Howtosignalprocessing
- What is the derivative of frequency?
- How do you convert a signal to the frequency domain?
- How do you define frequency domain?
- How to achieve the blurring of the image in the frequency domain?
What is the derivative of frequency?
The derivative of a sine wave of frequency f is a phase-shifted sine wave, or cosine wave, of the same frequency and with an amplitude that is proportional to f, as can be demonstrated in Wolfram Alpha.
How do you convert a signal to the frequency domain?
A signal can be converted between the time and frequency domains with a pair of mathematical operators called a transform. An example is the Fourier transform, which decomposes a function into the sum of a (potentially infinite) number of sine wave frequency components.
How do you define frequency domain?
The Frequency Domain refers to the analytic space in which mathematical functions or signals are conveyed in terms of frequency, rather than time. For example, where a time-domain graph may display changes over time, a frequency-domain graph displays how much of the signal is present among each given frequency band.
How to achieve the blurring of the image in the frequency domain?
Filtering. Low pass filtering involves the elimination of the high frequency components in the image. It results in blurring of the image (and thus a reduction in sharp transitions associated with noise).
