Sound Vibration Speed and Characteristics

When a sound source vibrates faster, it affects the properties of the sound produced, specifically its frequency and pitch.

Frequency Explained

• Frequency is the measure of how quickly a source vibrates, counted as cycles or oscillations per second. It is measured in Hertz (Hz).
• A faster vibration rate directly corresponds to a higher frequency.

Pitch Explained

• Pitch is the perceived highness or lowness of a sound.
• Pitch is primarily determined by the frequency of the sound wave.
• Higher frequency sound waves are perceived as having a higher pitch.

Connecting Vibration, Frequency, and Pitch

Therefore, when the source vibrates faster:

• The frequency of the sound wave increases.
• The perceived pitch of the sound becomes higher.

Option 3 correctly states that the frequency and pitch become higher.