On Fri, 16 Jan 2004 11:54:46 -0500, Jerry Avins <jya@ieee.org> wrote:>Rick Lyons wrote: > >> On Fri, 16 Jan 2004 03:01:04 GMT, Randy Yates <yates@ieee.org> wrote: >> >> (snipped) >> >>>>Hi Fred, >>>> yep, the delay through a linear-phase nonrecursive >>>>FIR filter is the (# of taps -1)/2. >>> >>>What about this filter: >>> >>>h[0] = 0 >>>h[1] = 0 >>>. >>>. >>>. >>>h[30] = 0 >>>h[31] = 1 >>> >>>??? This filter has 32 taps and its delay is 32 taps. It is also >>>linear-phase and FIR/nonrecursive. >> >> >> Oh shoot. Another "Yates Trick Question"!! >> >> Neat. >> >> Isn't its delay 31 samples (instead of 32)? > >Quibble, quibble! (You're right of course.) > >> I'll have to think about how that filter could >> have linear phase. Sheece. > >What's to think about? The output is a delayed replica of the input. >Constant time delay <--> Linear phase > >JerryJerry, did I ever tell you that "sometimes you tick me off." You see things, often so quickly, that I just don't see. [-Rick-]
Few taps Filters for FSK?
Started by ●January 9, 2004
Reply by ●January 17, 20042004-01-17
Reply by ●January 17, 20042004-01-17
Rick Lyons wrote: ...> Jerry, did I ever tell you that "sometimes you > tick me off." You see things, often so quickly, > that I just don't see. > > [-Rick-]You know too much, Rick. Sometimes ignorance is a blessing. Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
