Convert aac to sxw

What is the difference between .aac and .sxw?

Developer: Bell Labs, Fraunhofer Institute, Dolby Labs, Sony and Nokia; Oracle

Description: Compressed audio file similar to an .MP3 file, but offers several performance improvements; examples include a higher coding efficiency for both stationary and transient signals, a simpler filterbank, and better handling of frequencies above 16 kHz; maintains quality nearly indistinguishable from the original audio source.; The SXW file format is associated with StarOffice Writer, a word processing application that was part of the StarOffice suite developed by Sun Microsystems. The SXW file type was primarily used to save text documents that could include formatted text, images, tables, and other document elements. StarOffice served as a precursor to the more widely known OpenOffice.org suite, which later evolved into Apache OpenOffice and LibreOffice, among others.