Combining Sound Waves

EQ: What happens when two or more sound waves interact?

Vocabulary

• Timbre – the quality of sound you hear– Blending of the fundamental tones and the

overtones making up the characteristic sound quality of a particular sound

– Trumpet versus violin playing the same notes give the sounds different timbres

EQ: What happens when two or more sound waves interact?

Vocabulary

• Music – a set of tones combined in a way that is pleasing to the ear.

• Three major groups of instruments: strings, brass and woodwinds, percussion

EQ: What happens when two or more sound waves

interact?

Vocabulary

• Noise – a mixture of sound waves that do not sound pleasing together. There is no pleasing timbre and no identifiable pitch

• Dissonance – songs that have tones with no musical relationship

EQ: What happens when two or more

sound waves interact?

Vocabulary

• Interference – when two or more sound waves interact. The amplitudes combine, causing the loudness of the sound to change– Constructive interference – louder sound– Destructive interference – softer sound

EQ: What happens when two or more sound waves interact?

Vocabulary

• Acoustics – how well sounds can be heard in a particular room

EQ: What happens when two or more sound waves interact?

Class Work and Homework

Fill In – What did I learn– Confused – Say

Read pages O 52 – O 59,

Answer questions 1-6, page O 59

Worksheet 2-3 from packet

EQ: What happens when two or more

sound waves interact?