Digital sound level meter "GM1351" which represents the amount of noise around us by noise

Even though I think that I should go to bed at night, the sound of the clock ticks too loud and I can not sleep, I can not concentrate on working sounds of PC fans, so it sounds a bit nervous about my body sound , A digital sound level meter that shows the amount of noise around such a body with a numerical value is "GM 1351"is.

Shenzhen City Shuang Genetic Technology Co., Ltd. - Sound Level Meter GM 1351 - Sound Level Meter GM 1351
http://www.benetechco.com/en/Products/Sound-Level-Meter-GM1351-product_51.html


The package of GM1351 looks like this.


Within body · written in Chinese · written guarantee & instructions · 6F22 type 9V stacked battery


Body of GM 1351


There is a sound collecting microphone and a windproof sponge at the tip of the main body, and it is like this when the windproof sponge is removed.


Operate the main unit with the power button and MAX button 2.


Rear side of the main unit


Since there is a screw hole for the tripod on the back, it is OK even if you use the GM1351 fixed to a tripod.


Pacari on the battery cover on the back.


You can use it by inserting the attached laminated battery here.


Start by pushing the power button.


When it starts up, it picks up surrounding sound with such feeling and displays the noise level as a numerical value. There are multiple characteristics in the sound level meter, but in this GM 1351 the noise level is "DBA"Therefore, considering the auditory characteristics of a personA characteristicIt is understood that it is a sound level meter with.


Furthermore, when I try to press the MAX button on the main unit ......


Among the recorded noise after pressing the MAX button, the one with the highest noise level is displayed on the screen. However, since the GM1351 responds sensitively to a bit of noise, it is a nice function if you want to record the instantaneous maximum noise level in a fairly large noise environment.


Sound insulation performance standards and design guidelines for buildingsAccording to, each noise level is represented as follows. Using this as a guideline, to investigate to what extent the noise environment around the desk is placed ... ...


First, measure the noise level in the editorial department of GIGAZINE. The sound typing the personal computer of the editorial staff quietly reverberates, but the measurement result is 44.3 dBA and the level "normal conversation is sufficiently possible" level.


Next, the notebook computer used in GIGAZINE editorial department, Let's noteCF-SX 2I will try measuring the noise level near. It is 46.7 dBA which is displayed and level which is not much different from inside the editing section room. Even if you see the noise level you can see that the CF-SX2 has only SSD-equipped model and is operating quite quietly.


I decided to measure the noise level around the desktop personal computer that I felt noisy next time.


When placing the GM1351 on the back side with exhaust heat grooves etc., it recorded a noise level of 61.5 dBA. In the room, I felt that it was noisy at a noise level "I can hear it very loudly, I can speak if I enlarge my voice", but I am surprised that it will be such a high number.


When setting the GM1351 near the front of the PC body and measuring the noise level, the value is recorded as 52.9 dBA, and the noise level has changed greatly at the position where the sound level meter is placed. It seems obvious that the environment around this desktop is slightly noisy since the noise level which was 44.3 dBA in the surrounding area comes near 52.9 dBA when coming near the desktop.


When you measure the noise level around your body like this, you can see that the noise level is high near the surprising thing and it may be a catalyst to eliminate the source of daily stress. In Amazon's review, "At first we could expect relative if we could make a relative comparison, but when I tried to verify it with a sound level meter calibrator (fitting 94 db exactly) that was suitable for the company from the beginning, it is perfectly" 94.0 db I could measure without deviating from! It is written that the performance of the calibrator is good, it may be only shortly after purchase, but I think that it is good for the price "and it seems that quality is quite high for the price of 2599 yen is.

Amazon.co.jp: Small digital sound level meter Digital sound level meter 【Parallel import goods】: DIY · Tool
http://www.amazon.co.jp/dp/B008BK2FO0