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Autor Uber Gosu

Netko će reć 2-3 decibela nije puno ali taj ne razumije da ta ljestvica nije linearna već logaritamska.

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Reality

Physics tells us that for every doubling of acoustical energy, there is a 3dB increase. Conversely, a 3dB decrease means the sound is cut in half. So, 3 is the magic number right? Well, not so fast. This is where we see a conflict between scientific calculations and perceived sound levels. “Perceived” sound levels report how our ears and brain interpret the sound. In other words, perception answers the question of “What sounds ‘twice as loud’?”

Perception

Sound studies tell us time and again that a 3dBA increase in sound level is barely noticeable to the human ear. In fact, you have to raise a sound level by 5dBA before most listeners report a noticeable or significant change. Further, it takes a 10dBA increase before the average listener hears “double the sound.” That’s a far cry from 3dB.

So is perception the ultimate reality? What really constitutes twice the sound or half the sound? And why can’t our ears hear what is proven to be scientific fact? The answer to each of these questions is, of course: well, it depends!