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https://opencores.org/ocsvn/biquad/biquad/trunk
[/] [biquad/] [web_uploads/] [index.shtml] - Blame information for rev 6
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<!--# include virtual="/ssi/ssi_start.shtml" -->
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<!--# set var="title" value="Biquad IIR Filter Core" -->
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<font size=+2 color=#bf0000><b>
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Project Name: Biquad IIR Filter Core
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</font></b><p>
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<font size=+1><b>
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Specifications:
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</b></font><p>
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<li>IIR filter with two poles and two zeros</<li>
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<li>Data width set by user</li>
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<li>Coefficient width set by user up to 16 bits</li>
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<li>Wishbone interface for read and write of filter coefficient registers</li>
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<li>Multiple filters can be combined to form filters with more than two poles and zeros</li><br><br><br>
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<font size=+1><b>
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Description:
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</b></font><p>
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The difference equation for the biquad filter is:<br><br>
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y[n] = b10*x[n] + b11*x[n-1] + b12*x[n-2] + a11*y[n-1] + a12*y[n-2]<br><br>
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This equation is implemented as shown below:
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<img src="bquad_blk.gif"><br><br>
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Specification in pdf format: <a href="biquad.pdf" target=_new>biquad.pdf</a><br><br>
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<font size=+1><b>
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Synthesis:
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</b></font><p><br>
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Synthesized with Synopsys FPGA Express version 2000.11-FE3.5.
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<font size=+1><b><br><br><br>
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Current Status:
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</b></font><p><br>
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Verilog <a href="vsource.html" target=_new>source</a> code available.
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<font size=+1><b><br><br><br>
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Author & Maintainer:
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</b></font><p><br>
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<ul><a href="mailto:ccox@opencores.org_NOSPAM">Chuck Cox</a></ul><br>
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If you use this core please let me know.
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