Signal Processing Questions, Problems & Solutions : TransWikia.com ~ Page 8

DFT exercise in the book Understanding digital signal processing 3 Ed

I am trying to solve exercises from the book Understanding digital signal processing 3 Ed - Richard Lyons.I will repeat the question as it is in...

Asked on 10/24/2021 by Henrique Luna

2 answer

Sparse Inverse Fourier Transforms

I'm looking to compute an IDFT but my input is very sparse: Example:IDFT length: 7,408,800 (complex floats)Sparsity: 96.61% to 99.99%I found this Sparse FFT website but...

Asked on 10/24/2021 by Tobi Akinyemi

1 answer

Save computational burden by calculating the output of decimate filter at output rate?

I read in a book that the output of a decimate filter can be calculated at output sampling rate. In this way the number of filtering operations can be greatly...

Asked on 10/24/2021

1 answer

Find signal power in a band by integrating the PSD in a frequency band (and zeroing the out-of-band DFT bins)

I know that directly zero DFT bins outside a frequency band has the side effect of introducing ringing, as this post says Why is it a bad idea to...

Asked on 10/24/2021 by ecook

1 answer

Speech recognition algorithm in GNU Octave to convert speech to text (and vice versa)

Recently, I am building an application in Octave and I saw some algorithms about speech recognition spread around the net, but most of them were implemented in Python, MATLAB, C++...

Asked on 10/24/2021

1 answer

Find camera pose by knowing triangle coordinates

I have this concrete problem where I know the 3 coordinates of a triangle $ABC$ in a $xyz$ frame reference and I need to estimate the position ...

Asked on 10/24/2021 by Duloren

1 answer

Comparing similarity of two simultaneously recorded EEGs in freq domain

I have two EEG signals that are simultaneously recorded during the night (sleep). Imagine one device recorded from channel F4 and the other from Fp2. Now I...

Asked on 10/24/2021 by TheJohn

2 answer

Convolution : Anechoic Speech signal and Impulse response

I am trying to perform convolution in MATLAB of an anechoic speech signal (2.1 s) and a impulse response (20 s) using the following code:[y_anech,fsSig]=audioread('MA03_03.wav'); %speech signal fsSig =...

Asked on 10/24/2021 by Tanmayee Pathre

1 answer

Are there any advantages oversampling?

Are there any advantages of undersampling or oversampling in signal processing point of view?...

Asked on 10/24/2021

2 answer

Calculation of gain at certain frequency in case of nth order IIR filter

There is this method for to set 0dB gain to be at wanted frequency (fc) (Octave/Matlab example for biquad LPF):% needed for Octave -------------------------pkg load signal % -------------------------------------------clf;% calculate...

Asked on 10/24/2021

1 answer

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