DFasma

DFasma is an open-source, cross-platform software utility that can help you compare audio files through various means, primarily by analyzing waveforms and spectra. Moreover, it enables you to listen to fragments and discover differences audibly.

The application even allows you to modify the alignment and amplitude of the imported files, but it is not designed to function as a full-fledged audio editor.

DFasma supports a number of popular audio formats, relying on the Libsndfile library to open and process these files. There are notable exceptions, such as the MP3 format, but there are still quite a few options at your disposal.

Once you have added two or more audio files, the application generates a set of graphical representations in order to help you compare them visually. It can display the spectrogram, amplitude spectrum, phase spectrum and group delay.

In addition to helping you analyze audio files, DFasma also allows you make some small modifications. For instance, while in Edit mode, you can move the waveform to the left or right by simply holding down Ctrl, and you can increase or decrease its gain by moving the cursor up or down.

Using the Ctrl + F combination, you can estimate a file’s fundamental frequency, and you can then perform a re-estimation at any time, either for the whole file or a certain selection.

It goes without saying that DFasma is intended to be used by those who have at least some experience with these operations. Documentation is included, but it is not particularly extensive, so novices may find the app to be somewhat confusing.

On the whole, DFasma is a powerful open-source program that allows you to analyze audio files using multiple methods. It offers an impressive set of features, and it even has basic editing capabilities.