly related to this file.
Learning resource type:
Illustration
Subjects:
Physics
Grade levels:
Grade 5 to 6; Grade 7 to 9; Grade 10 to 13
School types:
Middle/high school; Vocational training
Keywords:
Sound; Wave (physics); Sound (basic phenomenon); Sound propagation; Sound wave
Bibliography:
Siemens Stiftung Media Portal
Author:
MediaHouse GmbH
Rights holder:
© Siemens Stiftung 2018