When two simple tones are put together they create a complex tone.

The simple tones of an instrument are called harmonics or overtones.

The first experimental systems were built over 30 years ago, although these first versions only played simple tones.

Before a pause, short vowels carrying a single, simple tone are devoiced.

Sometimes there is a simple, not very deep tone that rings true.

The entrance also sets the simple yet luxurious tone found throughout the apartment.

For sounds, frequencies are the same as simple tones.

This word is sometimes abbreviated to a simple high tone.

"I knew I would be," she said, her tone quiet, simple.

They range from highly elaborate chants to simple reciting tones.