| ??? 07/31/10 15:38 Read: times |
#177548 - Following Nyquist is the bare minimum Responding to: ???'s previous message |
Sonia Sanghvi said:
Maximum frequency is around 400Hz. So my sampling frequency should ideally be around 1Khz ( following the Nyquist criterion). That really depends on how stable you want the amplitude peak to become. Following the Nyquist criteria is the absolute minimum for detection, but will not give an accurate view of the amplitude always. Usually in practice, to get a good idea of the peak amplitudes of the waveform a sampling frequency will be about 8x as much as the original frequency. |
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