# Pitch, Loudness and Frequency

> Sound is caused by vibrations. These vibrations travel through a medium as longitudinal waves, causing parts of our ear to vibrate so we can hear and interpret the sound. Two of the most important…

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## Full notes

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## More in Sound waves

- [Properties of Sound Waves and Echoes](https://www.hlayiso.com/grade-11/technical-sciences/notes/sound-waves/properties-of-sound-waves-and-echoes) — Previous section
- [All Sound waves sections](https://www.hlayiso.com/grade-11/technical-sciences/notes/sound-waves)

## Frequently asked questions

### What will I learn in "Pitch, Loudness and Frequency"?

This section covers Pitch, Loudness and Frequency as part of Sound waves in Grade 11 Technical Sciences. You'll find clear explanations, worked examples, and key definitions aligned to the CAPS curriculum.

### Is this section aligned with the CAPS curriculum?

Yes. All notes on Hlayiso, including "Pitch, Loudness and Frequency", are written against the official CAPS curriculum and ATP for Grade 11 Technical Sciences.

### What should I study after "Pitch, Loudness and Frequency"?

Continue with the next section in Sound waves, or test your understanding with the interactive quiz linked to this section.

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