Pitch and Loudness (HSC SSCE Physics): Quizzes

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Pitch and Loudness
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What does the pitch of a sound describe?

How high or low a note sounds

What does an oscilloscope display show?

Amplitude versus time

What does the vertical axis on an oscilloscope display represent?

Amplitude (pressure variations)

What does the horizontal axis on an oscilloscope display represent?

Time

How does increasing the frequency of a sound affect its pitch?

Higher frequency produces higher pitch

How does increasing amplitude affect the loudness of a sound?

Greater amplitude produces louder sound

What is the time-base scale on an oscilloscope?

Calibration showing time each cm represents

How do you calculate the period TT from an oscilloscope display?

T=T = distance (cm) ×\times time-base scale

What is the formula to calculate frequency from period?

f=1Tf = \frac{1}{T}

If time-base is 2.02.0 ms cm−1^{-1} and crest distance is 4.04.0 cm, what is the period?

8.08.0 ms

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