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Like, I don't want to measure the decibel level around me. I want to know, for example, how strong the sound is coming from a device.

I heard that there are things like a jack special cable to limit the decibels, but what about a bluetooth device?

To be a little more clear; I read that sounds above the range of 80 decibels might damage the human hearing. I'm constantly using my headphones and I'd like to know if there is a way to check the decibel level of the sound coming out of my headphones so I can ensure that I'm not above the safe limit.

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    sorry but it's really unclear what you are asking. Can you please be a little more specific? – Mark Feb 7 at 1:09
  • Himad - if you register your account you can always comment on your own posts. For now I'll approve your edit into your post, but please look at registering. – Rory Alsop Feb 7 at 18:54
  • Decibel is a relative measure. You probably are talking about dB(SPL), which is a measure for sound pressure. There are ready-made measurement instruments for that, which can be calibrated. If you use anything else, you have the problem of how to calibrate it, which is probably too involved for a beginner. Without calibration, such a measurement is close to useless. – sh- Feb 7 at 23:11

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