From: Shenzhi on 1 Apr 2010 08:33 Hi,friends! I have a difficulty in naming a portion of the FIR filter. For a simple example: y(n)=h(2)*x(n-2)+h(1)*x(n-1)+h(0)*x(n) How can I name a portion of "h(2)*x(n-2)" or "h(1)*x(n-1)"? Could it be named as "partial product" or some other names? Who can give me an appropriate name to it? Shenzhi From: Tim Wescott on 1 Apr 2010 09:38 Shenzhi wrote:> Hi,friends! > > I have a difficulty in naming a portion of the FIR filter. > For a simple example: y(n)=h(2)*x(n-2)+h(1)*x(n-1)+h(0)*x(n) > How can I name a portion of "h(2)*x(n-2)" or "h(1)*x(n-1)"? > Could it be named as "partial product" or some other names? > Who can give me an appropriate name to it? How about "terms" -- "two clock delay term", or "x(n-2) term". Or "coefficient" -- if you were to put the filter into the z domain you'd have a polynomial in z^-1, i.e. Y = h(2) * X * z^-2 + h(1) * X * z^-1 + h(0) * X. Then h(0) would become the zero-order coefficient, h(1) would be come the first-order coefficient, etc. -- Tim Wescott Control system and signal processing consulting www.wescottdesign.com From: Shenzhi on 1 Apr 2010 22:20 Thanks, Tim! "Tim Wescott" :B_udnR-cpspZPCnWnZ2dnUVZ_t6dnZ2d(a)web-ster.com...> Shenzhi wrote: >> Hi,friends! >> >> I have a difficulty in naming a portion of the FIR filter. >> For a simple example: y(n)=h(2)*x(n-2)+h(1)*x(n-1)+h(0)*x(n) >> How can I name a portion of "h(2)*x(n-2)" or "h(1)*x(n-1)"? >> Could it be named as "partial product" or some other names? >> Who can give me an appropriate name to it? > > How about "terms" -- "two clock delay term", or "x(n-2) term". > > Or "coefficient" -- if you were to put the filter into the z domain you'd > have a polynomial in z^-1, i.e. Y = h(2) * X * z^-2 + h(1) * X * z^-1 + > h(0) * X. Then h(0) would become the zero-order coefficient, h(1) would > be come the first-order coefficient, etc. > > -- > Tim Wescott > Control system and signal processing consulting > www.wescottdesign.com From: John Monro on 2 Apr 2010 00:44 Shenzhi wrote:> Thanks, Tim! > > "Tim Wescott" > :B_udnR-cpspZPCnWnZ2dnUVZ_t6dnZ2d(a)web-ster.com... >> Shenzhi wrote: >>> Hi,friends! >>> >>> I have a difficulty in naming a portion of the FIR filter. >>> For a simple example: y(n)=h(2)*x(n-2)+h(1)*x(n-1)+h(0)*x(n) >>> How can I name a portion of "h(2)*x(n-2)" or "h(1)*x(n-1)"? >>> Could it be named as "partial product" or some other names? >>> Who can give me an appropriate name to it? >> How about "terms" -- "two clock delay term", or "x(n-2) term". >> >> Or "coefficient" -- if you were to put the filter into the z domain you'd >> have a polynomial in z^-1, i.e. Y = h(2) * X * z^-2 + h(1) * X * z^-1 + >> h(0) * X. Then h(0) would become the zero-order coefficient, h(1) would >> be come the first-order coefficient, etc. >> >> -- >> Tim Wescott >> Control system and signal processing consulting >> www.wescottdesign.com > > How about a "MAC sequence"? The whole sequence from n=0 to n=(N-1) would then of course be a "Big MAC" Regards, John From: Al Clark on 2 Apr 2010 08:57 John Monro wrote in news:4bb57623\$0\$16520\$afc38c87(a)news.optusnet.com.au: > Shenzhi wrote: >> Thanks, Tim! >> >> "Tim Wescott" >> :B_udnR-cpspZPCnWnZ2dnUVZ_t6dnZ2d(a)web-ster.com... >>> Shenzhi wrote: >>>> Hi,friends! >>>> >>>> I have a difficulty in naming a portion of the FIR filter. >>>> For a simple example: y(n)=h(2)*x(n-2)+h(1)*x(n-1)+h(0)*x(n) >>>> How can I name a portion of "h(2)*x(n-2)" or "h(1)*x(n-1)"? >>>> Could it be named as "partial product" or some other names? >>>> Who can give me an appropriate name to it? >>> How about "terms" -- "two clock delay term", or "x(n-2) term". >>> >>> Or "coefficient" -- if you were to put the filter into the z domain >>> you'd have a polynomial in z^-1, i.e. Y = h(2) * X * z^-2 + h(1) * X * >>> z^-1 + h(0) * X. Then h(0) would become the zero-order coefficient, >>> h(1) would be come the first-order coefficient, etc. >>> >>> -- >>> Tim Wescott >>> Control system and signal processing consulting >>> www.wescottdesign.com >> >> > > How about a "MAC sequence"? > The whole sequence from n=0 to n=(N-1) > would then of course be a "Big MAC" > > Regards, > John > And do you want FIRs with that? Sorry.... Al