Signal Processing Stack Exchange
Signal Processing Stack Exchange

Questions tagged [soft-question]

questions that are soft in nature, generally not related to implementation

Refers to questions that do not cite references and also do not need highly bibliographic answers; should be expected neither to contain code-snippets nor to be written in the answers.

48 questions
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14 answers

What Resources Are Recommended for an Introduction to Signal Processing (DSP)?

What are some recommended resources (books, tutorials, lectures, etc.) on digital signal processing, and how to begin working with it on a technical level?
Dulan
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18
votes
2 answers

A (Clear) Line Between Computer Vision and Image Processing

I have been working in and learning about both Computer vision and Image processing for a few years now, and I believe that I am not a complete beginner any more. Still, after all these years, it is hard for me to tell for any particular part of my…
penelope
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12
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3 answers

Does a simple photograph contain more information than a complex painting?

I hope this question is appropriate for this site. I came across this passage in The Three Body Problem, a novel by Liu Cixin: The professor had put up two pictures: One was the famous Song Dynasty painting Along the River During the Qingming…
RSS
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11
votes
5 answers

Introduction to Statistical Signal Processing

There is a postdoc in my lab whose specialty is "statistical signal processing". He has a PhD in Electrical Engineering and he analyzes the neural data collected. I am wondering what courses/topics I should start studying to follow in his footsteps.…
Diego
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8
votes
3 answers

Are there any open source biomedical signal processing projects?

I'm in a biomedical engineering master's program and am mostly interested in signal processing. Unfortunately, I feel that I'd like to get deeper into the subject, and my university can't accommodate that request -- there's a limited number of…
Andreas
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7
votes
3 answers

Test data vs. training data

I am reading bishop book on pattern recognition and machine learning. Going through the introduction section, I am not sure if I get the differences between the two widely used term "test data" and "training data". Is training data the data you will…
Gigili
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6
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3 answers

What are your tips for DSP self-study?

Perhaps a meta-question, but I'll post it here because some of you are bound to possess gold nuggets about continuing education. It might be closed for being subjective but I don't care because this community is small and this could be valuable info…
panthyon
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6
votes
4 answers

What are the minimum knowledge required to begin the study of Digital Signal Processing?

I am a student of computer science (not the university but technical school). I am interested in the world of DSP, and I saw that it is closely connected with mathematics. I noticed for example that a lot is based upon the Fourier I'm slowly trying…
user8770
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5
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1 answer

Representation of frame image pixels

In paper Human identification using gaits Section 3.2, the authors explain how to represent a 3D image (x,y,t) into 2D image with (x,t) ; (y,t) denoted 1D signals. I have a conceptual doubt which is in my case I have a matrix (x,y) represent the…
user1214586
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5
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1 answer

I and Q Channels

My understanding of I and Q channels is as follows (please correct me if I am wrong): I = In-phase, or real component Q = Quadrature (90° shift of real component) Where do these two channels come from in the first place? Is one the electric field…
Biff
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4
votes
3 answers

From Mathematics to DSP

I'm currently working on multiple mini pet-projects in my spare time, grounding myself in the basics of audio signal processing, and trying to develop algorithms for polyphonic pitch detection. As I'm having a lot of joy (even in the failure) in…
Andrew Whelan
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3
votes
1 answer

Are there characteristics of photographic film that would make it an analog medium?

There was an article a few years ago entitled "Analog is Not the Opposite of Digital". Film is not analog, period. I used to shoot film on a Canon AE-1 from the ’70s. Now I have a digital SLR from Canon, and they’re obviously extremely different.…
jonsca
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3
votes
2 answers

What do you call the random Gaussian vectors in compressed sensing?

Let $(e_i)_{1\leq i\leq M}$ be vectors with zero-mean i.i.d. entries from a Gaussian distribution. In a compressed-sensing setup, I have observed the collection of scalar products $(\langle x\, |\, e_i\rangle)_{1\leq i\leq M}$ for an unknown vector…
Zim
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3
votes
3 answers

Why do mobile phone calls produce a vibration when they are near a speaker?

I remember that years ago when I had a classic mobile phone (the small one without touchscreen) when I was about to receive a call from someone and my phone was near a speaker, the speaker would start to vibrate quite hard before 2-3 seconds of…
user41664
3
votes
1 answer

How to remove color cast from HSV information

I have hue, saturation and value of a color (HSV color-space). The color has to be set on a device that displays them incorrectly. If I specify white it displays light magenta. However, if you specify some green it displays the best white it can…
human-man
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