Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Are these calibrated before they are shipped?
Document: Unless you have one of these very expensive calibrators, don't even bother with this sound meter because out of the box it appears completely uncalibrated. Near-silent room background noise at 40 dB, soft talking at 90dB, other readings all over the place. A meter like this should either be calibrated out of the box, or include what it needs to be calibrated. Having instructions that tell you a calibration device 15X more expensive is needed to make it work is ridiculous. Nowhere was this mentioned in the product description.
But, for average sound levels produced by a band, a stereo, or machinery, it works great.One user complained that it seems &#34;completely uncalibrated&#34; out of the box. The instructions state that it comes calibrated from the factory. The 40db she mentioned in a nearly quiet room is about right. 40db is a really quiet room. A spoken voice at 90db? If spoken right into the microphone, that is pretty believable. And, readings do move all over the place even though the human ear doesn't notice noise levels changing.
.It's easy to use, and has lots of features for a low cost sound meter. Also sold as other brands for a few bucks less (see below).It helps me with product reviews of some overly noisy products.PROs:- Good loudness range (30-130 dBA)- No range selector. It just works.- Good frequency range (31.5 Hz to 8500 Hz)- Tripod mount- Simple to use- MAX hold function- Auto off (or you can disable auto off)- Can be calibrated- Nice Price (usually $20 or a little less)OKs:- TYPE 2 accuracy (better then +/- 2 dB accuracy)- Display is back lit and large enough- Uses 9-volt battery (AA would be nicer)- Branded product (but the device and user manual have no brand or company indication)- Warranty: 1 year (but no written warranty provided with product)CONs:- Hand noise messes up readings (see Note 1)- No "Average" readout- - - Alternatives - - -The same meter is sold as...-Etekcity 30dB-130dB Decibel Digital Sound Level Meter-Weanas GM1351 30dB-130dB Digital Sound Level Meter-HQRP 30dB - 130dB Digital Sound Level MeterA similar meter has more features...- Wensn Mini USB Digital Sound Noise Pressure Level Meter Tester- - - Notes - - -Note 1: You need to hold it very carefully when below 70 dB.
the order went through smoothly. I haven't use the item very much yet, but will soon. It did the job so far.
ok for an inexpensive meter....i will probably buy a better one later... only bought this because of the name brand
Works, has max button, screen is fine unless you get a ton of direct light to it. I use it for guitar gear demos.
Works great and pretty accurate. A lot better than my phone. Does either fluctuating db or peak db. Doesn't show both at same time. Happy with it though and our sound guy likes it.
Works good and is easy to use. I like the back-light which is appropriate in some cases. Reasonably priced for what it does.
Well worth the money for me.
We purchased this decible meter to find out just how much sound our new small refrigerator was making. Before we had the meter we felt our new small refrigerator was just making too much noise when running. Well, we were correct... it recorded 75++ decibles.There was no way we could enjoy TV with that refrigerator in the room. So armed with the results we called customer service and they agreed and replaced it with a new one.You will also enjoy just using it for information and fun.
Answer: yes