So you "have a quadrature FM signal that is modulated on a low frequency IF" which sounds to me that you have both \$i[n]\$ and \$q[n]\$ of a complex signal that...

Okay, do you know what "Convolutional Reverb" is? What "Fast Convolution" is?Do you know what the Schroeder Reverb model is or the Jot Reverb model? There might...

it turns out that *every* digital filter is a comb filter (of sorts). if the digital filter is a LPF, you will see comb teeth at every integer multiple of the...

i do not see why the Doppler shift effect should be any different for the modulation than it is for the carrier. the whole signal gets scaled in time by a single...

okay, i understand this statement: "I have used a Farrow interpolator to do fractional rate sample rate conversion on only one of the signals..." but i am curious...

if you're interpolating (or sample rate converting) the stretched replica to make it the same length as the original signal segment, how do you know what the sample...

well, i don't have the fixed=point toolbox, but if you're plagued with limit cycles due to round-to-nearest quantization, my suggestion is that you use a technique...

But then you have to toss in the modulo indexing in order to use the theorems in your "(i.e., discrete Fourier transform)". That modulo indexing makes it periodic.Uniform...

Stephan, your implementation of \( \LaTeX \) here leaves a bit to be desired. It works erratically. especially when i edit a post that had math previously appearing.if...

Well, this is an old issue with me and Eric that dates back to the mid 1990s on comp.dsp . I must differ with Eric where he writes:"There do not need to be any...

I don't see any truncation or cast to a fixed-point value or any nonlinearity. So I don't understand what the source of any limit cycle would be.At least, in my...

The very basics of the LMS adaptive filter are not all that difficult to understand. Perhaps ask a question about it at the Signal Processing Stack Exchange and...

yeah, what John says. because reducing 1024 degrees of freedom down to 3 degrees of freedom might not so good. even if your FIR taps are not adjacent to each...

i do now. but it looks a little Maclaurenish to me. since, ultimately, the power series will have to be finite (which is a polynomial), you will want (slightly) different...

but can't you develop a Cordic operation based on 2^x instead of e^x just as efficiently? there might be an internal scaling operation in there that would be different...

it just seems to me, Brian, that especially for a fixed-point implementation, that 2^x is the simplest primitive and then use A^x = 2^(x*log2(A)).When it's base...

In this stackexchange answer are the coefficients for some short finite-order polynomials for evaluating (at a pretty good accuracy) a bunch of transcendental functions...

well, it appears to me that you will need to perform Asynchronous Sample Rate Conversion (ASRC). there are chips to do that, but if you have the sufficient unused...

Okay, so I know the SHArC core instruction set pretty well and some of the key features that existed in the SHArC back in the olden daze (like 1995 with version...

Do you have an ICE-1000 or some JTAG emulator with this EZKIT?If you don't use a JTAG emulator, I s'pose ADI provides some means of loading and running code, but...

"If the DTFT of a sequence has a bandwidth omega_max > pi/2, a downsampling by a factor of 2 is surely going to cause aliasing in the resulting DTFT."Yes it will. ...

Similarly to some filterbank and wavelet transforms, there is perfect reconstruction because the aliases have a way of killing each other off.But when thinking about...

I still have yet to really do any work on an ARM even though I am told that some C code I wrote (and tested with Xcode) found its application on a phone running...

I am only responding to the title of the post.It seems to me that not very many books that describe fast convolution consider the optimal size for the FFT and most...

There is more to the various "analog effects" than filters and convolution. If you're trying to simulate a guitar amplifier with different cabinets, perhaps the...

no. it's an alternative way of doing it. using polyphase FIR, you have coefficients for an FIR filter for every fractional delay you want.Let's say your FIR...

i have never heard of the "Itakura-saito distance" before. i did know about the Log-Spectral distance which is in dB.the form of this the integrand is (x-1) -...

I dunno. Sometimes mathematics is useful for economic analysis and projections that should influence politics. It's politically useful to understand a runaway...

Not only is knowledge in DSP **very** useful designing digital controllers, but Control Theory has some concepts that are useful for DSPers that never got paid...

So my understanding is that you want a fractional-sample delay, where you specify in advance how much delay you want.1. If the delay is a fraction of a sample less...

yeah, it was Sokolich (who was around the alt.sci.physics.acoustics newsgroup when it was active) not the goofy brit named Gareth.didn't remember that i was scraping...

well, i never much hung around these specific parts. this might be my very first DSPrelated post.i remember Bob Cain from the comp.dsp daze. if i remember right,...

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