Answered: 1. A signal given by x(t)=2cos(3a t) is… | bartleby

Related questions

Question

1. A signal given by x(t)=2cos(3a t) is sampled at a frequency of 20 Hz, starting at time t=0.
i. Is the signal sampled frequently enough? Why.
ii. Find the first six samples of the sequence.
iii. Add delay to the sampled signal given in (b) by four samples. Draw the new one.

Expert Solution

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

Equal loudness curves represent the results of measurements of A absolute threshold. B perceived magnitude. C single cell recordings. D neuroimaging procedures.
WAVE EQUATIONS = I cos? 0 Avisible v = f1 = w/k w = 2nf = 2n/T, k = 21/A = 390 – 700 nm d sin Opright = m1 (т + 0.5)1 Ipoiarized d sin Odark = B = 10 log a sin Odark = m. I, = 1.00 x 10-12 W/m² 2t %3D тлn OR (т + 0.5)Л. Vstring = /Fr/µ H = m/e fbeat = If2 – fil n1 sin 01 = n2 sin 02 Omin = 1.22 1/D An = 1/n v±v. f v 7 vs y = A sin(kx – wt + 4) c = 3.00 x 108 m/s Vn = c/n, I « (Атpltd)2 fshifted %3| Area Vsound - 343 m/s Show work (present solutions). 1. A 100 Watt incandescent bulb is about 5.0% efficient at converting electrical energy into radiant energy (i.e. it produces 5.0 W of light energy). Assume the bulb projects light equally in all directions and produces light that is randomly Unpolarized light source 8.0 m polarized (in other words the source is isotropic and very small distance between filters (not to scale) unpolarized). A pair of 30 polarizing filters is used to Observer examine the light at a First filter has electric position 8.0 meters away field transmission axis…
Consider a transverse periodic (sinusoidal) wave passing through a very long string of mass density 0.250 kg/m. The wave function for this wave is found to be: y (x,t) = (0.125 m) cos [(1.10 rad/m) x - (15.0 rad/s) t] From the equation find the following quantites; 1. Wave amplitude 2. Wave number 3. Angular frequency 4. Wavelength 5. Period 6. Frequency
A wire under a tension of 81N has a natural frequency of 256Hz. If the tension is raised to 121N.What will be the new frequency. ii.How many overtones can be found between 200Hz and 1024Hz for a wire whose fundamental frequency is 200Hz.
The normal mode frequencies are given by Select one: a. fn = n/L O b. f = nc/2L, n = 1, 2, 3, ... OC. f₁ = n/L d. kn = n/L
Party hearing. As the number of people at a party increases, you must raise your voice for a listener to hear you against the background noise of the other partygoers. However, once you reach the level of yelling, the only way you can be heard is if you move closer to your listener, into the listener's "personal space." Model the situation by replacing you with an isotropic point source of fixed power Pand replacing your listener with a point that absorbs part of your sound waves. These points are initially separated by r = 1.10 m. If the background noise increases by Aß = 4.50 dB, the sound level at your listener must also increase. What separation rț is then required? Number i Units
Which of the following statements are correct? Which one or more? a. Steven's power law states that loudness is proportional to I1/3 b. Weber's law states that the smallest detectable change in the sound stimulus for a wideband or bandpass filtered noise is proportional to its magniture c. Steven's power law states that the smallest detectable change in the sound stimulus for a wideband or bandpass filtered noise is inversely proportional to its magniture d. Weber's law states that loudness is inversley proportional to I1/3
At a temperature of 20.0o two speakers are sending sound waves of frequency 512 Hz and 2048 Hz respectively toward a door opening of width 90.0 cm. Which wave frequency experiences a greater diffraction angle upon passing through the opening? Group of answer choices a.the 512 Hz b.the 2048 Hz c.both about the same
D. 2.00 2. In a Michaelson interferometer, a 4-sided mirror rotates in place. A laser beam strikes the rotating mirror and travels 100 m to a stationary mirror, which reflects the beam back. What is the smallest frequency required to rotate the mirror so that the reflected beam follows the same path as if the mirror was not rotating? A. 1.50 x 106 Hz B. 3.00 x 106 Hz C 3.75 x 105 Hz D. 7.50 x 105 Hz R L loom S