Sound Waves Quiz

What mathematical concept is used to represent time in the piecewise function?

• Cosine waves

• Sine waves

• Tangent waves

• Logarithmic waves

What is the second note in the sequence B A G?

• B

• A

• G

• C

What is the purpose of writing a piecewise function for the notes?

• To calculate the frequency

• To represent the notes with time

• To determine the pitch

• To find the rhythm

What is the period for the note G#?

• sin(369.99 · 2πt)

• sin(415.3 · 2πt)

• sin(349.23 · 2πt)

• sin(311.13 · 2πt)

Match the following frequencies with their corresponding sine wave expressions.

• G note frequency

• sin(349.23 · 2πt)

• F# note frequency

• sin(369.99 · 2πt)

• G# note frequency

• sin(392 · 2πt)

• F note frequency

• sin(415.3 · 2πt)

The period for the note A# is (a)  

• sin(261.63 · 2πt)
• sin(277.18 · 2πt)
• sin(415.3 · 2πt)
• sin(466.16 · 2πt)

The frequency used for the note B in the piecewise function is (a)   .

• 493.88 Hz
• 440 Hz
• 392 Hz
• 500 Hz

In the piecewise function, what is the time interval for the note B?

• [0, .5], [2, 2.5], [6, 6.5]

• [.5, 1], [2.5, 3], [5, 6], [6.5, 7]

• [1, 2], [3, 5], [7, 8]

• [0, 1], [2, 3], [4, 5]

Which note corresponds to the frequency 440 Hz?

• C

• B

• A

• D

What is the frequency of the note C#?

• 261.63 Hz

• 277.18 Hz

• 293.66 Hz

• 311.13 Hz