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Minimalist high performance Farrow Filters

Started by napierm 5 months ago11 replieslatest reply 1 month ago198 views
Hello,I have an application where I need to resample from one sample rate to another.  Pretty sure this will need a delay type or Farrow filter.  The ones I am...

Far Off Topic: A Simple Geometry Problem That Had Me "Going in Circles"

Started by Rick Lyons 7 years ago13 replieslatest reply 1 month ago708 views
At a garage sale recently I bought the book "More Marilyn, Some Like It Bright!" for one U.S. dollar. In that book the following simple geometry problem was posedThe...

Fractional order IIR

Started by RoelVugts 1 month ago11 replieslatest reply 1 month ago225 views
Hi,I would like to create a fractional order allpass filter but i'm not sure how to do this or if it is even possible.I currently have a 10th order allpass filter...

How to design cic digital filter for sigma delta adc

Started by ahhh 9 months ago9 replieslatest reply 2 months ago310 views
My SD ADC modulator has a sampling frequency of 1.024 MHz, an input bandwidth of 1 kHz, an oversampling ratio of 512, a single-loop second-order structure, and a...

Using STO as a proxy for accurate CFO compensation

Started by robhhh6 3 months ago6 replieslatest reply 3 months ago124 views
Hello!I have an OFDM-based system and I am trying to accurately estimate the Carrier Frequency Offset (CFO) and the Sampling Time Offset (STO).I use the "traditional"...

Detecting Peaks (Part Deux)

Started by bigalnz 3 months ago9 replieslatest reply 3 months ago238 views
A question about peak detection for a transient (17ms) CW beep on channelized chunks (0.3 sec chunks) from a SDR.My current approach is to get the Power Spectral...

Issues regarding the implementation of integrator in GMSK modulator

Started by Souparnika512 6 months ago11 replieslatest reply 3 months ago171 views
I'm trying to implement a GMSK modulator using simulink. Initially, I've passed the signal to a Gaussian filter, then it is passed to an integrator, but I'm not...

FPGA dev kit

Started by Robert Wolfe 3 months ago4 replieslatest reply 3 months ago242 views
Hello,I've been wanting to get my feet wet in FPGA DSP, after many years strictly firmware (C, C++, assembly), including since a good deal of DSP seems to be migrating...

Setting prominence in signal.find_peaks

Started by bigalnz 4 months ago3 replieslatest reply 3 months ago157 views
I am rocessing a radio signals on a Rpi5 with a Software Defined Radio (SDR) in python and need to adaptively set the prominence parameter of scipy signal.find_peaks.The...

Quantizing the feedback coefficient in the Goertzel algorithm

Started by gretzteam 2 years ago3 replieslatest reply 3 months ago246 views
The value of the feedback coefficient in the Goertzel algorithm it given by:c = 2*cos( 2*pi*k/N); where k is the bin number and N is the number of points.Here...

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