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How many times louder is a sound wave with an intensity of 50dB than a sound wave with an intensity of 20dB?
Wiki User
∙ 13y ago
Better think of the sound pressure, when you are listening. Sound pressure moves your ears and the diaphragm of the microphones. The sound intensity is very small. The level of 50 dB is equal to 0.0000001 W/m2 acoustic intensity. Scroll down to related links and look at "Conversion of sound units (levels)".
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoFirst a little background info:
The scale for measuring intensity is the decibel scale. The threshold of hearing is assigned a sound level of 0 decibels (abbreviated 0 dB); this sound corresponds to an intensity of 1*10-12 W/m2. A sound which is 10 times more intense ( 1*10-11 W/m2) is assigned a sound level of 10 dB.
Observe that this scale is based on powers or multiples of 10. If one sound is 10x times more intense than another sound, then it has a sound level which is 10*x more decibels than the less intense sound.
Thus given a level of 50 dB we know that the intensity of sound must be 100000x as intense as 0dB so the sound intensity is 10-7W/m and likewise, the intensity of 90dB is 10-3 W/m2
Wiki User
∙ 12y agoWhat is the sound intensity I that has a sound intensity level of LI = 10 dB?
Reference sound intensity Io = 10^−12 W/m² (Threshold of hearing)
Reference sound intensity level LIo = 0 dB-SIL (Threshold of hearing level)
Get sound intensity I when entering sound intensity level LI:
I = Io×10^(LI/10) in W/m² = 10^−12×10^(10/10) = 10^−11 W/m².
Wiki User
∙ 12y agoWhat is the sound intensity I in W/m² of a sound intensity level LI = 30 dB?
Reference sound intensity Io = 10^−12 W/m² (Threshold of hearing).
Reference sound intensity level LIo = 0 dB-SIL (Threshold of hearing level).
Get sound intensity I when entering sound intensity level LI = 30 dB.
I = Io×10^(LI/10) W/m² = 10^−12×10^(30/10) W/m² = 10^−9 W/m²
= 0.000000001 W/m².
Wiki User
∙ 13y agoA sound becomes twice as loud for every 10dB increase. In this case dB increases by 30 so the loudness increases by 8 times (2x2x2)
Wiki User
∙ 14y ago50 dB sound intensity level equals 10-7 W/m2 = 0.0000001 W/m2 90 dB sound intensity level equals 10-3 W/m2 = 0.001 W/m2
Wiki User
∙ 13y ago50dB - 30dB = 20dB = a power ratio of 100
Wiki User
∙ 13y ago30 dB louder = 1,000 times as much power.
Jerziya Irby
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What is the maximum and minimum intensity of sound that human call can ear?
20dB
A sound of 20 dB intensity is twice as loud as one of 10dB?
No, it is 10 times louder. dB is a logarithmic scale; every 10 dB, the intensity increases by a factor of 10. Thus, 10 dB is 10 times louder than 0 dB, 20 dB is 10 times louder than 10 dB, and 30 dB is 10 times louder than 20 dB.No, it is 10 times louder. dB is a logarithmic scale; every 10 dB, the intensity increases by a factor of 10. Thus, 10 dB is 10 times louder than 0 dB, 20 dB is 10 times louder than 10 dB, and 30 dB is 10 times louder than 20 dB.No, it is 10 times louder. dB is a logarithmic scale; every 10 dB, the intensity increases by a factor of 10. Thus, 10 dB is 10 times louder than 0 dB, 20 dB is 10 times louder than 10 dB, and 30 dB is 10 times louder than 20 dB.No, it is 10 times louder. dB is a logarithmic scale; every 10 dB, the intensity increases by a factor of 10. Thus, 10 dB is 10 times louder than 0 dB, 20 dB is 10 times louder than 10 dB, and 30 dB is 10 times louder than 20 dB.
How much louder is 50db then 30db?
The sound of 50 decibles will have 105 and 30 db will have only 103 w/m2 sec.It is clear that first one has greater intensity The sound of 50 decibles will have 105 and 30 db will have only 103 w/m2 sec.It is clear that first one has greater intensity The sound of 50 decibles will have 105 and 30 db will have only 103 w/m2 sec.It is clear that first one has greater intensity
How do you convert the power into decibel?
You can't change a single quantity, only a ratio, into a decibel:The ratio of powers in dB =10log10(P/P0)where P is the measured power and P0 is the reference level for the application.So if the reference is 1W and the signal is 100W the ratio =10log10(100/1) = 10 X 2 = 20dB(For intensities the factor is 20)
What is the maximum and minimum intensity of sound that human call can ear?
20dB
A sound of 20 dB intensity is twice as loud as one of 10dB?
No, it is 10 times louder. dB is a logarithmic scale; every 10 dB, the intensity increases by a factor of 10. Thus, 10 dB is 10 times louder than 0 dB, 20 dB is 10 times louder than 10 dB, and 30 dB is 10 times louder than 20 dB.No, it is 10 times louder. dB is a logarithmic scale; every 10 dB, the intensity increases by a factor of 10. Thus, 10 dB is 10 times louder than 0 dB, 20 dB is 10 times louder than 10 dB, and 30 dB is 10 times louder than 20 dB.No, it is 10 times louder. dB is a logarithmic scale; every 10 dB, the intensity increases by a factor of 10. Thus, 10 dB is 10 times louder than 0 dB, 20 dB is 10 times louder than 10 dB, and 30 dB is 10 times louder than 20 dB.No, it is 10 times louder. dB is a logarithmic scale; every 10 dB, the intensity increases by a factor of 10. Thus, 10 dB is 10 times louder than 0 dB, 20 dB is 10 times louder than 10 dB, and 30 dB is 10 times louder than 20 dB.
How loud is 20db?
20db is a soft sound.
How much louder is 50db then 30db?
The sound of 50 decibles will have 105 and 30 db will have only 103 w/m2 sec.It is clear that first one has greater intensity The sound of 50 decibles will have 105 and 30 db will have only 103 w/m2 sec.It is clear that first one has greater intensity The sound of 50 decibles will have 105 and 30 db will have only 103 w/m2 sec.It is clear that first one has greater intensity
What must you do to the strings on an instrument to make a louder sound?
Amplifying, or amplification would be common descriptors for the process of making sound louder.In musical instruments, sounding boards are one common practice. These vibrate a larger surface. This applies to piano and violas. A horn or trumpet is a device for matching the impedance of the source to that of free air, and this device is used in the brass instruments(including the digeridoo!) and some wood wind instruments. A car horn and a speaking trumpet are other examples.These simple systems may give in excess of 20dB amplification. (100 times).
What is PAD in Audio application?
It is either:- Pad button, that is found on some preamps and it is used for lowering input gain, usually by -20dB.- Synth pad, that is a a sound used in electronic music which is a harmonic background sound
How many decibels in the average whisper?
Between 1 and 20db
What is the meaning of 20dB per decade?
I assume you are looking at bode plots. 20dB per decade means an increase or decrease in signal strength of 20dB for every decade of frequency (10Hz to 100Hz is a decade, 100 Hz to 1000Hz is a decade). This is common talk when discussing filters. If you want further (graphical) explanation, search wikipedia for "bode"
What is the dB value for a gain of 10?
10dB It is a logarithmic relationship, so a gain of 20 is 13dB, and a gain of 100 is 20dB
How Loud Is A Fire Alarm In Decibels?
Just tested our work alarm and it read 95db.
Why there is a clipping in the signal output when you change the attenuation from 20db to 0 db in function generator?
A: Clipping only occurs if the input surpasses a threshold like the Vbe of a transistor. The 20 Db is really a change3 in voltage of a 100 that is not a small change
What is the range of human hearing?
Somewhere down around 20 hertz (cycles per second) is the lowest that most people can hear. On the high end, it is far more variable; 20,000 hz is common, and 30 to 50 KHz is not unknown.
