Audacity is a powerful and popular open-source audio editing software that offers various features, including noise removal. Here’s a step-by-step guide on how to remove noise from audio using Audacity:
- Download and install Audacity: Visit the official Audacity website (https://www.audacityteam.org/) and download the software for your operating system. Follow the installation instructions to set it up on your computer.
- Import your audio file: Launch Audacity and go to “File” > “Open” to import the audio file you want to clean up. Alternatively, you can drag and drop the audio file directly into the Audacity workspace.
- Select a sample of the noise: In order for Audacity to identify and remove the noise accurately, you need to select a portion of the audio that contains only the noise. Locate a section in the audio where there is no intended sound, but only the noise you want to remove. Ideally, this should be a few seconds long.
- Capture the noise profile: With the noise-only section selected, go to “Effects” > “Noise Reduction.” Click on the “Get Noise Profile” button in the Noise Reduction window. This step tells Audacity what kind of noise to look for and remove from the audio.
- Apply noise reduction: Now, select the entire audio file or the portion you want to clean up. Go back to “Effects” > “Noise Reduction.” Adjust the settings in the Noise Reduction window based on your audio and preferences. The default values often work well, but you may need to experiment to find the best settings for your specific audio file. Click on “OK” to apply the noise reduction.
- Preview and adjust as needed: Once the noise reduction is applied, play back the audio to listen to the result. If you notice any artifacts or unwanted changes to the audio, you can undo the noise reduction (Ctrl+Z) and modify the settings in the Noise Reduction window to achieve a better outcome. Repeat this process until you are satisfied with the audio quality.
- Export the cleaned audio: When you are happy with the noise reduction, go to “File” > “Export” to save the cleaned audio as a new file. Choose the desired file format and specify the destination folder. Give your file a name and click on “Save.”
That’s it! You have successfully removed noise from your audio using Audacity. Remember to experiment with different settings and make adjustments as necessary to achieve the best results for your specific audio file.