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Siemens Stiftung

Sound as aperiodic signal

A sound event without periodicity is a "sound".

A sound event with irregular (aperiodic) form of vibrations is described as sound. It is made up of many individual vibrations, the frequencies of which are not in integral relation to each other.
The rustling of paper or road traffic are examples.

Information and ideas:
Recording to make different sorts of sound clear (or for students to identify).
Further information regarding this sound sample is available as information sheet on the media portal of the Siemens Stiftung.

Relevant for teaching:
Sound/acoustics: parameters
Communication and understanding
Vibrations and waves
Acoustic phenomena

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