Difference between fft and pspectrum in Matlab

Started by mk2022 2 years ago3 replieslatest reply 2 years ago952 views
Hello!What is difference between using the fft() or pspectrum() command in Matlab on a time-series signal? My understanding is that the fft command computes the...

fft combinations

Started by kaz 8 years ago18 replieslatest reply 2 years ago844 views
Hi all,I got an FPGA design running #FFT at 256 points. Our system requires fft be configured as either 256 or 512 points on the run. I can use variable fft that...

Multiframe FFT using single larger FFT

Started by kgrze 2 years ago4 replieslatest reply 2 years ago219 views
Hello,I have an algorithm that slices wav file into blocks (frames) of size 64 and does 64 point FFT on them. Recently I was give a hardware acceleration library...

Setting required FFT spectrum bandwidth w.r.t the Sampling rate

Started by Nukul13 3 years ago4 replieslatest reply 3 years ago356 views
I am working on an accelerometer with sampling rate of 26.7 kHz on which I intend to calculate FFT. Hence the FMax =  (26.7/2.56 = 10.4kHz). As I am performing...

Overlap-add with window

Started by ctlee 5 years ago26 replieslatest reply 5 years ago1556 views
Hi all,Suppose I have an input signal \( x[n] \) of length \( N \), an FIR filter \( h[n] \) of length \( M \), and a window function \( w[n] \) of length \( N...

How to efficiently control an FIR's magnitude response by altering its phase spectrum

Started by lasse 6 years ago21 replieslatest reply 5 years ago297 views
Note: I posted this question on Signal Processing Stack Exchange yesterday. Because the one answer I got so far was not-so-satisfying, although surely well-intentioned,...

ARM CMSIS FFT - does it produce correct results?

Started by mjbcswitzerland 7 years ago15 replieslatest reply 6 years ago6750 views
Hi AllDoes anyone have experience with the #ARM CMSIS #FFT? Specifically the floating point implementation arm_cfft_f32()?Although testing the code using the ARM...

Downsampling from an FFT

Started by tomb18 7 years ago13 replieslatest reply 7 years ago2922 views
I would like to down sample a signal from it's original sampling rate of 2,000,000 samples per second to 48,000 (or 44100) starting from the output of an #FFT.  This...

3D fft Matlab

Started by a17D 8 years ago7 replieslatest reply 8 years ago1816 views
Hello everyone. I need some advice regarding 3D #FFT on #Matlab. My signal is represented as a 3D matrix (Let's say 10x10x10) I wanted to find the fft and then...

Window-presum FFT problem

Started by n2ic 8 years ago14 replieslatest reply 8 years ago404 views
First of all, let me warn you, I'm a neophyte on this. Did my EE degree 40 years ago, before FFT's were rediscovered.I am trying to reduce frequency bin "leakage"...

Please login (on the right) if you already have an account on this platform.

Otherwise, please use this form to register (free) an join one of the largest online community for Electrical/Embedded/DSP/FPGA/ML engineers: