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Ambient Noise Remover

Ambient Noise Remover is a Java program that removes ambient noise from an audio file. It uses the multidimensional Kalman Filter to estimate the positions of the ambient noise in an inputted audio file and the Java Sound API to remove it from the sound file. It then outputs a new file with removed ambient noise.

Motivation

Communication applications, such as Telegram, Signal, Discord, and Skype, automatically remove background noise during video and voice calls as part of their software, before the sound reaches the recipient. In my project, I wanted to do what they were doing, just in an audio file rather than incoming sound.

Understanding of the Kalman Filter

Before writing code for or reading code in this repository, you need to understand how the one dimensional and multidimensional Kalman Filter works. I suggest the following resources:

• Background Info: https://www.kalmanfilter.net/background.html
• One Dimensional Kalman Filter: https://www.kalmanfilter.net/kalman1d.html

• Multi-Dimensional Kalman Filter:

  • https://www.kalmanfilter.net/kalmanmulti.html
  • https://www.vectornav.com/resources/kalman-filters

To see the program in action, find background heavy audio files and place them in data. Then edit the file path inside the main method of AmbientNoiseRemover.java

Deployment

Ambient-Noise-Remover is a console program runnable as a JAR file on Windows, Mac, and Linux. There is currently no web version, GUI, or mobile app that hosts, displays, or runs this project.

Built With

• Java - The language used
• Maven - Dependency Management System
• Java Sound API - The API for manipulating the sound

Contributing

Please read CONTRIBUTING.md for details on our code of conduct, and the process for submitting pull requests to me.

Versioning

I use SemVer for versioning. For the versions available, see the tags on this repository.

Author

I, Varun Singh, did the research and wrote the software.

Built With

• java