Which will be higher decibel meter or mobile phone decibels

Are you asking, "Which test accuracy will be higher between the decibel meter and the mobile phone decibel"?

It must be that the decibel meter test is accurate. After all, it is a special equipment for testing noise sources.

Take a Huawei phone.

For example, its decibel tester is not accurate, the decibel meter of the mobile phone ** can detect the amount of noise decibel in the environment, but the accuracy is not enough, the sound of the mobile phone is collected through the microphone, which is usually much smaller than the volume of the environment itself, but it can be used to refer to whether the environment is noisy. If you need a noise source that requires accuracy, you need a professional decibel meter to measure and analyze.

The mobile decibel meter is not accurate, and the mobile decibel meter is a bit high.

The mobile phone can only be used for general judgment, and the special accuracy is much more accurate than the software on the mobile phone, so it is recommended to find a professional tester for testing.

The decibel meter is to test the decibels, and the decibel of the mobile phone depends on the volume of the switch.

Tool: Mobile phone.

1. Mobile phone users first open the "Toolbox" applet that comes with the system before the self-segment shooting.

2. After opening the "Toolbox" applet. In the program interface, find and click on the "Decibel Meter" function.

3. After turning on the "decibel meter" small function. He Bang placed the phone near the sound to be measured. This allows you to see the decibel intensity of the current sound on the phone interface.

Tool: Mobile phone.

1. Mobile phone users first open the "Toolbox" applet that comes with the system before the self-segment shooting.

2. After opening the "Toolbox" applet. In the program interface, find and click on the "Decibel Meter" function.

3. After turning on the "decibel meter" small function. He Bang placed the phone near the sound to be measured. This allows you to see the decibel intensity of the current sound on the phone interface.

Measuring decibel levels usually requires the use of specialized decibel instruments. Here's how to use a general decibel meter:

Turn on the decibel meter and place it where it needs to be measured, taking care to keep the distance between the instrument and the sound source.

The sensitivity of the whole decibel meter is usually adjusted according to the desired measurement range. If the volume is loud, the sensitivity should be reduced; Conversely, sensitivity should be increased.

To start a measurement, it usually takes a few seconds to get an accurate measurement result. During the measurement, try to be as quiet as possible to avoid affecting the measurement results.

The market decibel value is determined based on the digital readings displayed by the decibel meter. The higher the value, the louder the sound of the surface seepage panicle.

It should be noted that decibel measurement requires the selection of the appropriate decibel instrument for the specific environment and sound source. At the same time, when using decibel instruments, it is also necessary to pay attention to personal safety and the sanitation and cleaning of the surrounding high sail environment.

Noise decibel meter and volume decibel meter are not the same kind of instruments, and there are certain differences in their use, measurement range and accuracy.

Generally speaking, the noise decibel meter is mainly used to measure the noise intensity in the environment, it can measure a wide range, usually 30-130 decibels, lifting the weight and has high accuracy and sensitivity. A volume decibel meter is used to measure the intensity or volume of sound, usually in the range of 40-130 decibels, but some models can measure lower sound levels, such as 20 decibels.

Therefore, although both instruments use decibels as a unit to express the intensity of sound, noise decibel meters and volume decibel meters are not the same instrument, and there are certain differences in their use, measurement range, and accuracy.

Generally speaking, the noise decibel meter is mainly used to measure the noise intensity in the environment, it can measure a wide range, usually 30-130 decibels, and has high accuracy and sensitivity. A volume decibel meter is used to measure the intensity or volume of sound, usually in the range of 40-130 decibels, but some models can measure lower sound levels, such as 20 decibels.

So, while both instruments use decibels as a unit to express the intensity of sound, they differ in design, function, and application scenarios. , functions, and application scenarios are all different.

db is a unit of measurement of sound intensity.

Decibel is a unit of measurement that measures the ratio of two quantities of the same unit, mainly used to measure the intensity of sound, and is often expressed in DB.

"Deci-" refers to one-tenth of a tenth, and the single digit is "bei" (bel), and generally only decibels are used. The decibel was named after the American inventor Alexander Graham Bell.

The decibel is the most commonly used unit of measurement. It can be expressed as:

1. A unit that expresses the ratio of power to energy, which is equal to 10 times the commonly used logarithm of the ratio of power intensity.

2. A unit that expresses the ratio of field quantities, equal to 20 times the commonly used logarithm of the ratio of field strength amplitude.

3. The unit of sound pressure level is approximately equal to the minimum graduation value of the loudness difference that can be detected by the human ear.

Decibel definition of power class:

The decibel is a non-SI unit selected by the state, and is a unit of difference in China's legal unit of measurement, which is defined as: "the difference between the common logarithm of two similar power quantities or the ratio of quantities comparable to power multiplied by 10 equals 1".

At the same time, in the supplementary explanation of the statutory units of the People's Republic of China, the "quantity comparable to power" is explained: "It usually refers to the square of current, voltage, mass velocity, sound pressure, displacement, velocity, acceleration, force, amplitude, field strength, and sound energy density."

55 decibels is equivalent to the sound of a desktop computer running on the host

1 dB: Just audible sound.

Below 15 decibels: Feels quiet.

30 decibels: The volume of the whisper.

40 decibels: The hum of the refrigerator.

60 dB: The sound of normal conversation.

70 decibels: equivalent to walking in the downtown area.

85 decibels: cars on the road.

95 dB: Motorcycle start sound.

100 decibels: the sound of a decorative drill.

120 decibels: The sound of the plane taking off.

150 dB The sound of fireworks.

The cumulative db of Shenzhen Cargill is used to indicate the magnitude of the sound.

Decibels are sound pressure level units and are denoted as dB. Used to indicate the magnitude of the sound. 1 decibel is about the sound that a person can just feel. The suitable living environment should not exceed 45 decibels and should not be less than 15 decibels.

According to the ordinary person's hearing, 0 20 decibels are very quiet and almost invisible. 20 40 decibels are quiet, like whispering. 40 60 dB in general.

Ordinary indoor conversation 60 70 dB is noisy and nerve-damaging. 70 90 decibels are noisy, nerve cells are destroyed. 90 100 dB noise intensified, hearing loss.

100 120 decibels is unbearable, and a minute is temporary deafness.

Decibels decibels represent a unit, i.e., the ratio of two electrical or acoustic powers or two voltage or current values or similar sound volumes; Decibel is also a unit of measurement of the relative loudness of sound.

A decibel is a unit used to measure the magnitude of a sound.

80 decibels: The sound of a shrimp chewing food 100 meters away heard underwater by the microphone of a nuclear submarine.

30 decibels: The voice of a person 20 miles away.

0 dB: A mosquito flies 10 feet (about 3 meters) away.

10 dB: Very quiet room.

13 decibels: The hum of a light bulb.

15 decibels: The sound of a pin falling from a height of 1 centimeter from a distance of 1 meter.

20 decibels: night in the countryside.

30 decibels: Desert night.

40-60 dB: The sound of normal conversation.

50-53 dB: the sound of the washing machine.

60-80 dB: Cars passing 10 meters away.

70 dB: Vacuum cleaner 10 feet (about 3 meters) away; The maximum noise that humans can tolerate as determined by the EPA (without hearing loss, sleep disturbances, anxiety, learning disabilities, etc.).

85 dB: Long-term effects can cause hearing damage.

90 decibels: a bus or truck passing 10 feet (about 3 meters) away; Food blender.

100 dB: The maximum volume of general home audio equipment.

104-107 dB: Sounds that begin to cause pain (at 2750 Hz) 110-140 dB: Jet engines 100 meters away.

116 dB: The sound of the human body starting to feel vibrations (at low frequencies) 120-130 dB: The front row of a rock concert.

127 dB: Sounds that begin to cause tinnitus.

128 dB: The largest human scream measured from feet (approx. meters) away.

140 decibels: Even short sound durations can cause hearing damage.

141 decibels: Sounds that begin to cause nausea sensations.

168 dB: M1 Garand rifle at 1 meter away**.

Decibels: 1 ton of TNT explosives at 250 feet (about 75 meters) away**.

Decibels: The maximum intensity of sound that the Earth's atmosphere can theoretically propagate.

Hope, thank you!