What are the voices of human production and life?

The sounds in life are noise, singing, cicadas, etc. The normative use of noise is noise, and from a physiological point of view, any sound that interferes with people's rest, study and work, as well as the sound that people want to hear, that is, unwanted sound, is collectively referred to as noise. Noise pollution occurs when noise has an adverse effect on people and the surrounding environment.

Sound is a sound wave produced by the vibration of an object. It is a wave phenomenon that propagates through a medium (air or solid, liquid) and can be perceived by the auditory organs of humans or animals. An object that initially emits vibrations (vibrations) is called a sound source.

Sound travels in the form of waves that vibrate (vibrate). Sound is the motion formed by the propagation of sound waves through any medium. There are many sounds made by human production and life, the most common is the sound of speaking, there are coarse and soft voices, and so on.

There are also the sound of percussion instruments, machine movement, noise, ** sound, knocking on the door, etc.

Sound is a sound wave produced by the vibration of an object. It is a wave phenomenon that propagates through a medium (air or solid, liquid) and can be perceived by the auditory organs of humans or animals. An object that initially emits vibrations (vibrations) is called a sound source.

Sound travels in the form of waves that vibrate (vibrate). Sound is the motion formed by the propagation of sound waves through any medium.

When we stand on the mountain and shout, we will hear our echo, because in the process of propagation, the sound encounters such an obstacle and will come back and be heard by us again. When two sounds reach our ears, and the time difference is less than a second, we can't tell the difference.

Related information. In physics, sound is generated by the vibration of an object, and the object that is emitting sound is called the sound source. The number of times an object vibrates in one second is called frequency, and the unit is hertz, the letter Hz.

The human ear can hear the sound of 20 20000 Hz, and the most sensitive is the sound between 200 and 800 Hz.

Sound is a pressure wave: when a musical instrument is played, a door is slammed or a table is struck, their vibrations cause the medium-air molecules to vibrate rhythmically, causing the surrounding air to produce dense changes to form sparse longitudinal waves, which produce sound waves, and this phenomenon continues until the vibration disappears.

There are many sounds of human production and life, for example, human beings will have voices when they speak, as well as the sound of cars, factory work, the sound of machines, the noise of construction sites, etc., many of these are the sounds of production and life, as long as there is a sound in daily life, the sound of human production and life is emitted.

1.Noise from vehicles: Cars, trains, airplanes and other vehicles will make noise when driving or taking off and landing, which will have an impact on the surrounding environment and people's lives.

2.Noise from industrial equipment: Machines and equipment in factories, construction sites, and other production sites emit noise when they are running, and these noises can also have an impact on the surrounding environment and people's lives.

3.Crowd noise: When people gather in public places such as shopping malls, train stations, street bureaus, etc., they will make noisy noises that break the bridge, and these sounds will also affect the surrounding environment and people's lives.

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Examples of how people use sound in production and life are as follows:1** - Play with a variety of instruments and vocals to the ear and sound**.

2.Broadcast - Conveying information to the public through the spoken word of the announcer and recorded audio. 3.

Conference Presentations - Speakers express their views and ideas through clear speech. 4.Film & Television - Vocals match the picture to express the plot and enhance the expressiveness.

5.Traffic Signals - Vehicle horns to alert pedestrians and vehicles to safety.

An example of how people use sound in their daily lives.

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Examples of how people use sound carefully in production and life are as follows:1** - Play with a variety of instruments and vocals to the ear and sound**.

2.Broadcast - Conveying information to the public through the spoken word of the announcer and the recording of audio by the closed brother. 3.

Conference Presentations - Speakers express their ideas and ideas with clear speech. 4.Film & Television - Vocals match the picture to express the plot and enhance the expressiveness.

5.Traffic Signals - Vehicle horns to alert pedestrians and vehicles to safety.

6.Alarm Responder - Sirens use a screeching sound to alert you to danger. 7.

Wildlife - Birds and beasts use their calls to divide territory and attract the opposite sex. 8.Echolocation - Sonar uses the reflection of sound waves to determine the orientation of an obstacle.

9.Ultrasonic Cleaning - High-frequency sound waves** utilize to dissolve stains. 10.

Loudspeaker Announcements - Announcements are made over loudspeakers at the station Sullen Wharf.