View source for Filters in C

*[http://electronicdesign.com/article/analog-and-mixed-signal/use-software-filters-to-reduce-adc-noise20259 electronic design:Use Software Filters To Reduce ADC Noise]
**[http://archive.electronicdesign.com/cluster/planetee/files/29/20259/1215analogcypressfig1_web.jpg Feedback filter is IIR]
*[http://stackoverflow.com/questions/8079526/lowpass-and-high-pass-filter-in-c-sharp stackoverflow: lowpass and high pass filter in C#]

*[http://stackoverflow.com/questions/344343/low-pass-filter-software stackoverflow: Low pass filter software?]
*[http://stackoverflow.com/questions/6664686/a-c-library-for-iir-filter A C++ library for IIR filter]
*[https://github.com/vinniefalco/DSPFilters github: vinniefalco / DSPFilters]
*[http://gnuradio.org/redmine/projects/gnuradio/wiki gnuradio]
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*[http://rosettacode.org/wiki/Averages/Simple_moving_average Averages/Simple moving average]


==IIR==
*[https://ccrma.stanford.edu/~jos/fp/Definition_Simplest_Low_Pass.html Stanford: Definition of the Simplest Low-Pass] Read this first to understand that z-1 is the previous value
*[http://en.wikipedia.org/wiki/Infinite_impulse_response wikipedia: Infinite impulse response]


==University of York==
*[http://www-users.cs.york.ac.uk/~fisher/mkfilter/trad.html Butterworth / Bessel / Chebyshev Filters]<span style="background:#00FFFF">  CALCULATOR PRODUCES ANSI-C</span>
**Check the graph, response is calculated upto 1/2 of normalized sampling frequency
*[http://www-users.cs.york.ac.uk/~fisher/mkfilter/ more filters]
*Same calculators also in this site [http://www.schwietering.com/jayduino/index.html Jayduino]
*For passive filter York calculator go to [[Passive filter calculators]]

==Cornell==
*[https://instruct1.cit.cornell.edu/courses/ee476/Math/DigitalFiltersVersion2.pdf Digital Filtering for Atmel Mega32 (Version 2) - Cornell University]


==Atmel==
*[http://www.atmel.com/Images/doc2527.pdf AVR223: Digital Filters with AVR ]

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