dsp

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I am designing a notch filter that removes unwanted frequencies at 60, 120 and 180 Hz for a VoIP call sampled at 180000 kHz. Here is my filter implemented in Scilab. clc; clear; close; fs = 16000; F = [60, 120, 180]; BW = 3; Nsec = length(F); bmat = zeros(Nsec,3); amat = zeros(Nsec,3)...

In an community project, I was assigned to design an FIR filter that eliminate the 60 Hz hum and its harmonics present in a voice signal, without perceptibly degrading the quality or intelligibility of the conversation, while meeting the real-time constraints (latency and computational cost)...

Hi everyone, I am not sure if the post should be here or in DSP. So, I try first here. I want to understand using the K-path sampling according to the book of MSD of Jacob Baker, but I am struggling to get the concept. Question 1: the equation numbered 1 seems strange for me as I would write ...

Hello everyone, I have issue understanding two conclusion made byDr. Baker in his mixed signal books as shown in page 35 and 36. 1- how can using the convulution yield from euation 2.8 to 2.9 . I applied the convultion to it and I get double summation and not as in equation 2.9! 2-the equation...

Hi Guys, I am quite confused why he compares the incertitude of momentum and position of particle in quantum mechanics to frequency and amplitude in signal and system: for my understanding when I sample a signal over many cycles, i do obtain the amplitude and frequency of the signal. so, why he...

Hello everyone, We've been working on a machine learning project for pattern recognition, using time-domain features such as kurtosis, mean, standard deviation, variance, skewness, and peak-to-peak values. Background: Initially, we trained our data after applying a high-pass filter at 1 kHz...

If I sample a thermocouple at a slow rate such as 1 Hz, do I need Low Pass Filters? I'm not aware of any noise sources that are that low in frequency, and since I'm sampling so slowly, does this by default eliminate noise contributions in the high frequency ranges?

I need help regarding the I & Q data which I extracted from VPI simulation software. The data is for 16 QAM constellation which is distorted by chromatic dispersion. The data is in 2 columns and have 512 rows. I loaded my Tx and distorted Rx data extracted from VPI simulation software in to LMS...

Hi, My project diagram is similar to this idea, Lets say input is 3p 380VAC, 60Hz, Main Transformer MTR runs at 20kHz, DC output should be 50-147 v, charging current 100A. Should have CC and CV mode of operation. I need to implement FW with following facilities, 1. Shunt/ Temperature...

Hello! I am not sure if this is the right place to ask, but I am stuck already a couple of days. I have implemented a soft Hamming decoder (LLRs) in MATLAB and now I have to create a soft-output for this decoder. My attempts all failed, since the soft-outputs do not match the hard-bits. The...

Hi! I've been working on a school project, that is a guitar pedal (effects) using an arduino board. I've been using the EasyEDA site for designing the schematic. I would like to ask a more skilled/experienced person to go over my design and look for any flaws or mistakes. Any tips about it...

I have the overview of signal with cut-off frequency fc that I want to sample using an ADC with sampling frequency of fs, I have seen that some of my colleagues wanted to dumb any noise at -60dB at frequency fs-fc as you see it in the picture. for my understanding of nyquist theorem, I need to...

I know that the group delay of filter made in chain is proportionnal to the total group delay. I want to know the relationship between the group delay of fitler of order 2 and 3 ?

I have already studied DSP in my Master degree. However, As I am starting a job where a good percentage of my work is to design DIGITAL FILTERs, I still feel like I don't know that much on DSP and I really need to become a good engineer in this topic and take it to another level rather than...