"Music Sound" Sound Phenomenon PPT Courseware 2

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"Music Sound" Sound Phenomenon PPT Courseware 2

1. Tone

What is pitch?

Conclusion: Pitch - refers to the pitch of the musical sound.

What does the pitch have to do with pitch?

Experimental exploration:

Experiment 1: Take a plastic ruler and let it pass across the teeth of the wooden comb, one time faster and one time slower. Can you tell the difference in the sounds they make?

Conclusion: The pitch of the sound is determined by the frequency of the sound source's vibration.

1. The faster the vibration, the higher the frequency, and the higher the pitch.

2. The slower the vibration, the smaller the frequency, and the lower the pitch.

1. Compared with bees and butterflies, which one has a higher pitch when flying? Why?

Answer: The bee's pitch is high because it vibrates quickly.

2. "Tenor" and "Alto", what do the "treble" and "bass" here refer to?

Answer: Here “treble” and “bass” refer to the pitch respectively.

2. Loudness

What is loudness?

Conclusion: The size of sound that the human ear can perceive is called loudness. Also called volume.

What factors determine the loudness?

Exploration Experiment 1: Student experiment (cooperation between two persons): Tighten a rubber band, gently toggle it back and forth twice, and listen to the sound it makes by dialing it again. Does the change in rubber band make any difference?

Exploration Experiment 2: By changing the current flowing through the loudspeaker, students are allowed to observe the beating changes of the foam plastic on the loudspeaker and listen to the changes in sound at the same time. Inspire students to get the relationship between loudness and amplitude on their own.

Exploration Experiment 3: Tap the tuning fork gently so that the students in the front row can hear the sound. Students in the back row were barely audible, indicating that loudness is also related to distance from the sound source.

in conclusion

1. Amplitude determines loudness. The greater the amplitude, the greater the loudness

2. Loudness is also related to the distance from the sound source.

3. Tone

1. Also called frets, different sound emitters have different timbres.

2. Tone is the basis for identifying different sound emitters

practise:

1. "Calling loudly" and "whispering in a low voice", the "high and low" here refers to ( )

A. Pitch B. Loudness

C. The sound quality is good or bad. D. None of them are correct.

2. Comparing the bass who sings loudly with the soprano who sings softly for him ( )

A. The bass has a higher pitch and louder sound.

B. The bass has a lower pitch and less loudness.

C. The bass has a lower pitch and a higher loudness.

3. People can distinguish the sounds of the huqin, piano, and flute because their sounds are ____ different.

4. Listen to the voice to identify the person: This is the voice of ____; this is the voice of ____. We distinguish their voices based on __________.

A. Chairman Mao B. Premier Zhou

summary

There are three characteristics of musical sound: pitch, loudness, and timbre.

1. Tone

Pitch: refers to the pitch of the musical sound

Determining factor: Determined by the vibration frequency of the sound source.

2. Loudness

Loudness: The size of sound that can be felt by the human ear, also called volume.

determining factors:

1. Loudness is related to the amplitude of the sound source vibration.

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

3. Tone

Timbre: Sound characteristics, called timbre, also called timbre.

Homework

Someone can play beautiful music by tapping cups with different types of water with chopsticks. Do you know why?

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For more information about the "Acoustic Phenomenon and Music" PPT courseware, please click on the "Acoustic Phenomenon and Music ppt" tab.

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Update Time: 2024-10-03

This template belongs to Physics courseware Beijing Normal University eighth grade physics volume one industry PPT template

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