Questions tagged [signal-processing]

For questions about processing data from sensors (e.g., audio and video data), and *not* handling operating system signals. Note that there is also a dedicated Signal Processing Stack Exchange, which may be a more appropriate venue.

16 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
3
votes
0answers
393 views

Algorithms that are similar to Dynamic TIme Warping

Dynamic time warping (DTW) is an algorithm in time series analysis for measuring similarity between two temporal sequences which may vary in time or speed. Here are some explanations of DTW: Dynamic ...
2
votes
0answers
61 views

Stream processor definition

I'm looking for an actual definition of a stream processing unit (SPU), preferably sourced. The context is not specifically graphics cards. I can find many, many articles explaining what they contain,...
1
vote
0answers
15 views

Does the illumination color (red/blue/green) has any effect over the disparity map generated from a stereo image?

I have a working model that creates a disparity map using stereoscopic image processing using opencv. I am thinking of improving the disparity map by using illumination and stuck with different ...
1
vote
0answers
82 views

Understanding Dynamic Frequency Warping (not Dynamic Time Warping)

I am implementing a paper which need Dynamic Frequency Warping as a component. They have written very briefly about this algorithm and cite to this paper: Voice transformation using PSOLA technique (...
1
vote
0answers
234 views

Generate higher dimensional pink noise

1D Pink noise, is easy enough to generate. See https://www.dsprelated.com/showarticle/908.php for example. What about higher-dimensional pink noise, such as 2D or 3D pink noise? Is there an algorithm ...
1
vote
0answers
109 views

Help understanding an audio processing algorithm

I'm reading “Speech segmentation without speech recognition” by Dong Wang, Lie Lu and Hong-Jiang Zhang. The algorithm I'm looking at is a V/C/P (Vowel/Consonant/Pause) classification algorithm on a ...
0
votes
0answers
23 views

Is there a good analogy between spectral representation of a signal and graph theory?

I am working on some time series problems where the Fourier representation of the signal in the frequency domain is also important. I am wondering if there is any connection between time series ...
0
votes
0answers
23 views

Detect a specific frequency in an input signal without using fourier transform

I am trying to learn FPGA programming, and I would like to analyze an audio input. I would like to know what kind of frequencies are present in the signal but without using Fourier transform - there ...
0
votes
0answers
12 views

How to set parameters in Librosa's CQT function for an 88-key piano?

I am doing an automatic music recognition project with a deep learning model. For my data preprocessing, I am trying to calculate the Constant Q Transform for Polyphonic 88-key piano audio using ...
0
votes
1answer
28 views

Signal translation with Seq2Seq model

I'm currently doing some research on signal processing and I got a dataset which includes the signal in itself and its "translation". So I want to use a Many-to-Many RNN to translate the ...
0
votes
0answers
25 views

What is the optimal combination of transducers with limited capabilities to a more powerful transducer?

Assume we have a number of transducers with limited information processing capabilities. Are there theoretical results (proofs) on how these transducers can be combined by some sort of communication ...
0
votes
0answers
153 views

spike/peak removal/interpolation

I have some signals that look like following: I would like to remove the two peaks by doing linear interpolation, so I can get something like this: where the orange line segment should replace the ...
0
votes
0answers
124 views

How much data can be send in 1 minute of audio with Smartphone speakers / microphones?

Having the current news about Google Assistant in mind, I thought that robots might use interfaces designed for humans to send data. Like a telephone interface. Then I wondered: What is the maximum ...
0
votes
0answers
161 views

RNN learning an iterative algorithm

How do I solve the following problem with a recurrent neural network (RNN)? What architecture should I use for the (conv)-RNN? Let $s \in \mathbb{R}^N$ be a musical signal. We corrupt it with ...
0
votes
0answers
79 views

Entropy of residuals and noise

Relation of Entropy and SNR : Based on this question and answer, I had another question that struck me and I am curious to know, if somebody can shed some light, on the following situation: $y= ...