Page 22 - form 5 physics chapter 1
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the pitch a low pitch sound corresponds to a low frequency of
relates to vibration.
frequency
To investigate the relationship between the amplitude and the loudness
of sound
The audio signal generator is switched on and the frequency of the
sound wave is adjusted to a suitable level. The loudness of the sound is
varied from a lot to a high level gradually. Observe the shape of the
sound wave displayed on the screen of oscilloscope.
Write: low / medium / high
Wave form Amplitude of Loudness of
sound
sound wave
The relation between the pitch and the frequency of sound
The audio signal is switched on and the loudness is adjusted to a
suitable level. The frequency of the sound is varied from low to high
gradually. The pitch of the sound that is heard and the form of the wave
displayed on the screen of the oscilloscope is observed.
Write: low / medium / high
Wave form Frequency of Pitch of sound
sound wave
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