mp3asm is a software tool for editing MPEG audio files on a frame level. It supports mpeg 1/2/2.5 audio layer 1/2/3 with both constant and variable bit rates.
Filtering only once from the original full-range unfiltered audio will provide the best result without wasting precious cycles on a lengthy process. Users can edit mp3 files down to just 40ms, without sacrificing much quality. In fact, further filtering will result in more data loss as encoders differ only in their filterbanks.
With mp3asm, users can salvage a rip that may have otherwise gone to waste due to bad starting frames or a long lead out. It may even be possible to provide for fading in/out, although this is still under development.
While it is unclear why the developer, Olli Fromme, halted development back in '97, mp3asm is still an unbelievable idea that was executed well. The latest release fixed parsing sideinfo for mpeg 1 layer 3 mono, found by Alain Daurat.
Version 0.1.3: N/A