First of all, why do you need to evaluate the noise of the projector? On the one hand, noise will affect the viewing experience. Excessive noise will interfere with the attention of viewers, leading to a decline in audio-visual experience. On the other hand, noise also represents the quality of electronic equipment. Low noise and stable projector equipment usually has better performance and quality.
The most commonly used method to evaluate noise in home projector is to use a decibel meter. Decibel is a unit for measuring sound, and the measuring instrument is a decibel meter. Using the decibel meter, the noise level of the projector can be judged by digital display or signal reminder.
The specific evaluation steps are as follows:
1. Preparation materials: decibel meter, projector, black and white paper, pen and record sheet.
2. Install and set the decibel meter, turn on the projector to adjust the brightness and contrast for normal viewing, and then enter the mute mode.
3. Put the blank paper under the projection screen, observe the display of the decibel meter and record the real-time results of the noise level.
4. Repeat the test, test the noise in normal mode and energy-saving mode respectively, and record the test results.
5. Summarize and analyze the recorded results, calculate the average and standard deviation, and get the noise level of the projector.
It should be noted that during the test, the environment should be as quiet as possible to avoid the influence of other noises. At the same time, in the test, we must insist on measuring many times to get more accurate results.
In a word, mastering the noise evaluation method of home projectors will help us choose high-quality projectors and provide better viewing experience for home entertainment.