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Help understand MFCC extraction in SPTK toolkit

The algorithm for MFCC extraction is: Compute the Fourier transform of (a windowed excerpt of) a signal. Map the powers of the spectrum obtained above onto the mel scale, using triangular overlapping ...
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2answers
45 views

Time domain to frequency domain conversion of audio signals to extract 1/3 octave frequencies

I am writing first time in this forum and I am not expert in programming and FFT. We have developed an android app (Noise Tracker) for noise measurement using smartphones. It displays noise levels in ...
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18 views

Basis pursuit denoising for complex valued data

Basis pursuit denoising is given in the form $$\min_{x}{\frac {1}{2}}\|y-Ax\|_{2}^{2}+\lambda \|x\|_{1}$$ It is repeated in literature that when $y$, $A$, and (possibly) $x$ are complex valued, the ...
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0answers
19 views

How to write the program to compare two audio files

I want to make the program which would take one file and check the similarity with other. It would be music/melody file, and the program would ignore small deviations between two of them similarly to ...
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0answers
23 views

modelling radar system for image generation

I am trying to find or derive some model for radar using python and blender which should hopefully create a simulation of what a radar image of the blender environment would look like. I have been ...
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0answers
17 views

Partitioning data for minima detection

I am working with signals that consist of consecutive equidistant dips. I am trying to write an algorithm that finds the absolute lowest (minimum) point in each of the dips. We don't know the ...
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1answer
70 views

How do I differentiate between signals from an unknown program?

I believe this question is on topic for this site under Algorithm debugging questions, but if not, I would appreciate a suggestion about where to post this question....
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5answers
17k views

Good Language for Implementing Computer Vision System / Algorithm / Application?

I am trying to implement a content based image retrieval system but before I do so I would like to get an overview of some programming languages suitable for this task (having good libs and such). ...