Gerald, At a given sample rate, you'll get the sharpest filters (and the greatest latency) with the highest DSP buffer setting. Stated another way, for a given DSP buffer setting, the slower the sample rate -- the sharper the filter. However, the shape factor of the filter will be constant as long as the *ratio* between sample rate and DSP buffers is maintained. For example, the following combinations would produce the same filter shape factor and latency: 192K sample rate w/ DSP buffer = 4096 96K sample rate w/ DSP buffer = 2048 48K sample rate w/ DSP buffer = 1024
I operate primarly cw, and operate my FA-66 at a 48K sample rate with the DSP buffers set at 4096, and the narrow filters are amazing! 73, Dale WA8SRA Gerald Capodieci wrote: >Is it true that a sample rate of 48000 allows sharper skirts on the receive >filters? >-------------- next part -------------- >An HTML attachment was scrubbed... >URL: >http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070215/e4dc0a92/attachment.html > >_______________________________________________ >FlexRadio mailing list >[email protected] >http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ >FlexRadio Homepage: http://www.flex-radio.com/ > >FlexRadio Knowledge Base: http://kb.flex-radio.com/ > > > > _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
