Forums Search for: Undersampling
Goertzel Algorithm using undersampling ?
inHi guys, I have recently read an great article about Goertzel Algorithm...
Hi guys, I have recently read an great article about Goertzel Algorithm at https://courses.cs.washington.edu/courses/cse466/12au/calendar/Goertzel-EETimes.pdf I thought you could help me a bit now. I'm building laser rangefinder which use FFT to calculate distance. Firstly I thought I need to implement FFT in code and then look for highest bin in the spectrum to calculate it's phase ( will hav...
undersampling and FFTW
inHello, I have a problem with my fftw complex transform (1d) when I want to undersample my signal. I start with initial signal (Dimension...
Hello, I have a problem with my fftw complex transform (1d) when I want to undersample my signal. I start with initial signal (Dimension 16384points), and get the FFT of this signal in complex with fftw_plan_dft_1d (result is a 16384points dimension too). This signal has 128 first non-zero values and last 128 points non zero values. Between, all is close to 0 (10e-15). I want to undersa...
expected spectrum of aliased BW limited white noise
inI'm fairly new to DSP and am trying to see the effect of undersampling on bandwidth limited white noise in Simulink. I took the bandwidth...
I'm fairly new to DSP and am trying to see the effect of undersampling on bandwidth limited white noise in Simulink. I took the bandwidth limited white noise source (set the BW to 1kHz), put it through a zero order hold with Sampling rate set to initally 5kHz and the output of this is connected to the FFT spectrum scope block (I buffer 2048 points and take a FFT of the same length). When I...
Re: Undersampling of a clean carrier
in"Paul Solomon" wrote in message news:431e07ae$1@dnews.tpgi.com.au... > > "Thomas Magma" wrote in message > ...
"Paul Solomon" wrote in message news:431e07ae$1@dnews.tpgi.com.au... > > "Thomas Magma" wrote in message > news:dXiTe.402841$5V4.32336@pd7tw3no... > > > > "Paul Solomon" wrote in message > > news:4316590d@dnews.tpgi.com.au... > > > Hi, > > > > > > I have just been doing some test and I noticed a concerning problem that