Through editing tools, you can join audio files, split audio files mix audio samples, insert sound samples to audio, etc. Using these software, you can also edit audio files as they offer multiple audio editing tools.

However, they let you either gain or reduce the audio frequency after a specified threshold frequency. In some of these software, you also get High Shelf and Low Shelf filters which allow all the audio frequencies to pass. Similarly, there are other audio filters that you can use. The bandpass filter only allows those frequencies to pass that fall between user-defined upper and lower threshold frequency values. The high pass filter filters out all frequencies that fall below the threshold frequency value. Using the low pass filter, you can remove all frequencies greater than the threshold frequency.

To do that, these software offer multiple audio filters like Low Pass Filter, High Pass Filter, Band Pass Filter, etc. Through these software, you can filter out multiple frequencies from an audio file. Here is a list of best free audio filter software for Windows.