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Discussion Groups | Analog Devices DSPs | sampling rate
Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).
sampling rate - alon andorn - Jun 24 0:38:00 2003
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Hi Im using sharc 21060 . I need to sample my signal at a rate of 250Hz . What is much easier and accurate? Using the codec at 8k sample rate and taking every 32 sample ignoring the other 31 samples. or using a timer interrupt. Thanx yuval |
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Re: sampling rate - Mike Rosing - Jun 24 2:28:00 2003
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On Mon, 23 Jun 2003, alon andorn wrote: > Hi > Im using sharc 21060 . I need to sample my signal at a rate of 250Hz . > > What is much easier and accurate? > > Using the codec at 8k sample rate and taking every 32 sample ignoring the other 31 samples. > or using a timer interrupt. Taking your 32 samples and averaging them down to one sample will be more accurate. Using the timer should be easier. How good of an analog filter do you have going into the codec? Patience, persistence, truth, Dr. mike |
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