Two sound sources produce sound power levels of 53 dB and 66 dB. Relative to the reference power level W0 = 10-12W, this gives W1/W0 = , W2/W0 = , and a sound power ratio W2/W1 =
Two sound sources produce sound power levels of 53 dB and 66 dB. Relative to the...
If four machines in a workplace produce sound levels of 94 dB, 94dB, 97 dB, and 100 dB, calculate the total sound intensity level.
At a rock concert, a dB meter registered 135 dB when placed 2.3 m in front of a loudspeaker on the stage. The intensity of the reference level required to determine the sound level is 1.0×10−12W/m^2. What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? Express your answer to two significant figures and include the appropriate units. How far away would the sound level be 83 dB? Express...
If two firecrackers produce a sound level of 90 dB when fired simultaneously at a certain place, what will be the sound level if only one is exploded? [Hint: Add intensities, not dB's.]
To understand the decibel scale. 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...
What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? Express your answer to two significant figures and include the appropriate units. Constants At a rock concert, a dB meter registered 125 dB when placed 2.9 Im in front of a loudspeaker on the stage. The intensity of the reference level required to determine the sound level is 1.0 x 10-12 W/m? 勺 ? ' P-1 Value Units Submit...
4. Using MATLAB, generate an m-file to produce a plot of dB
power ratio (10log10(Ratio)), and dB voltage ratio
(20log10(Ratio)). Use the logspace() command to generate a
logarithmic Ratio vector ranging from 10-2 to 106, consisting of
2000 points. Use the semilogx() command to plot dB_Power ratio and
dB_Voltage ratio versus Ratio. Include the title shown below ending
with your name, x-axis label, y-axis label and legend as shown in
the plot below.
dB Power and dB Voltage Ratios Jody...
At a rock concert, a dB meter registered 135 dB when placed 2.3 m in front of a loudspeaker on the stage. The intensity of the reference level required to determine the sound level is 1.0 x 10-12 W/m2 Part A What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? Express your answer to two significant figures and include the appropriate units. Part B How far away would the sound level be...
At a rock concert, a dB meter registered 135 dB when placed 2.3 m in front of a loudspeaker on the stage. The intensity of the reference level required to determine the sound level is 1.0 x 10-12 W/m² Part A What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? Express your answer to two significant figures and include the appropriate units. HA ? P= Value Units Submit...
please break it down step by step I'm really confused for
question 4 and 2 b
1. Find the intensity level of sound with the following intensities: a) 6.84 x 10-6 W/m2 b) 45.6 x 10-14W/m2 2. Find the intensity corresponding to the following: a)-18.0 dB b) 118 dB 3. Two sounds differ in intensity levels by 105 dB. What is the ratio of the intensities of the two sounds? What sound intensity level is produced when 3 identical loudspeakers...
When two people were talking in a small room, the sound intensity level was 61 dB everywhere within the room. Then, there were 10 people talking in similar manner simultaneously in the room, what was the resulting sound intensity level (in dB)?