Indicate two things you can do to increase the intensity (sound pressure level) of your voice...
Indicate two things you can do to increase the intensity (sound
pressure level) of your voice and two things you can do to increase
the fundamental frequency of your voice. Why would you do each
action?
Be sure to distinguish which two you would do for raising intensity
(perceived as loudness). and which two you would do for raising
fundamental frequency (perceived as pitch).
Homework Answers
To increase loudness of voice:
1. Breathe through diaphragm. It would put less pressure on the vocal cords and the sound will be louder.
2. Do jaw exercises and while speaking open the mouth wider.
To increase pitch:
1. Practice singing at high pitch slowly. This would increase the range of frequencies produced by the vocal cords.
2. Hum more often at high pitches. This would incresin the vocal range without stressing out the vocal cords
Add Answer to:
Indicate two things you can do to increase the intensity (sound
pressure level) of your voice...
1. If a sound of frequency 1000 Hz has intensity level 30 dB, what would be...
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...
. A sound wave at the 7 decibel level of loudness has what intensity? If the...
. A sound wave at the 7 decibel level of loudness has what intensity? If the amplitude of this wave were doubled, what would be the 1oudness in decibels? Explain how you would compute the combined loudness level of two sounds which are individually at B dB and β2 dB
4. Your ears detect a sound wave with a frequency of 315 Hz and a sound...
4. Your ears detect a sound wave with a frequency of 315 Hz and a sound intensity level of 80 dB. It originated in a vibrating string with a length of 1.9 meters. A) Waves can be longitudinal or transverse. What is the difference between these two kinds of waves? B) This question has one longitudinal wave and one transverse wave. Identify them. C) Recall that the sound you hear from a string is the fundamental frequency, which has a...
1. When a sound wave passes through air, and we hear it, the air pressure where we are varies with time. the excess pressure above (and below) atmospheric pressure in a sound wave is given by the...
1. When a sound wave passes through air, and we hear it, the air pressure where we are varies with time. the excess pressure above (and below) atmospheric pressure in a sound wave is given by the graph below: p(t) t in seconds -1 (a) Show that the fundamental (n ) is 15 times smaller in amplitude compared to the second harmonic (n-2). Hint: Expand p() in a Fourier series to show this. It would be interesting to note that...
You stand 5 meters away from two machines. One machine operates at a sound intensity level...
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?
5. By how many decibels do you reduce the sound intensity level due to a source...
5. By how many decibels do you reduce the sound intensity level due to a source of sound if you double your distance from it? Assume that the waves expand spherically. dB 6. The sound in a classroom is 63000 times as intense as the minimum threshold of hearing. What is the intensity level of this sound in decibels? dB
3. -17.7 points My Notes If you increase the intensity of a sound by a factor...
3. -17.7 points My Notes If you increase the intensity of a sound by a factor of 3, how much does the decibel level increase? Inew = 3.org LdB,new - LdB, onig + dB 4. -123 points My Notes If one clarinet causes a 60 dB (sound level), then two clarinets cause how large a sound level in decibels? 2 clarinets would have a sound level of dB 5 clarinets? dB 9 clarinets? C dB
Assume that you are at a concert in which the "Sound Intensity Level" in your ear canal is known ...
Assume that you are at a concert in which the "Sound Intensity Level" in your ear canal is known to be 110 What is the intensity of the sound in your ear canal in W/m2? What is the intensi of sound in the tissue of your eardrum in Wm2? Assume that the impedance of the air in the ear canal is Z 413 kg/(m's) and that the impedance of the eardrum is that of water, Z20 1.48e6 kg/(m's)
Assume that...
Help please!!!! By how many decibels do you reduce the sound intensity level due to a...
Help please!!!! By how many decibels do you reduce the sound intensity level due to a source of sound if you double your distance from it? Assume that the waves expand spherically.
At a distance of 73 cm, a mosquito can barely be heard at a sound level...
At a distance of 73 cm, a mosquito can barely be heard at a sound level of 4.1 dB. What is the intensity of this sound? If the same mosquito were flying at a distance of 1.3 cm from your ear, what would be the intensity of its sound? If there were two mosquitoes 1.3 cm from your ear, how loud would they sound? (dB). How loud would the mosquito sound at 1.3 cm from your ear (dB)? Hint: sound...
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...
. A sound wave at the 7 decibel level of loudness has what intensity? If the amplitude of this wave were doubled, what would be the 1oudness in decibels? Explain how you would compute the combined loudness level of two sounds which are individually at B dB and β2 dB
1. When a sound wave passes through air, and we hear it, the air pressure where we are varies with time. the excess pressure above (and below) atmospheric pressure in a sound wave is given by the graph below: p(t) t in seconds -1 (a) Show that the fundamental (n ) is 15 times smaller in amplitude compared to the second harmonic (n-2). Hint: Expand p() in a Fourier series to show this. It would be interesting to note that...
3. -17.7 points My Notes If you increase the intensity of a sound by a factor of 3, how much does the decibel level increase? Inew = 3.org LdB,new - LdB, onig + dB 4. -123 points My Notes If one clarinet causes a 60 dB (sound level), then two clarinets cause how large a sound level in decibels? 2 clarinets would have a sound level of dB 5 clarinets? dB 9 clarinets? C dB
Assume that you are at a concert in which the "Sound Intensity Level" in your ear canal is known to be 110 What is the intensity of the sound in your ear canal in W/m2? What is the intensi of sound in the tissue of your eardrum in Wm2? Assume that the impedance of the air in the ear canal is Z 413 kg/(m's) and that the impedance of the eardrum is that of water, Z20 1.48e6 kg/(m's)
Assume that...
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