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Audio Noise Limiter

An Audio Noise Limiter is a type of audio processing tool used to reduce unwanted noise or background noise in audio recordings. It works by analyzing the audio signal and detecting any noise that exceeds a certain threshold level. Once the noise is detected, the limiter will reduce the gain of the audio signal to prevent the noise from becoming too loud.

Here’s a general overview of how an Audio Noise Limiter works:

  1. Threshold: The user sets a threshold level for the noise, which is the level at which the limiter will start to reduce the gain of the audio signal.
  2. Detection: The audio noise limiter analyzes the audio signal and detects any noise that exceeds the threshold level.
  3. Reduction: Once the noise is detected, the limiter will reduce the gain of the audio signal to prevent the noise from becoming too loud.
  4. Release: The limiter has a release time, which is the time it takes for the gain to return to normal after the noise has stopped.
  5. Knee: The knee is the transition point between the noise reduction and the normal audio signal.
  6. Lookahead: Some limiters have a lookahead function, which allows them to anticipate and prevent clipping before it happens.

There are many audio noise limiters available in the market, they can be software-based or hardware-based, and they can be integrated into a digital audio workstation (DAW) or used as a standalone application. The specific features and functionality of an audio noise limiter will depend on the specific tool and the requirements of the user. It’s important to note that while an audio noise limiter can be useful in reducing background noise, it can also affect the audio quality, so it’s important to use it carefully and adjust the settings to suit the audio.


There are several software-based audio noise limiters available, here are a few examples:

  1. Audacity: Audacity is a free, open-source audio editing software that includes a noise reduction tool. It allows users to select a portion of the audio with noise, and then uses that selection to create a noise profile, which can then be used to reduce the noise in the entire audio file.
  2. Izotope RX: Izotope RX is a professional audio editing software that includes a noise reduction tool. It offers a wide range of advanced features such as spectral editing, which allows users to precisely target and reduce specific types of noise.
  3. Adobe Audition: Adobe Audition is a professional audio editing software that includes a noise reduction tool. It offers a wide range of advanced features and is widely used in the audio production industry.
  4. WavePad: WavePad is a free, audio editing software that includes a noise reduction tool. It offers a wide range of features and is easy to use, making it a great option for beginners.
  5. Ocenaudio: Ocenaudio is a free, cross-platform audio editing software that includes a noise reduction tool. It is easy to use and offers a wide range of features, making it a great option for both beginners and advanced users.

These are just a few examples of software-based audio noise limiters, there are many more options available in the market, both free and paid, with different functionalities, and they can be integrated into a digital audio workstation (DAW) or used as a standalone application. It’s important to note that the quality of the noise reduction can vary depending on the specific tool, the audio quality, and the settings used, so it’s important to test and evaluate different options before making a decision.


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