1 / 6

13.1 Sound

13.1 Sound. Chapter 13: Sound and Music. Human Ear. Label : -External Auditory Canal (label it “ear canal”) -Tympanic Membrane (label it “eardrum”) - Malleus (label it “inner ear bones”) -Cochlea You do not need to label anything else!. How do we hear?.

avi
Download Presentation

13.1 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. 13.1 Sound Chapter 13: Sound and Music

  2. Human Ear Label: -External Auditory Canal (label it “ear canal”) -Tympanic Membrane (label it “eardrum”) -Malleus (label it “inner ear bones”) -Cochlea You do not need to label anything else!

  3. How do we hear? • We get our sense of hearing from the cochlea, a tiny fluid-filled organ in your inner ear • Inner ear has two important functions • Provide our sense of hearing • Provide our sense of balance

  4. How do we hear? • Eardrum vibrates in response to sound waves • The 3 delicate bones of the inner ear transmit vibrations to the cochlea • Fluid in the cochlea vibrates, sending waves that travel up the spiraled shape • Nerves near the beginning of the spiral response to longer wavelength (low frequency sounds) • Nerves at the end of the spiral respond to shorter wavelength (high frequency sounds)

  5. Range of Hearing • Human hearing: 20Hz – 20,000Hz • Animals can hear higher frequencies because they have more sensitive structures in their inner ear • People lose their range of frequencies as they age Mosquito ringtone • Tiny hairs shake when the fluid in the cochlea is vibrated • Listening to loud sounds can cause the hairs to break, and you will lose your hearing at a specific frequency

  6. Ultrasound • Ultrasound has a frequency MUCH higher than humans can hear (100,000Hz) • These waves can pass through the human body easily • Medical ultrasounds use refraction and reflection to create images Video

More Related