DSP

Order of convolution and multiplying
Hi all, I have three signals in the frequency domain, which arranged in mathematical way as follow: The first signal (named as M) is multiplied with a signal (named as R) that blocks some frequency components and transmits the others, and the result is convolved with the first signal (M). My question is, wh... 19 Jun 2008 23:58

How to add noise???
Dear all It seems I have forgot all my fundamentals. Can you please guide me on how to add noise to the system. So far I did simulations at baseband where we just map the data to symbols and add noise. i.e. for 1/2 rate convolution and 4-QAM modulation, SNR=Eb/NO=1/(sigma^2); and from this find the sigma and m... 19 Jun 2008 13:42

IIR phase compensator
I want to design an IIR notch filter with linear phase. It is pretty straight forward to design the IIR notch filter but I am not sure how to design the phase compensator(all pass IIR filter) that makes the overall phase of the system linear phase. Can someone throw a few pointers on this design? Many thanks ... 19 Jun 2008 01:15

Modification of signal using short term Fourier transform
I would like to do some signal modification applying all of pitch detection, pitch shifting, and filtering (which will depend on the pitch of the signal) using the short term Fourier transform. Sadly I haven't ever previously gone beyond simple filtering using the STFT. Is the following link a good place to start... 19 Jun 2008 01:15

mips estimation on pc
hi i would like to qualify the speed of an algorithm on a desktop PC. I know that a mips calculation is not really accurate but i just require something that will give a basic indication of speed so i can estimate and work on reducing the algorithm complexity in quite a formal. thanks ... 20 Jun 2008 14:18

messenger plus! live
Messenger Plus! Live is an add-on for Windows Live Messenger that adds tons of features and extras to the software. Extend the possibilities of Messenger and make your experience a lot more entertaining! For more on this subject check out this cool site www.msgpluslive.net ... 19 Jun 2008 01:15

Do I need to fix the non-matching analog connection in A/D process?
On Sat, 14 Jun 2008 05:03:19 -0500, "jtp_1960" <jtp_1960(a)hotmail.com> wrote: If you are really set on doing this in DSP, then by all means do so. I hope that you will report back with your results later. Greg Of course I will report back w/ some measures but, as I'm not very good in such type... 19 Jun 2008 01:15

non minimum phase systems
>Can someone explain the physical significance of why a non minimum phase system, say, a tail controlled missile takes a negative overshoot? Thanks K. But mathematically (transfer function per se)is the mercury thermometer system a non-minimum phase system.Perhaps I may have to get into heat transfer to kno... 19 Jun 2008 01:15

RAG FIR filter optimization
Greetings, Can anyone briefly explain (or point to a link or a sample program)the Reduced Adder Graph method used to generate Optimized filters(power of 2's coefficient method). Thanx in advance -Chivak ... 19 Jun 2008 01:15

Finding the phase of unknown signals in data
Hi, I have some data which contains the superposition of 2 signals and I am trying to determine any characteristics of the signals. I have already found their amplitudes and frequencies using a FFT, but Im not sure how to determine the phase of each, any help or prods in the right direction to look would be appre... 19 Jun 2008 01:15