FFT Spectra is a tool for the visualization of
frequency spectra of an audio signal. Among other
things, it can be used to verify whether you are
able to sing and whistle in tune or to tune your
guitar.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.
