A microphone connected to an amplifier takes a 10 dB voice and turns it into a 50 dB sound. By what does the intensity of the sound increase by?
A microphone connected to an amplifier takes a 10 dB voice and turns it into a...
Consider an opera singer singing loud in a microphone while you’re relaxing near the theaters’ loudspeaker. The singer’s voice creates a sound level of 72 dB. What is the intensity, I, of this sound?
A microphone is 9.3 m from a point source of sound. The microphone detects an intensity of 121.8 pW/m2. (Recall the pico prefix means LaTeX: 10^{-12} 10 − 12 .) Assuming the generator is perfectly efficient, what power in pW is required to produce the detected sound? Report your answer to the nearest pW.
1. If a sound of frequency 1000 Hz has intensity level 30 dB,
what would be the intensity level of sound frequency 50 Hz which
appears to have equal loudness? (Answer= 60 dB)
2. Intensity of 30 dB, 1000 Hz sound= (Answer= 1.000 x 10-9
W/m^2)
*3. What is intensity (in W/m^2) of the equal loudness 50 Hz
sound? (Answer is NOT 50.12 x 10^-12)
*4. What is the ratio of the pressure variation (in amplitude)
of the equal loudness...
The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 23 to 61 dB. What is the ratio of the final sound intensity to the original sound intensity?
A certain sound level increases by an additional 20 dB. By how much does the intensity increase? The intensity increases by a factor of 200. The intensity increases by a factor of 100. The intensity increases by a factor of 20. The intensity increases by a factor of 2. The intensity does not increase.
At a certain distance, the sound intensity level of a dog’s bark is 50 dB. At that same distance, the sound intensity of a rock concert is 10,000 times that of the dog’s bark. What is the sound intensity level of the rock concert?
The Intensity, or loudness, of a sound can be measured
decibels (dB), according to the equation where is the intensity of
a given sound and l 0 the threshold of hearing intensityWhat the
intensity, decibels, when r=10^ 0 \ l 0 rangle
[6] where / The intensity, or loudness, of a sound can be measured in decibels (dB), according to the equation (dB) - 10log is the intensity of a given sound and lo is the threshold of hearing intensity....
Sketch the Bode plots for a stable three-pole amplifier with dc
gain 10^5 whose poles have magnitudes 0.1 MHz, 1 MHz and 10 MHz.
Find the gain margin and phase margin of the amplifier if it is
connected in a feedback loop with (a) unity feedback factor; (b)
feedback factor 5.623 x 10^-5; (c) closed-loop dc gain 50 dB. In
each case indicate whether the closed-loop amplifier is stable or
unstable. What is the minimum stable closed-loop dc gain of...
Sound Intensity & dB: You are watching the space shuttle rise after it launches. The sound level of the shuttle is 170 dB at a distance of 10.0m from the engine flames. Your seat in the bleachers is 10.00 km away. 25. What is the sound level at your ear (in dB)? Note: Pay attention to the units required for the answer. DIRECT SOUNDS Jettake-off, un shot Jack hann er Threshold of pain Rock concert Dance dub Voice shouting Factory...
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?