SOUND WAVE PART 2

Communication using sound Waves

Human use speech to communicate.

Dogs bark to communicate.

Humans and dogs both use sound to communicate.

Sound Wave and Radio

(Posted in the google classroom for practice)

https://wordwall.net/resource/85996177

Analog Signal

An analog signal carries information by copying an original sound.

• It travels through the air continuously

• It can pick up unwanted information, which is heard as "noise".
  
  

Digital Signal

A digital signal carries information by changing original sounds into numbers.

• It turns sound waves into a stream of zeroes and ones.

• It makes sound easier to store, with faster transmission and less noise.
  
  

Classify the correct descriptions of analog and digital signal (posted in the google classroom for practice)

https://wordwall.net/resource/85996177

​Headphones and other devices make use of sound waves to block out and cancel noise.

How sound waves are cancelled?

Sound waves are canceled by creating waves that with unwanted sound waves.

• When sound waves of the same meet where the crests of one wave overlap with the trough of another wave, the waves cancel out each other. Using Sound interfere amplitude