"Characteristics of Sound" Sound Phenomenon PPT Courseware 6

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"Characteristics of Sound" Sound Phenomenon PPT Courseware 6

our feelings and feelings

The sounds we hear can be said to vary widely;

The sound of the trumpet is loud and straight;

The sound of the violin is soft and delicate;

The sound of the cello is steady and stretched...

They are strong or weak, high or low, some rich and some crisp. After listening to this music, we will be immersed in the enjoyment of beauty.

What should we do if we form a small band and prepare to play an unfamiliar piece of music?

First, we should find the music score of the piece, which is composed of some symbols that can reflect the characteristics of the music.

So, what are the basic characteristics of musical tones or sounds?

That's what you'll learn in this lesson.

loudness

In physics, loudness is used to describe the size (strength) of sound.

What factors does loudness depend on?

What factors does loudness depend on?

Demo:

How to make the drum sound louder?

Hit the drum head harder.

think:

What is the relationship between loudness and drum head vibration?

How to display drumhead vibration?

Speaker bounce

The amplitude of the vibration of an object is called amplitude.

Observe the water jumping when the speaker produces sound. Under what circumstances does the water jump high? Under what circumstances does it jump low?

It shows that the loudness of sound is determined by the amplitude of vibration of the sound source.

Loudness is related to the distance between the person and the sound source.

When the amplitude is the same, the farther away from the sound source, the more dispersed the sound is, and the smaller the loudness of the sound is.

Loudness is related to the distance between the person and the sound source.

When the amplitude is the same, the farther away from the sound source, the more dispersed the sound is, and the smaller the loudness of the sound is.

What factors determine the pitch?

frequency

Physical meaning: describes how fast an object vibrates

Definition: The number of times an object vibrates per second

Letter: f

Unit: Hertz Hz

Guess what makes them sound?

Why can we distinguish the sounds made by different objects?

Because the quality of the sound produced by different instruments is different.

Timbre represents the quality of sound.

Timbre is related to the material and structure of the sound source.

Class exercises

1. Electronic musical instruments can imitate the sounds produced by various musical instruments. To imitate them realistically, the key is to require that the sound produced by the electronic instruments be as consistent as possible with the sound produced by the instrument to be imitated.

A. Tone b. frequency

C. Loudness D. timbre

2. At the Young Singer Grand Prix, a young male singer is singing loudly, and another young female singer is singing softly for him. Whose pitch is higher? Who is louder?

Answer: Female singers have higher pitches and male singers have louder voices.

3． Which of the following underlined words represents which characteristic of sound?

(1) This song is too high, I can’t sing it ()

(2) Do not make loud noises during gatherings ()

(3) No small talk is allowed in class ()

(4) When you hear the singing, you know it’s the eldest sister, not the second sister ( )

(５) So-and-so’s voice is very nice, and so-and-so’s voice is ugly ( )

4. When people speak loudly to a distance, they often put their hands around their mouth to form a trumpet shape. This is for ( )

A. Raise your speaking pitch

B. Change the timbre of speech

C. Reduce dispersion and increase the loudness of sound

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"Characteristics of Sound" Sound Phenomenon PPT Courseware 11:

"Characteristics of Sound" Acoustic Phenomenon PPT Courseware 11 Learning Objectives 1. I want to know what pitch and loudness are and be able to distinguish between them. Through exploration, I can understand the relationship between pitch and frequency, and the relationship between loudness and vibration radiation. I will initially use the control variable method to design experiments.

"Characteristics of Sound" Sound Phenomenon PPT Courseware 10:

"Characteristics of Sound" Acoustic Phenomenon PPT Courseware 10 Teaching Objectives 1. Understand the characteristics of sound 2. Know that pitch is related to the frequency of the sound emitter, and loudness is related to the amplitude of the sound emitter 3. Pay attention to the rigor of scientific terminology 4. Different sound emitters emit The timbre of the music is different from the same pitch...

"Characteristics of Sound" Sound Phenomenon PPT Courseware 9:

"Characteristics of Sound" Acoustic Phenomenon PPT Courseware 9 Learning Objectives 1. Understand the characteristics of sound; 2. Know that the pitch of sound is related to the frequency of the sound emitter; 3. Know that the loudness of sound is related to the amplitude of the sound emitter; 4. Know the different sounds The timbre of the sound produced by the body is different. Know...

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Update Time: 2024-10-03

This template belongs to Physics courseware People's Education Edition Physics for Grade 8, Volume 1 industry PPT template

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