![]() ![]() Theres also the equal loudness contour, which tells us that we hear an increase in volume differently accourding to the frequency of the sound, so each frequency has a different "double volume" level.Īll in all, it's complicated and I'm not pretending to understand all of it and I certainly oversimplified parts of it, but that's what I can tell you. Therefore, the louder your initial sound is, the even louder your "double" volume sound has to be. It is represented by dB and is widely used in signals, communication, and electronics. The Weber-Fechner law says that the more you increase a "signal", the less apparent an identical difference is (adding 5 dots to a starting 10 dots is more apparent than adding 5 dots to a starting 100). The decibel is used to measure sound levels. It makes things easier if a logarithmic scale is used this is what the decibel scale is. The ratio of intensities between silence and ‘ow that hurts my ears’ is about 1:100 million million. ![]() If you try to measure subjectively if a sound sounds twice as loud as an other, you have a bunch of other factors that come into play. The human ear is capable of hearing very quiet (low intensity) sounds and extremely loud (high intensity) sounds. That's because some of the sound from each guitar cancels out the other guitar, unlike a duplicate signal, which has no phase cancellation. What's more is that, unlike a 6dB increase in "signal" you might expect, you actually get less. If you have 2 guitarists playing together, you could say that it is twice as loud, but you don't necessarily hear it that way. What makes it difficult to comprehend are the multiple effects that come into play. Negative Decibels Explained: Summary So in the end, when your receiver displays a reading of -35dB to the speakers, you are not actually hearing -35dB, but instead whatever volume is truly being broadcast from the speaker. pressure Druck‘) beschreibt das logarithmierte Verhältnis des quadrierten Effektivwertes des Schalldrucks (Formelzeichen mit der Einheit Pa für Pascal) eines Schallereignisses zum Quadrat des Bezugswerts p 0. ![]() Das Dezibel ist eine Maßeinheit, die ein Zehntel des Bel (das eine logarithmische Maßeinheit zwischen zwei Potenzen ist) darstellt und nach ihrem Erfinder Alexander Graham Bell benannt ist. ihrer Intensität (von der schwächsten bis zur stärksten Lautstärke). Here are some properties you can use about sound:ĭuplicating a signal and hearing both together results in a ~6dB increase.Īdding 10dB increases the power of the wave by 10x.Īdding 20dB increases the amplitude by 10x. Der Schalldruckpegel L p (Formelzeichen L von engl. Sie klassifiziert Schwingungen nach ihrem Schalldruck, d. It's more useful to think in different terms when it comes to volume, like a negative decibel scale in digital audio, in reference to a 0 dB signal. Reason why it's confusing is that there's actually much more to it than you think. ![]()
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