Find the Equalization effect and switch from Draw Curves to Graphic EQ.A low pass filter helps if your audio is too high-pitched, while a high pass filter comes in handy if the audio sounds too low or too muffled. They are located in the bottom half of the Effects menu. Depending on your current sound pitch inside of the file, you might need to use a low pass or a high pass filter.The main thing you should do is change up the ratio, but you can also change up the noise floor and threshold if necessary. Find the compressor in the Effects menu.If turning up noise reduction decreases the volume, go to the effects menu and choose Amplify to increase the volume.Increasing the Noise reduction slider should greatly improve audio quality.Open the Effect menu at the top of the screen.If you want to edit the whole file, press Ctrl+A on Windows or Command+A on Mac.

You can do this by clicking on one end of the segment and dragging the mouse until you reach the other. Select the segment of the audio file you’d like to edit.Click on the file you want to edit, then click Open.At the bottom of the window, change Files of type to All supported types. After downloading and starting Audacity, follow these steps:

Audacity noise reduction