Intensity level is given by b = 10 log(I/I0) with I0 = 10−12 W/m2. The usual threshold of human hearing is defined as intensity level of b = 0 dB. What does this actually mean in terms of sound intensity?
Intensity level is given by b = 10 log(I/I0) with I0 = 10−12 W/m2. The usual...
Using an intensity of 1 × 10-12 W/m2 as a reference, the threshold of hearing for an average young person is 0 dB. Person 1 and person 2, who are not average, have thresholds of hearing that are β1 = -11.0 dB and β2 = +9.00 dB. What is the ratio I1/I2 of the sound intensity I1 when person 1 hears the sound at his own threshold of hearing compared to the sound intensity I2 when person 2 hears the...
Please answer both questions carefully (a) Determine the intensity of sound in W/m2 reaching a person sitting at a distance of 5 m from a 200-W loud speaker. (b) The level of sound for threshold of hearing with intensity given by 1,-10x 10 given by 1,- 1.0x 10-12 W/m Wm is 0 decibel. Find the intensity of sound for a level of 50 decibels hi threshold of hearing.
What is the sound intensity level of a sound with an intensity of 2.4×10−6 W/m2 ? In dB
A) What is the intensity (in W/m2) of a sound that has a level 3.00 dB lower than a 4.15 ✕ 10−9 W/m2 sound? B) what is the intensity in W/m2 of a sound that is 10.0 dB higher than a 4.15 x10-9 wW/m2 sound?
What is the intensity (in W/m2) of a sound that has a level 3.00 dB lower than a 2.42 ✕ 10−9 W/m2 sound? W/m2 (b)What is the intensity (in W/m2) of a sound that is 10.0 dB higher than a 2.42 ✕ 10−9 W/m2 sound? W/m2
What is the sound level of a sound with an intensity of I = 1.00×10-6 W/m2? Give your answer in dB units. A: 60.00 B: 79.80 C: 106.13 D: 141.16 E: 187.74 F: 249.69 G: 332.09 H: 441.69 Now the intensity of this sound is increased to a value of 38.0 times of its original intensity. What is the new increased sound level? Give your answer in dB units. A: 5.62 B: 8.16 C: 11.83 D: 17.15 E: 24.86 F:...
The decibel scale is a logarithmic scale for measuring the sound intensity level. Because the decibel scale is logarithmic, it changes by an additive constant when the intensity as measured in W/m2 changes by a multiplicative factor. The number of decibels increases by 10 for a factor of 10 increase in intensity. The general formula for the sound intensity level, in decibels, corresponding to intensity I is β=10log(II0)dB, where I0 is a reference intensity. For sound waves, I0 is taken...
Using a frequency-measuring lab device, I am to map out the sound intensity level distribution (dB) in a room (both with & without music playing) to create a 5x5 grid of 25 data points. Using the following data table of sound intensity level β(dB) and corresponding intensity I(W/m2), I also need to find the intensity to the nearest order of magnitude for the points on my sound intensity level maps. Here is the data table: Intensity levelβ(dB) Intensity I(W/m2) Example/effect...
At a concert, a person is standing 2.00 m from a speaker, where the sound intensity is 0.120 W/m2. Another person is 32.0 m from the speaker. Assume the sound is emitted equally in all directions. I0 = 1.00 x 10-12 W/m2 a) What is the intensity in W/m2 at 32.0 m from the speaker? b) What is the sound level in dB at 32.0 m from the speaker? A. The intensity is 7.50 x 10-3 W/m2 B. The intensity...
Hearing damage may occur when a person is exposed to a sound intensity level of 90.0 dB (relative to the threshold of human hearing) for a period of 9.00 hours. An eardrum has an area of 3.42 x 10-4 m2. How much sound energy is incident on the eardrum during this time?