music-dsp@music.columbia.edu wrote: >--===============8880529654532063245== >Content-Transfer-Encoding: quoted-printable
As far as the amount of space used by a filter or NCO or other component, this will depend of the manufacturer and the model of the FPGA, FPGAs are not all alike. However, a good thing about FPGAs is the ability to reuse logic such that one hardware filter can be used more than once to implement more than one filter. And if the state machine is smart enough, each of those filters can have whatever parameters you want. All of my work was 36 bit fixed point as float or double was too real-estate expensive and was also slower than the simple integer arithmetic used for fixed point. >On Thu, Sep 14, 2017 at 6:53 PM Evan Balster <e...@imitone.com> wrote: > >> Hey, Theo =E2=80=94 >> >> Rather than expensive math library calls, I'd be interested to see result= >s >> from an experiment with linear filtering. How much space does a biquad >> filter take up? What about a delay line? How much does that decrease wh= >en >> you drop to single-precision? Can you disable denormals to save even mor= >e >> space? >> >> =E2=80=93 Evan Balster >> creator of imitone <http://imitone.com> >> >> On Thu, Sep 14, 2017 at 4:02 PM, robert bristow-johnson < >> r...@audioimagination.com> wrote: >> >>> >>> >>> well, i know of at least one company that uses an FPGA to replace the >>> ASIC they used to use. they use it to fetch samples, interpolate and lo= >op. >>> also to do some post-processing DSP to the note. >>> >>> >>> >>> -- >>> >>> r b-j r...@audioimagination.com >>> >>> "Imagination is more important than knowledge." >>> >>> _______________________________________________ >>> dupswapdrop: music-dsp mailing list >>> music-dsp@music.columbia.edu >>> https://lists.columbia.edu/mailman/listinfo/music-dsp >>> >> >> _______________________________________________ >> dupswapdrop: music-dsp mailing list >> music-dsp@music.columbia.edu >> https://lists.columbia.edu/mailman/listinfo/music-dsp > -- ScottG ________________________________________________________________________ -- Scott Gravenhorst -- http://scott.joviansynth.com/ -- When the going gets tough, the tough use the command line. -- Matt 21:22 _______________________________________________ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
