Sound emission at the loudspeaker
Video
Video (00:11 minutes):
The visibly vibrating diaphragm in the loudspeaker obviously transmits its movement onto the air as sound waves.
Available in:
English, German
Type of media:
Video (2.2 MByte)
Last update:
2018-08-07
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:
The principle of sound production and propagation as sound wave in the air can be recognized clearly with the example of the diaphragm of a loudspeaker. By the way, only the lowest–pitched tones are visible. With medium and high-pitched tones the movements of the diaphragm are so fast that they are invisible.
Information and ideas:
Suitable for demonstration purposes but also good for self-study on the part of the students.
Idea: show the film without sound to begin with. The students should then guess what sort of noise/sound it might be.
Relevant for teaching:
Acoustic phenomena
Sound/acoustics: parameters
Communication and understanding
Vibrations and waves
Information and ideas:
Suitable for demonstration purposes but also good for self-study on the part of the students.
Idea: show the film without sound to begin with. The students should then guess what sort of noise/sound it might be.
Relevant for teaching:
Acoustic phenomena
Sound/acoustics: parameters
Communication and understanding
Vibrations and waves
Related media:
There are no other media directly related to this file.
Learning resource type:
Illustration
Subjects:
Music; Personal, social and health education (PSHE); Physics; Technology
Grade levels:
Grade 1 to 4; Grade 5 to 6; Grade 7 to 9; Grade 10 to 13
School types:
Elementary school; Middle/high school; Vocational training
Keywords:
Electroacoustics; Sound; Electroacoustics; Sound production; Sound propagation; Sound transduction
Bibliography:
Siemens Stiftung Media Portal
Author:
MediaHouse GmbH
Rights holder:
© Siemens Stiftung 2018