JTransforms | open source , multithreaded FFT | Video Utils library

by wendykierp Java Version: 3.1 License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(4)Vulnerabilities Install Support

kandi X-RAY | JTransforms Summary

JTransforms is a Java library typically used in Video, Video Utils, JavaFX applications. JTransforms has no bugs, it has no vulnerabilities, it has build file available and it has low support. However JTransforms has a Non-SPDX License. You can download it from GitHub, Maven.

JTransforms is available on maven central as.

Support

Quality

Security

License

Reuse

Support

JTransforms has a low active ecosystem.

It has 277 star(s) with 74 fork(s). There are 25 watchers for this library.

It had no major release in the last 12 months.

There are 8 open issues and 9 have been closed. On average issues are closed in 19 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of JTransforms is 3.1

Quality

JTransforms has 0 bugs and 0 code smells.

Security

JTransforms has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

JTransforms code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

JTransforms has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

JTransforms releases are not available. You will need to build from source code and install.

Deployable package is available in Maven.

Build file is available. You can build the component from source.

Installation instructions are not available. Examples and code snippets are available.

Top functions reviewed by kandi - BETA

kandi has reviewed JTransforms and discovered the below as its top functions. This is intended to give you an instant insight into JTransforms implemented functionality, and help decide if they suit your requirements.

Calculate www matrix
Convert WWW WW matrix to WWW
Calculate ww and ww
Calculate the www matrix
Saves the complex data in a file
Write the elements in a complex array
Writes a complex array in a file
Matrix inverse
Performs inverse inverse of the matrix
Performs the inverse of the matrix
Performs the inverse inverse of the matrix
Writes the complex array to a file
Saves a complex array in a 3D array
Computes the inverse DFT of the complex data
Computes the inverse of the complex data
Computes the inverse DHT of the matrix
Computes the inverse DHT of a float array
Fill bluesteinililin
Computes inverse of the matrix
Calculate bluestinine
Fill bluestinilililil
Bluestininine
Computes inverse DHT
Computes the inverse DHT
Computes the inverse of the matrix
Computes the inverse of a float array
Calculate cfftil
Cfftilization
Fill rfftil
Fill rfftil matrix

Get all kandi verified functions for this library.

JTransforms Key Features

No Key Features are available at this moment for JTransforms.

JTransforms Examples and Code Snippets

No Code Snippets are available at this moment for JTransforms.

Community Discussions

Trending Discussions on JTransforms

"Module not found, required by" when implementing maven library via gradle using javafx?

Turning Recorded Audio into numerical data

How to denormalize values to do the Harmonic Product Spectrum

FFT using JTransforms: is it radix 2?

QUESTION

"Module not found, required by" when implementing maven library via gradle using javafx?

Asked 2022-Feb-07 at 10:21

I am using gradle 7.3.1 in Intellij 2021.3 to build a JavaFX application. And I need external libraries dependency for the backend part.

This is the complete build.gradle script that is pre-built by the idea:

...

ANSWER

Answered 2022-Feb-07 at 10:21

Guided by @jewelsea in the comment, I have finally resolved this issue.

After several days, I figured out that my imported libraries in modular java project are treated as an unnamed module (correct me if I am wrong). As I understood so far, libraries like JTransforms may belong to traditional libraries that do not cover the modularity feature like in Java 9. This means that the jar library does not have Automatic-Module-Name at the very least in its manifest metadata. See the gradle documentation.

That is to say, I will have another approach using a grade plugin extra-java-module-info and found a somewhat similar case in this post.

Ultimately, I add the following script in build.gradle

Source https://stackoverflow.com/questions/70935160

QUESTION

Turning Recorded Audio into numerical data

Asked 2021-Jan-10 at 04:01

I am making a Java personal project where you can record yourself singing a song, and the program will load a song (from a preselected small selection) that best matches that melody. So far, I have implemented the ability for the user to record an audio file as a WAVE file using the Java Sound API. I have seen that for audio similarity, one can perform correlation between the audio files, and by measuring if there is a high magnitude peak in the correlation graph one can determine if the audio files are similar.

I read the following post in the Signal Processing stack exchange https://dsp.stackexchange.com/questions/736/how-do-i-implement-cross-correlation-to-prove-two-audio-files-are-similar which talks about using the Fast Fourier transform to accomplish convolution (correlation that works for time-delayed audio). I have imported the JTransforms project on Github to use FFT, but I am unsure how to turn the WAVE files into a numerical representation (something like a large array of values) that I can use to perform correlation or convolution. Any advice on how to go about this is much appreciated!

...

ANSWER

Answered 2021-Jan-10 at 04:01

To read a .wav, you will be using the class AudioInputStream. An example is provided in the tutorial "Using Files and Format Converters It's the first code example in the article, in the sections "Reading Sound Files".

The next hurdle is translating the bytes into meaningful PCM. In the code example above, there is a comment line that reads:

Source https://stackoverflow.com/questions/65649088

QUESTION

How to denormalize values to do the Harmonic Product Spectrum

Asked 2020-Apr-01 at 23:41

I'm trying to execute the HPS algorithm and the results are not right. (48000Hz, 16bits) I've applied to a buffer with the recorded frequency several splits, then a Hanning window, and finally the FFT.

I've obtained a peak in each FFT, that correspond with the frequency I am using, or an octave of it. But when i do the HPS, the results of the fundamental frequency are 0, because the numbers of the array where I make the sum(multiply) are too small, more than my peak in the original FFT. This is the code of the HPS:

...

ANSWER

Answered 2020-Apr-01 at 23:41

The problem was that I was trying to get a higher value of amplitude on the sum array (the HPS array), and my set of values are normalize since I apply the FFT algorithm to them. This is the solution I've created, multiplying the individual values of the sum array by 10 before make the multiply.

The number 10 is a coefficient that I have selected, but it could be wrong in some high frequencies cases, this coefficient could be another higher number.

'''

Source https://stackoverflow.com/questions/60947181

QUESTION

FFT using JTransforms: is it radix 2?

Asked 2020-Feb-07 at 19:33

I am using DoubleFFT_1D.realForward() from JTransforms in java to process a sample.

Does anyone know whether the length of the input double[] a to this method has to be a power of 2? Could not find the answer in the JTranforms documentation (might have missed it or perhaps I am not understanding correctly)

I tried with a sample having a random number of entries and it worked, but I'm just conscious whether it's doing it correctly or not and want to make sure that the method is indeed designed for any number of entries.

Thank you

...

ANSWER

Answered 2020-Feb-07 at 19:33

Looking at the test code of DoubleFFT_1D::realForward(), it will also accept input array of lengths other than power of 2:

Source https://stackoverflow.com/questions/60119712

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install JTransforms

You can download it from GitHub, Maven.
You can use JTransforms like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the JTransforms component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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