lecture15

# lecture15 - Combination of tones(Road to discuss harmony 1...

This preview shows pages 1–3. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Combination of tones (Road to discuss harmony) 1. Linear superposition • If two driving forces are applied simultaneously, the response will be the sum of the responses to the driving forces individually. • For instance: doubling the driving force doubles the response. • In linear systems independent signals do not influence each other. ) , ( ) , ( ) , ( 2 1 t r t r t r ψ ψ ψ + = Linear addition of two sound waves: Linear systems (examples): Loudspeakers, microphones and amplifiers should be linear to some extent. Is ear a linear system? 2. Interference (review) Interference – combination of waves (an interaction of two or more waves arriving at the same place) Important : principle of linear superposition: (a) If the interfering waves add up so that they reinforce each other, the total wave is larger; this is called “constructive interference ”. (b) If the interfering waves add up so that they cancel each other, the total wave is smaller (or even zero); this is called “destructive interference...
View Full Document

{[ snackBarMessage ]}

### Page1 / 8

lecture15 - Combination of tones(Road to discuss harmony 1...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online