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.

Available in: English, Spanish (CREA), German

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

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

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:

Sound absorption

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.

Available on CREA

Stay up-to-date!

Sound absorption

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.

Available on CREA

Stay up-to-date!

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Stay up-to-date!

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.