Because the intensity autocorrelation ignores the temporal phase of pulse ( b ) that is due to the instantaneous frequency sweep ( chirp ), both pulses yield the same intensity autocorrelation.
12.
As was the case for the Linear Chirp, the instantaneous frequency of the Exponential Chirp consists of the fundamental frequency f ( t ) = f _ 0 k ^ t accompanied by additional harmonics.
13.
It also enables us to represent the amplitude and the instantaneous frequency as functions of time in a three-dimensional plot, in which the amplitude can be contoured on the frequency-time plane.
14.
Oh, you can calculate something you might consider calling an " instantaneous frequency ", but really that frequency is over some specific window, and " not " for that particular time-point.
15.
A rapidly changing \ varphi _ n ( t ) \ means that the instantaneous frequency for that partial is severely detuned from the integer harmonic value which would mean that x ( t ) \ is not quasiperiodic.
16.
In telecommunications and signal processing, "'frequency modulation "'( "'FM "') is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave.
17.
The result is an ability to capture time-frequency localization to make the concept of instantaneous frequency and time relevant ( the concept of instantaneous frequency is otherwise abstract or difficult to define for all but monocomponent signals ).
18.
The result is an ability to capture time-frequency localization to make the concept of instantaneous frequency and time relevant ( the concept of instantaneous frequency is otherwise abstract or difficult to define for all but monocomponent signals ).
19.
In analog frequency modulation, such as FM radio broadcasting of an audio signal representing voice or music, the instantaneous frequency deviation, the difference between the frequency of the carrier and its center frequency, is proportional to the modulating signal.
20.
However, when the phase abruptly changes by 180 degrees, the instantaneous frequency briefly halves and then the black and white ('V') part of the signal catches a glimpse of the colour carrier and displays either a dark or a light line.
