What is undulating as in a voice?

"Undulating" when describing a voice means that the pitch rises and falls in a smooth, wave-like motion. It's like a gentle, continuous up-and-down movement, not a sharp jump or a sudden drop.

Here are some examples:

* A soothing, undulating voice: Think of a calm speaker who uses soft, flowing tones, almost like a gentle lullaby.

* A dramatic, undulating voice: This voice might have a larger range of pitch, creating a more pronounced wave-like effect. It's often used for storytelling or to emphasize certain points.

Here's what it's NOT:

* Monotone: A monotone voice is flat and unchanging.

* Choppy: A choppy voice has abrupt jumps in pitch, like a staircase.

Overall, an undulating voice is pleasing to the ear because of its rhythmic and flowing nature. It can create a sense of calmness, drama, or even excitement depending on the context.