Automatic voice recognition software normally reduces the manual transcription needs. But Automatic voice recognition technology is not still matured to produce accurate transcription for non-American accents, or with people speaking quickly or multiple speakers audio files. If you have more than one voice it is almost impossible to get a good transcript. Add to that any background noise or a weak recording and you can pretty much forget it.
So, after automatic transcription, you have to massage this transcription into the final form. Some of the massages are