If four machines in a workplace produce sound levels of 94 dB, 94dB, 97 dB, and 100 dB, calculate the total sound intensity level.
If four machines in a workplace produce sound levels of 94 dB, 94dB, 97 dB, and...
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 =
A constant output loudspeaker produces a sound level of 97 dB at 10 feet when located at the corner of two walls. What will be the sound level at the same distance if it is placed in an open area? a. 91 b. 94 d. 103 106 e. f. None of the above c. 97 A 200 Hz source radiates sound that produces a SPL of 85 dB at a distance of 1 meter. Is this SPL in the near-field?...
The sound intensity levels for a machine shop and a quiet library are 90 dB and 49 dB, respectively. What is the difference between the intensity of the sound in the machine shop and that in the library?
. The sound intensity levels for a machine shop and a quiet library are 95 dB and 39 dB, respectively. What is the difference between the intensity of the sound in the machine shop and that in the library?
5. The sound pressure levels (Lp) of seven different machines were 65, 72,79, 92, 83, 78 and 66 dB. Calculate the total sound pressure levels generated by these sources all operating simultaneously
You stand 5 meters away from two machines. One machine operates at a sound intensity level that is 50 dB at your location. The other machine operates at a sound intensity level of 70 dB at your location. What sound intensity level do you hear (measure in dB) when both machines are turned on?
P3.6 Source A and B combine constructively to produce a 70 dB sound. The intensity of source A is 2x10 W/m?. Determine the a) intensity of source B and b) intensity level if only source B was present.
11. The sound level in decibels (dB) is given by dB-10log(101x), where x is the intensity of the sound given in W/cm2. a) Determine the sound level in dB for a sound having an intensity of 2 x 1012 W/cm b) What would be the sound level in dB if the sound intensity were doubled? 11. The sound level in decibels (dB) is given by dB-10log(101x), where x is the intensity of the sound given in W/cm2. a) Determine the...
1. If the sound intensity of a sound wave doubles, what is the change in dB? If the sourd intensity level (in dB) increases by 5 dB, what is the change in the sound intensity? (15 pts)
A typical sound level for a buzzing mosquito is 38 dB, and that of a vacuum cleaner is approximately 66 dB. Approximately how many buzzing mosquitoes will produce a sound intensity equal to that of a vacuum cleaner?