Name the characteristic of sound in relation to its waveform.

Explanation

### Step-by-Step Text Solution:

1. **Understanding the Question**: The question asks for the characteristic of sound that relates to its waveform. This implies we need to identify a property of sound that can be described or defined through its waveform.

2. **Identifying Sound Characteristics**: Sound has several characteristics, including pitch, loudness, and quality. Among these, the quality of sound is specifically related to its waveform.

3. **Defining Quality of Sound**: The quality of sound, also known as "timbre," refers to the distinctiveness of a sound that allows us to differentiate between different sources of sound, even if they are producing the same pitch and loudness.

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