In digital communications, chirp spread spectrum (CSS) is a spread spectrum technique that uses wideband linear frequency modulated chirp pulses to encode information. A chirp is a sinusoidal signal whose frequency increases or decreases over a certain amount of time. Below is an example of an upchirp—as you can see, the frequency increases linearly over time.
Famous quotes containing the words chirp and/or spread:
“The small creatures chirp thinly through the dust, through the night.
O mother
What shall I cry?
We demand a committee, a representative committee, a committee of investigation
RESIGN RESIGN RESIGN”
—T.S. (Thomas Stearns)
“There’s Margaret and Marjorie and Dorothy and Nan,
A Daphne and a Mary who live in privacy;
One’s had her fill of lovers, another’s had but one,
Another boasts, “I pick and choose and have but two or three.”
If head and limb have beauty and the instep’s high and light
They can spread out what sail they please for all I have to say....”
—William Butler Yeats (1865–1939)