Reflection, Refraction, and Difraction
Reflection
- it is the rebound of sound and can be after or before 0.1 seconds
-2 types of reflection
-Echo occurs after 0.1 seconds
- Reverberation occurs before 0.1 seconds
- When a sound reflects at an angle, the sound bounces back at the same angle at which it occured.
-Example in nature;
- A moose uses its antlers to gather the reflected sound telling it what is in its surrounding.
Refraction
- energy's change in direction when it encounters a different medium
- Snell's Law: Sin angle 1 = Velocity 1
Sin angle 2 Velocity 2
- Snell's Law can represent refraction in different mediums by allowing us to find the angle at which the sound "breaks off" and goes at a different angle from which it first came in.
Difraction
- it helps the sound bend around an obstacle
- Low frequencies are better than high frequencies when it comes to being able to diffract around obstacles or through openings. Low frequencies have longer waves allowing for the waves to not be effected forever and it can easily slip through openings and around objects. High frequencies have shorter waves having a more direct path .
- it is the rebound of sound and can be after or before 0.1 seconds
-2 types of reflection
-Echo occurs after 0.1 seconds
- Reverberation occurs before 0.1 seconds
- When a sound reflects at an angle, the sound bounces back at the same angle at which it occured.
-Example in nature;
- A moose uses its antlers to gather the reflected sound telling it what is in its surrounding.
Refraction
- energy's change in direction when it encounters a different medium
- Snell's Law: Sin angle 1 = Velocity 1
Sin angle 2 Velocity 2
- Snell's Law can represent refraction in different mediums by allowing us to find the angle at which the sound "breaks off" and goes at a different angle from which it first came in.
Difraction
- it helps the sound bend around an obstacle
- Low frequencies are better than high frequencies when it comes to being able to diffract around obstacles or through openings. Low frequencies have longer waves allowing for the waves to not be effected forever and it can easily slip through openings and around objects. High frequencies have shorter waves having a more direct path .