Question

We perceive a sound's fundamental frequency as its pitch.

A. True

B. False

Answer #1

A. True

We have learned that when we hear a periodic sound, the pitch we
perceive is based on the *fundamental frequency* of the
sound, rather than on any of the harmonics (also called "overtones"
or "partials") which may also be present in the signal. We also
know that the fundamental frequency is the *lowest* in
frequency of the harmonics (there are exceptions to this which we
will disregard for now) and it also has the greatest
*amplitude* of all the harmonics

Pitch is mainly related to the fundamental frequency. But what
other factors affect perceived pitch (what else affects the pitch
that we think we hear)?

Pitch is a subjective quality and it depends on how humans
process sound
True
False
1 points
QUESTION 2
Absolute pitch is the ability to name or reproduce a tone
without reference to an external standard.
True
False
1 points
QUESTION 3
A high pitch sound corresponds to a low frequency sound wave
True
False
1 points
QUESTION 4
Pitch is independent of the loudness of the sound.
True
False
1 points
QUESTION 5
The periodic...

A string of a violin vibrates in its fundamental mode of one
loop with frequency of 100 Hz. What will be the frequency of the
wave that will produce a three-loop pattern on the same string?

A typical steel B-string in a guitar resonates in its
fundamental frequency at 240 Hz. The length of the string is 0.600
m. What is the wave velocity in the string?
The tension in the above string is 81.2 N. Calculate the mass of
a 4 m long piece of the steel string.
What is the wavelength of the third harmonic of the guitar
string described above?

True or False: If we know the mean and the variance of the
normal distribution we know its shape.

The fundamental frequency of an organ pipe, closed at one end,
is 255.6 Hz.
a)What is the fundamental frequency of this organ pipe if the
temperature drops to 1.20°C? (Hz)
The fundamental frequency of an organ pipe, open at both ends,
is 278.9 Hz.
b) What is the fundamental frequency of this organ pipe if the
temperature drops to 1.00°C?

True or False? Greater compounding frequency will result in a
larger present value

Greater compounding frequency will result in a larger present
value.
True or false

1(a). (TRUE or FALSE?) The smallest compounding period is used
when we do continuous compounding.
1(b).(TRUE or FALSE?) The annuity is a series of unequal cash
flows, spaced unevenly over time.
1(c).(TRUE or FALSE?) Money grows over time when the interest
rate is zero.

QUESTION 30
True or False: We can include a categorical variable (such as
region) in a multivariate model in the same way we include a
continuous variable.
True
False
2.5 points
QUESTION 31
True or False: We fail to reject the null hypothesis if the test
statistic is greater than the critical value.
True
False
2.5 points
QUESTION 32
True or False: We necessarily do not have an omitted variable bias
problem the omitted variable is uncorrelated with...

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