Example 1.1 Assume that three sounds of different frequencies (or three incoherent noise sources) are to be combined to obtain a total sound pressure level. Let the three sound pressure levels be (a) 90 dB, (b) 88 dB and (c) 85 dB. Find the total sound pressure.
Q: A sound wave with intensity 2 x 10 -3 W/m2 is perceived to be modestly loud. Your eardrum is 6 mm in…
A: Intensity of sound (I) = 0.002 Wm2Diameter of eardrum (d) = 6 mm
Q: The speed of sound in air is 331 m/s at atmospheric pressure and 0 Celsius. Suppose you put a…
A: we know that
Q: The speed of sound in air is 331 m/s at atmospheric pressure and 0 Celsius. Suppose you put a…
A:
Q: There are 4 identical dogs barking with identical sound intensity levels of 92 dB as measured by a…
A:
Q: Image the blood's speed? [No That i
A: The reflected wave dropper shift as,
Q: Suppose fluid B has 4.6 times the bulk modulus and 1.2 times the density of fluid A. Find the ratio…
A:
Q: The first harmonic of a series created by a standing air wave in a tube open at one end only is 36.8…
A: Given in question - First harmonic frequency (f) = 36.8 Hz Length…
Q: We consider two sound sources that oscillate in phase with a frequency of 108 Hz. At a point 6.27 m…
A: Given: f = 108Hzr1 =6.27mr2=7.43 mAo = 5.02*10-7 mv = 343 m/sρ=1.22 kg/m3
Q: What is the length of the shortest tube (tube 7)? Assume the speed of sound in air is 343 m/s. What…
A:
Q: A sound has an intensity level of 118 dB. What is the physical sound intensity in watts/m2?
A:
Q: onvert the following sound pressure levels to sound pressure: Lp = 80 dB Lp = 15 dB
A: Given data, Lp=80 dBLp=15 dB
Q: Two students hear the same sound and their eardrums receive the same power from the sound wave. The…
A: Given; Let there be two students A and B. Both receives the same power from sound wave i.e. PA =…
Q: A small reverberation chamber 8ftx9ft x10ft is employed to measure effective sound absorption…
A: Given data :L=8 ftW=9 ftH=10 ftt=5 sec or 1 secThe surface used to cover part s=40 ft2
Q: The speed of sound in air is 331 m/s at atmospheric pressure and 0 Celsius. Suppose you put a…
A: Given Speed of sound in air (V0) = 331 m/s at 0° C We know speed…
Q: The level of sound D in decibels is defined as follows: D = 10 log (10 16 ) 10-16 where I is the…
A:
Q: Learning Goal: To learn the properties of logarithms and how to manipulate them when solving sound…
A: The logarithm of x written log(x) tells you the power to which you would raise 10 to get a So, if y…
Q: A speaker puts out a constant sound with a power of P = 15 milliwatts and frequency fs = 256 Hz.…
A: Power (P) = 0.015 W fs = 256 Hz
Q: The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the…
A: listening position icrease from23 dB to 61 dB
Q: What is the frequency of the second overtone?
A:
Q: Q:A- Calculate the sound level in dB of a sound intensity 10-8 Wm-2
A:
Q: Problem 4. A point source emits sound waves uniformly in all directions. At distance 90.0 m from the…
A:
Q: Problem #8: The noise from a grinder in a factory is 32000 times more powerful than the noise from a…
A: Since you have asked more than 3 Parts of a question, according to our guidelines I will only answer…
Q: A.) Find the loudness L, in decibles (dB), of a trombone given the intensity is 1010I0 B.) Find the…
A: A) The trombone’s loudness in decibel can be determined as, Here, I and I0 represent sound’s…
Q: Chapter 16, Problem 069 Your answer is partially correct. Try again. ES. lem The bellow of a…
A: The expression for the intensity is,
Q: You are at BNA (Nashville Airport) watching commercial airliners take off. At a distance of 1,048.7…
A: Sound level at a distance of 1048.7 units away from plane = 74.82 decibels new sound level = 90.74…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- A convertible moves toward you and then passes you; all the while, its loudspeakers are producing a sound. The speed of the car is a constant 13.5 m/s, and the speed of sound is 344 m/s. What is the ratio of the frequency you hear while the car is approaching to the frequency you hear while the car is moving away?You hear a sound of (5.6x10^1) decibels. What is the intensity? Give your answer in microwatts/m2 to 2 sf. Assume the threshold of human hearing is 1.0x10-12 W/m². Use two significant figures for your answer. Note: 1 µW = 1×106 W Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: х10 Answer3 rces The sound of normal breathing is not very loud, with an intensity of about 11 dB at a distance of 1 m away from the face of the breather. Note that in this problem sound intensity in decibels is denoted 3; intensity in W/m² is denoted I View Available Hint(s) distance Ddetect in meters. Ddetect = 3.16 m Submit Previous Answers ✓ Correct Part B In general, if a sound has intensity of 3 dB at 1 m from the source, at what distance de from the source would the decibel level decrease to 0 dB? Since the limit of hearing is 0 dB this would mean you could no longer hear it. Express the distance in terms of B. Be careful about your signs! View Available Hint(s) Submit IVE] ΑΣΦ do 3.55 3 Previous Answers X Incorrect; Try Again; 5 attempts remaining < Return to Assignment Provide Feedback P Pearson m Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us |
- We will assume that a sound wave, once generated and emitted, will propagate uniformly in all directions of 3-dimensional space. Find an expression for the displacement s(r, t) of the air particles from equilibrium, where r is the radial distance from the source, and t is time. Introduce physical constants/coefficients, with appropriate physical dimensions, when necessary.If a sound intensity level of 0 dB at 1000 Hz corresponds to a maximum gauge pressure (sound amplitude) of 10−9 atm, what is the maximum gauge pressure in a 69 dB sound? (Enter your answer in atm.) What is the maximum gauge pressure in a 159 dB sound? (Enter your answer in atm.)A 520-Hz sound travels through pure neon. The wavelength of the sound is measured to be 0.84 m. What is the speed of sound in neon?
- Problem #3: What intensity level dB in does a sound of 3. 04 × 10–4 W/m2 correspond to?The following overall sound pressure levels are measured from individual items of plant at the same location: 63 dB, 65 dB, 58 dB, 43 dB. Calculate the cumulative sound pressure level if all items of plant were to operate simultaneously:a. 64.0dBb. 67.6 dBc. 67.0 dBd. 135.3 dB1) The root mean square pressure value of several sound sources is 33, 43, 53, and 63 Pascal. What is the equivalent sound pressure of each one alone in decibel?