1. When the strings of an acoustic guitar are plucked near the bridge the sound character,...
1. When the strings of an acoustic guitar are plucked near the bridge the sound character, timbre, of the guitar is different than when the strings are plucked near the sound hole. Explain
Homework Answers
This difference is due to one that the point where the guitar is plucked is different, ie. the one struck near the bridge will create a different harmonic than one stuck near air hole. One more parameter that changes the sound is that the vibration in air column in the air hole is different and it would be in a different harmonic, this also contributes to change in sound.
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1. When the strings of an acoustic guitar are plucked near the
bridge the sound character,...
1. (review: B&S 3.3) Two guitar strings are made of nylon and strung on a guitar....
1. (review: B&S 3.3) Two guitar strings are made of nylon and strung on a guitar. They are held at the same tension and have the same length and different fundamental frequencies. a) Write the equation (3.1), a compilation of Mersenne's laws, in the space below. b) In view of the above equation, what accounts for the different frequencies? c) How could you determine which one has the lower frequency by inspecting the strings? Explain your reasoning.
One of the 57.5cm -long strings of an ordinary guitar is tuned to produce the note...
One of the 57.5cm -long strings of an ordinary guitar is tuned to produce the note B3(frequency 245 Hz) when vibrating in its fundamental mode. 1. Find the speed of transverse waves on this string. 2. If the speed of sound in the surrounding air is 344 m/s, find the frequency of the sound wave produced in the air by the vibration of the B3 string. 3. If the speed of sound in the surrounding air is 344 m/s, find...
The lowest string of a certain guitar is 64 cm long and has a mass density...
The lowest string of a certain guitar is 64 cm long and has a mass density of 6.3 g/m. The string is fixed at its ends by the bridge and the nut of the guitar. (a) What tension in the string is required to tune it so that its fundamental frequency matches the E2 musical note at 82.41 Hz? Give an answer in both N and lbs. (b) The effective string length can be shortened by pressing your finger down...
1. Why does a vibrating string on a guitar or violin sound louder when placed on...
1. Why does a vibrating string on a guitar or violin sound louder when placed on the instrument than it would if were left alone to vibrate in the air while off the instrument? 2. One evening, I was walking around my neighbourhood and the temperature was 14C. An explosion occurred at a distance of 6.00 km from me. How long after the explosion do I hear it? 3. An automobile is moving at 30.0 m/s and is driving towards...
Assume that the length of the section that vibrates in the strings of a guitar is...
Assume that the length of the section that vibrates in the strings of a guitar is 1 m, this is the distance from the bridge to the nut. The second string from the top, out of six, is conventionally tuned to A two octaves below concert A. This is written as A2, and the note has a frequency of 110 Hz. The A-Major scale starting at A2, with the respective frequencies in the Pythagorean Tuning is: A2: 110.00 Hz. ...
5. Imagine a string that is fixed at both ends (e.g. a guitar string). When plucked, the string forms a standing wave. The vertical displacement u of the string varies with position r and time t. Sup...
5. Imagine a string that is fixed at both ends (e.g. a guitar string). When plucked, the string forms a standing wave. The vertical displacement u of the string varies with position r and time t. Suppose u(x,t) = 2 sin(nx) sin(mt/2), for 0 x 1 and t 0. Convince yourself of the following: If we freeze the string in time, it will form a sine curve. Alternatively, if we instead focus on a single position, we will see the...
Joe, standing near a straight road, records the sound of the horn of a car traveling...
Joe, standing near a straight road, records the sound of the
horn of a car traveling at a constant speed. The recorded frequency
as a function of the car's position along the road for trials at
different car speeds is accurately graphed below.
Greater than Less than Equal to When the car is far
away, the average of the frequencies moving in and out is ..... the
frequency at rest.
Greater than Less than Equal to The distance of Joe from
the...
Amy, standing near a straight road, records the sound of the horn of a car traveling at a constant speed. The recorded...
Amy, standing near a straight road, records the sound of the horn of a car traveling at a constant speed. The recorded frequency as a function of the car's position along the road for trials at different car speeds is accurately graphed below. 1050 - - - - - -.-.-.-.-.-.-.-.-.-.--E-- R . Observed Frequency, (Hz) - - - - - - - - - - -100 -50 50 100 Position, (m) Greater than the speed in trial Ris ..... to...
C programming 1) When setting a two-dimensional character array, how is the size (number of characters)...
C programming 1) When setting a two-dimensional character array, how is the size (number of characters) in the second dimension set? Select an answer: The number of elements are equal to the average size of all the strings. To the length of the longest string; you don't need to add one because the first array element is zero. To the length of the longest string, plus one for the null character. The second dimension is equal to the number of...
Question 4 1 pts You play a low G note on a guitar and the string...
Question 4 1 pts You play a low G note on a guitar and the string vibrates about 100 times every second. If your friend sings a G note that is 2 octaves higher than this, how many times per second will her vocal cords vibrate? (In both cases we are referring to the frequency of the fundamental) 25 50 100 200 300 400 Question 3 1 pts Your speaker level is set to 50 decibels. You turn it up...
1. (review: B&S 3.3) Two guitar strings are made of nylon and strung on a guitar. They are held at the same tension and have the same length and different fundamental frequencies. a) Write the equation (3.1), a compilation of Mersenne's laws, in the space below. b) In view of the above equation, what accounts for the different frequencies? c) How could you determine which one has the lower frequency by inspecting the strings? Explain your reasoning.
5. Imagine a string that is fixed at both ends (e.g. a guitar string). When plucked, the string forms a standing wave. The vertical displacement u of the string varies with position r and time t. Suppose u(x,t) = 2 sin(nx) sin(mt/2), for 0 x 1 and t 0. Convince yourself of the following: If we freeze the string in time, it will form a sine curve. Alternatively, if we instead focus on a single position, we will see the...
Joe, standing near a straight road, records the sound of the
horn of a car traveling at a constant speed. The recorded frequency
as a function of the car's position along the road for trials at
different car speeds is accurately graphed below.
Greater than Less than Equal to When the car is far
away, the average of the frequencies moving in and out is ..... the
frequency at rest.
Greater than Less than Equal to The distance of Joe from
the...
Amy, standing near a straight road, records the sound of the horn of a car traveling at a constant speed. The recorded frequency as a function of the car's position along the road for trials at different car speeds is accurately graphed below. 1050 - - - - - -.-.-.-.-.-.-.-.-.-.--E-- R . Observed Frequency, (Hz) - - - - - - - - - - -100 -50 50 100 Position, (m) Greater than the speed in trial Ris ..... to...
Question 4 1 pts You play a low G note on a guitar and the string vibrates about 100 times every second. If your friend sings a G note that is 2 octaves higher than this, how many times per second will her vocal cords vibrate? (In both cases we are referring to the frequency of the fundamental) 25 50 100 200 300 400 Question 3 1 pts Your speaker level is set to 50 decibels. You turn it up...
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