Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!udel!rochester!kodak!ispd-newsserver!atexnet!munsell!ada
From: ada@munsell.UUCP (Andy Adams)
Newsgroups: comp.dsp
Subject: Digital Filter Design Software
Keywords: DSP, FIR, Filter Design
Message-ID: <2345@gonzales.munsell.UUCP>
Date: 26 Mar 91 21:06:37 GMT
Organization: Advanced Electronic Systems, Bedford, MA
Lines: 38


        I'm currently involved in FIR digital filter design.
        I've been using the CARL digital filter design software
        by Mcclellan and Parks designed some 10 years ago. 

        I am trying to design fairly large (16->32 tap) FIR
        filters for image sharpness correction/enhancement. Ideally,
        I would like to be able to specify filter gains at various
        frequencies and have the program optimally design the coeffs.
        The band-edge, band-gain, band-ripple approach of CARL
        seems to be very awkward and unpredictable for this 
        type of filter design. 

        I'm also designing very large (256->1024) tap interpolation
        filters. CARL is limited to 128 coeffs.

        If anybody knows of any more recent offerings or newer
        algorithms for filter design/analysis software, please 
        post or e-mail some recommendations.

        I've seen some references to Gabriel from UC Berkley.
        Is this any good? How do I obtain it? Does it run on a Sun?
        Can I ftp something??

        I realize this has probably been asked in the past, but
        I haven't captured the info.

        I would prefer that to run on Sun workstation (Sun3 or Sparc).

                Thanks much,
        
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Andy Adams, KEPS Inc.           |internet: ada@epps.kodak.com
an Eastman Kodak Company        |
164 Lexington Rd.               |
Billerica, Ma. 01821            |
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