Howtosignalprocessing
- What does a Nyquist filter do?
- What is a Nyquist filter in audio?
- What is Nyquist criteria for sampling?
- What is Nyquist criteria in digital communication?
What does a Nyquist filter do?
A Nyquist filter is an electronic filter used in TV receivers to equalize the video characteristics. The filter is named after the Swedish–US engineer Harry Nyquist (1889–1976).
What is a Nyquist filter in audio?
Whenever audio is up or down converted from one sample rate to another a filter is needed to remove frequencies that are above half the lowest sample rate of the two, which is called the 'Nyquist frequency'. The up- and downsampling filters of the MU1 have extreme resolution in all dimensions.
What is Nyquist criteria for sampling?
Simply stated, the Nyquist criterion requires that the sampling frequency be at least twice the highest frequency contained in the signal, or information about the signal will be lost. If the sampling frequency is less than twice the maximum analog signal frequency, a phenomenon known as aliasing will occur.
What is Nyquist criteria in digital communication?
The Nyquist criterion states that a repetitive waveform can be correctly reconstructed provided that the sampling frequency is greater than double the highest frequency to be sampled.
