Reflected radiation from the ground plane also acts to cancel out the direct signal.

They provide a clear, direct signal that a high-energy wave is passing, he and other experts said.

There was no direct signal when the injection started, but he blinked and moved his lips, his eyes raised toward the ceiling.

No, what I am looking at are the first direct signals to reach me from the dark constellation of Serafin.

His actions were a direct signal: Parando knew which judges really decided here.

The reflected signals arrive a fraction of a second later than the direct signal because they travel farther.

She was holding it leashed: Max was getting no direct signals.

In order to produce a reverberation effect we must mix the direct signal with several delayed versions of itself.

One can then use this direct signal as a near-perfect reference with which to find any differences in frequency response.

"This is a clear, direct signal," the Republican said.