1 / 6

What is sound?

What is sound?. February 19, 2014. How do speakers make sound?. For any sound to be made matter has to be vibrated (called the medium) As matter is vibrated it is moved back and forth producing a wave What kind? Longitudinal, consisting of compressions and rarefactions.

geri
Download Presentation

What is sound?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. What is sound? February 19, 2014

  2. How do speakers make sound? • For any sound to be made matter has to be vibrated (called the medium) • As matter is vibrated it is moved back and forth producing a wave • What kind? Longitudinal, consisting of compressions and rarefactions

  3. But what about the speaker? • Speakers take electrical signals and convert them into vibrations causing the speaker to move forward and then backward very quickly • This forward and back motion causes longitudinal waves to be produced • Do the vibrations cause air to be moved? • No, if true loud speakers would blow you down

  4. Does sound travel the same way through all matter? • No, depending on how close the matter’s particles are the faster or slower the sound travels • Ex. Air – 331 m/s Water – 1,482 m/s Steel – 5,200 m/s

  5. What about pitch and frequency? • The pitch of sound is a measure of how high or low a sound is perceived to be • This depends on how many waves pass in a given amount of time – frequency • So, the higher the pitch, the higher the frequency the lower the pitch, the lower the frequency

  6. Are softer sounds different from louder sounds? • Yes, and no Yes, they have the same pitch No, they have different amplitude Amplitude – the distance from the resting position to the crest or trough the higher the amplitude the louder the sound

More Related