Discuss how loudness depends on amplitude.

Explanation

### Step-by-Step Solution

1. **Understanding Loudness**:
- Loudness is a property of sound that allows us to perceive how strong or intense a sound is. It is similar to other properties of sound such as pitch and timbre.

2. **Loudness and Frequency**:
- Loudness helps us distinguish between sounds that have the same frequency. For example, two sounds can have the same pitch (frequency) but can be perceived as different in loudness.

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