Thanks, guys. It's been jogged. The value of the number was obvious. I'd forgotten about the roll off.
Richard W5SXD Frank Brickle <[EMAIL PROTECTED]> wrote: (05/04/2006 22:51) >44100 is the CD data rate (48000 is the DAT rate) > >44100 complex samples/sec -> +/-22050Hz passband > >22050/2 = 11025 -> center of positive freqs > >You want IF (11025) rather than baseband because soundcards roll off >towards 0Hz. > >That jog it? > >73 >Frank >AB2KT > >richard allen wrote: >> Would someone please refresh my memory as to the derivation of the 11. >> 025 kHz value? >> >> Richard, W5SXD >> >> _______________________________________________ >> FlexRadio mailing list >> FlexRadio@flex-radio.biz >> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >> Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ >> FlexRadio Homepage: http://www.flex-radio.com >> >> _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
