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60 dB sound pressure level is about conversational speech listened in 1 meter distance.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoYou will laugh: 60 dB sound intensity level is equal to 60 dB sound pressure level (SPL).
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If transmitter power is increased from 200 Watts to 400 Watts how do you convert to Db form?
Decibels (db) is relative power, log base 2, times 3. Increasing power from 200 watts to 400 watts is doubling power, so the decibel change is +3 db.800 watts would be +6 db, 1600 watts would be +9 db, 100 watts would be -3 db, 50 watts would be -6 db, and so on.
Prove dbm plus dbm equals db?
The decibel scale is a logarithmic scale where each change in three dB represents a power factor change of two. (3 dB is power times two, 6 dB is power times four, 9 dB is power times 8, etc. Similarly, -3dB is power divided by two, -6 dB is power divided by four, etc.) Zero dB is assigned some arbitrary reference power. One example is 1 mV across 600 ohms. If you double the voltage into a constant resistance, the power quadruples, so 2 mV would be +6 dB, 4 mV would be +12 dB, etc. The letter after dB is the reference power. In the case of dBm, it means that 0 dB is 1 milliwatt, so 2 milliwatt is +3 dB, etc. There are many dB scales, such as dBa, used in sound measurements. Still, fundamentally, 3 dB is a doubling of power, -3 dB is a halving of power, so, for any arbitrary scale, say dBq, then saying +6dBq is saying a power four times higher than 0 dBq. In the end, dBm plus dBm is delta dB, with no scale.
What connector is used in RS-232 transmissions?
DB-25 D-Sub-9 or D-Sub-25
What is the dB rating for pain threshold?
If you mean the sound pressure level that causes pain, it is about 120 dB SPL.
What is dB in Electronics Engineering?
Deci-bels (dB) are a logarithmic measure of system/network amplification or gain (G). The logarithms are taken to the base 10 and multiplied by 20:dB = 20logG (where G is the gain of the system)To give an example of what this means:G = 0.01, so dB gain = 20log0.01 = 20 * -2 = -40dBG = 0.1, so dB gain = 20log0.1 = 20 * -1 = -20dBG = 1, so dB gain = 20log1 = 20 * 0 = 0dBG = 10, so dB gain = 20log10 = 20 * 1 = 20dBG = 100, so dB gain = 20log100 = 20 * 2 = 40dBG = 10000, so dB gain = 20log10000 = 20 * 4 = 80dBThere are other uses for dB in electronics, where logarithms are useful they are preferred. The reasons logs can be useful is because the natural log of an exponential curve is a straight line, allowing for easier ways of understanding the behaviour of a system.
What is the loudness of a normal conservation?
A normal conversation has a loudness (decibels level) of about 60 dB. As iy approached 70 dB it would be come loud.
How many decibels is are fireworks?
140 dB A normal conversation is about 60 dB (Just to let you know how loud fireworks are)
How loud you can be?
100 dB
How loud is a avalanche in decibels?
A avalanche can range from 100 dB to 180 dB
How loud does a sound have to be to do damage to your hearing?
90 db
How loud is 69 db?
Since the db scale is relative, it depends on what 0 db means. Typically, however, 69 db is a very soft sound, almost a whisper.
How loud is 1000 db?
That's the sound of the Earth disintegrating.
How loud is whispering in decibels?
Ballpark? 25 - 30 dB.
How loud in decibels is the m2 machine gun?
About 132 dB(A)
How loud is 45 - 50 decibels?
The sound pressure of 45 dB is about a quiet library and 50 dB is about an everage home.
Normal speech measures 60 dB A busy street measures 70 dB How many times louder is the busy street than normal speech?
70 dB is 10 times louder than 60 dB.
Why should you need a db?
If you want to express large numbers of ratios with small values you will like the decibel. 1000 volts means 60 dB. The reference 0 dB = 1 volt. 0.001 volt means -60 dB.
