nyquist frequency वाक्य
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- As a result, the Doppler measurement is only non-ambiguous if the Doppler frequency shift is less than half of F _ R, called the Nyquist frequency, since the returned frequency otherwise cannot be distinguished from shifting of a harmonic frequency above or below, thus requiring:
- If you are resampling something below a certain frequency ( i . e . scaling an image down ), applying a sinc convolution filter beforehand to the original would prevent aliasing of frequencies greater than the new nyquist frequency .-Rainwarrior 07 : 11, 18 September 2006 ( UTC)
- For example, using " n " = 4, the FM band spectrum fits easily between 1.5 and 2.0 times the sampling rate, for a sampling rate near 56 MHz ( multiples of the Nyquist frequency being 28, 56, 84, 112, etc . ).
- Linn acknowledged that his lack of audio engineering know-how may have contributed to his drum machine's unique sound-many of the samples contain playback frequencies above the Nyquist frequency which, although it results in aliasing under normal circumstances, contributes much to the " sizzle " of the LM-1's sound.
- The goal of an anti-aliasing filter is to greatly reduce frequencies above a certain limit, known as the Nyquist frequency, so that the signal will be accurately represented by its samples, or nearly so, in accordance with the sampling theorem; there are many different choices of detailed algorithm, with different filter transfer functions.
- It's only a true fractal if the spectrum follows that function from 0 all the way to infinite frequency, which can't happen with digital data, but if it follows it pretty well out to the Nyquist frequency that's good evidence . Keenan Pepper 14 : 27, 30 November 2005 ( UTC)
- The bilinear transform is an alternative to impulse invariance that uses a different mapping that maps the continuous-time system's frequency response, out to infinite frequency, into the range of frequencies up to the Nyquist frequency in the discrete-time case, as opposed to mapping frequencies linearly with circular overlap as impulse invariance does.
- :One thing to consider is Nyquist frequency : for example, if you care about sound components with frequencies > 8kHz, you really need > 16kHz sampling but if you can convince yourself that you only care about somewhat below 8kHz, you can probably get away with 16kHz sampling . talk ) 07 : 41, 11 January 2009 ( UTC)
- Quantization error is distributed from DC to the Nyquist frequency, consequently if part of the ADC's bandwidth is not used ( as in oversampling ), some of the quantization error will fall out of band, effectively improving the SQNR . In an oversampled system, noise shaping can be used to further increase SQNR by forcing more quantization error out of the band.
- The frequency response of the discrete-time system will be a sum of shifted copies of the frequency response of the continuous-time system; if the continuous-time system is approximately band-limited to a frequency less than the Nyquist frequency of the sampling, then the frequency response of the discrete-time system will be approximately equal to it for frequencies below the Nyquist frequency.
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