Forums Update, Tips and Tricks - Please Read!

Started by stephaneb 10 months ago4 replieslatest reply 8 months ago419 views
It's been a few months since the launch of the new forums.  Here are a few thoughts. The thumbsup and beer buttons    If there is one thing that could have a...

Advice on digital phase locked loop with square wave input wanted

Started by johnpote 1 day ago2 replieslatest reply 35 minutes ago39 views
I have the interesting project of desigining and implementing a digital phase locked loop in a micro-controller. The input is a square wave for which the absolute...
HiI have a question concerning getting a virtual audio cable output in a program I wrote.  A virtual audio cable output is an audio stream where the left channel...

Visualizing the spectrum of a 433 MHz433 MHz signal in MATLAB

Started by NatiyaITD 4 days ago4 replieslatest reply 6 hours ago64 views
I recorded a 433 MHz IQ signal with a SDR dongle as a .wav file and when I read it in MATLAB, I see the following:This is the code:[y,Fs] = audioread('HDSDR_SHORT_433920kHz_RF.wav',[5000000...

Burg's Recursion anomalies

Started by DBH 1 day ago4 replieslatest reply 12 hours ago49 views
I am using Burg's method of linear prediction to replace invalid sections of audio data. The method works fairly successfully 95% of the time but occasionally fails...

Design methodology for circuit/pcb design.

Started by casperPro 4 days ago1 replylatest reply 4 days ago91 views
Hi all,            I have done a few embedded projects from the ideas stage, through schematic design/parts selection to pcb manufacture/debugging to the final...

OFDM

Started by yashasri 6 days ago6 replieslatest reply 5 days ago78 views
i don't know what's wrong with this ofdm code, it gets executed but i don't get any graph. % OFDM_basic.m clear all; clf; Target_neb=500; PowerdB=[0 -8 -17 -21...

Practical Maximum Bandwidth in Digital Signal Processing

Started by johnnmonroe 4 weeks ago6 replieslatest reply 5 days ago101 views
In the analog days, without the luxury of an FFT to create a spectrogram from say 1-Hz-wide bands from 20 Hz to 1000 Hz, we would use banks of analog filters to...

Correct transfer function with 1st order IIR filter

Started by jtp_1960 6 days ago2 replieslatest reply 6 days ago67 views
What diffreneces it makes in magnitude and/or phase response when using H(z) = (b0 + b1*z^-1 + b2*z^-2)/(a0 + a1*z^-1 + a2*z^-2) by adding b2=0, a2=0 instead...

Is there a fast algorithm about this type of FFT

Started by zhaojinrong 1 week ago6 replieslatest reply 6 days ago88 views
Hi all , my problem is:A real sequence A,the length is  'N', 'N' is multiple of 32, the pattern is as below: A : {a(0), a(1), a(2) ..., a(N/2-1), b(0), b(1), b(2),...

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