The characteristic directional pattern of a pure pressure-gradient microphone is like a figure-8.

His work is simple but suggests motion with vivid colors and directional patterns.

It originally had a power of 5,000 watts full-time and used a single directional pattern at all times.

In 1977, the station increased its daytime power to 50,000 watts, using a different directional pattern than the one now used only at night.

The station ran 10,000 watts of power in a directional pattern until 2006.

The nighttime directional pattern was reworked to use the four remaining towers.

The directional pattern of the antenna will be changed.

They decided to offer all three of those two models' directional patterns in a single microphone.

The station was granted a construction for the originally approved power, directional pattern, and tower height on May 20, 2010.

Colored circles in the walls seemed to form directional patterns, most leading to his left.