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WIP: new dsp chapter
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Ravenwater committed May 29, 2023
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3 changes: 2 additions & 1 deletion content/contentdev/_index.md
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weight = 8
archetype = "chapter"
weight = 7
title = "Content Development"
date = "2017-02-15T06:49:44-05:00"

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13 changes: 13 additions & 0 deletions content/dsp/_index.md
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weight = 7
archetype = "chapter"
title = "Digital Signal Processing"
date = "2023-05-29T16:50:01-05:00"

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Digital Signal Processing is the discrete realization of Analog Signal Processing
operations used to condition, amplify, characterize, and transform.
Digital Signal Processing is essential when interfacing a digital computer
to a physical process to enable reproducible and high-fidelity applications.
14 changes: 14 additions & 0 deletions content/dsp/conditioning.md
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weight = 2
title = "Signal Conditioning"
date = "2023-05-29T16:55:11-00:00"
toc = true

tags = [ "dsp", "algorithm", "signal-conditioning" ]
categories = [ "dsp", "conditioning" ]
series = [ "Digital Signal Processing" ]

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Signal conditioning is the act of making signals more robust for further processing.

14 changes: 14 additions & 0 deletions content/dsp/filters.md
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weight = 3
title = "Digital Filters"
date = "2023-05-29T16:57:39-00:00"
toc = true

tags = [ "dsp", "algorithm", "filtering" ]
categories = [ "dsp", "filtering" ]
series = [ "Digital Signal Processing" ]

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Digital Filtering is the act of focusing a signal to key features for observation.

34 changes: 34 additions & 0 deletions content/dsp/indentification.md
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weight = 4
title = "Identification"
date = "2023-05-29T16:58:21-00:00"
toc = true

tags = [ "dsp", "algorithm", "identification" ]
categories = [ "dsp", "identification" ]
series = [ "Digital Signal Processing" ]

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Identification is the act of recognizing the signal in the presence of noise.

When there are signals and noises, physicists try to identify signals by modeling them,
whereas statisticians oppositely try to model noise to identify signals. In this study,
we applied the statisticians' concept of signal detection of physics data with small-size
samples and high dimensions without modeling the signals. Most of the data in nature,
whether noises or signals, are assumed to be generated by dynamical systems; thus, there
is essentially no distinction between these generating processes. We propose that the
correlation length of a dynamical system and the number of samples are crucial for the
practical definition of noise variables among the signal variables generated by such
a system. Since variables with short-term correlations reach normal distributions
faster as the number of samples decreases, they are regarded to be ``noise-like''
variables, whereas variables with opposite properties are ``signal-like'' variables.
Normality tests are not effective for data of small-size samples with high dimensions.
Therefore, we modeled noises on the basis of the property of a noise variable, that is,
the uniformity of the histogram of the probability that a variable is a noise.
We devised a method of detecting signal variables from the structural change of the
histogram according to the decrease in the number of samples. We applied our method
to the data generated by globally coupled map, which can produce time series data with
different correlation lengths, and also applied to gene expression data, which are
typical static data of small-size samples with high dimensions, and we successfully
detected signal variables from them.
14 changes: 14 additions & 0 deletions content/dsp/spectral.md
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weight = 5
title = "Spectral Analysis"
date = "2023-05-29T17:04:34-00:00"
toc = true

tags = [ "dsp", "algorithm", "spectral-analysis" ]
categories = [ "dsp", "analyzing" ]
series = [ "Digital Signal Processing" ]

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Spectral Analysis analyses the frequency components of a signal.

14 changes: 14 additions & 0 deletions content/dsp/transforms.md
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weight = 6
title = "Transforms"
date = "2023-05-29T17:05:17-00:00"
toc = true

tags = [ "dsp", "algorithm", "transforms" ]
categories = [ "dsp", "transforming" ]
series = [ "Digital Signal Processing" ]

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Signal Transforms map the signal function to other functions for further analysis.

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