The Doctor uses a ring modulator to alter his voice, the same device used to create the voice of the Daleks.

Ellis also used the ring modulator on several occasions, which was built for him by Tom Oberheim.

The Sonic Six also features a ring modulator which allows a player to produce non-chromatic sounds.

Other sound processing effects such as ring modulators may be encountered.

A ring modulator is an effects unit working on this principle.

It is this that gives the ring modulator its unique tones.

Most of these sounds were generated using an electronic circuit called a "ring modulator".

Most of the tonalities were generated with a circuit called a ring modulator.

The threat, a rare vocal contribution by Nick Mason, was recorded through a ring modulator and slowed down to create an eerie effect.

Oberheim also built a ring modulator for Don Ellis.