A method and apparatus for editing the displayed voice wave form by marking the portion of interest on the screen is disclosed. Marked segment may then be deleted, for example, or copied into another segment in second voice editing window. In either case, pointers are established at the selected marker...http://www.google.com.au/patents/US5367609?utm_source=gb-gplus-sharePatent US5367609 - Editing compressed and decompressed voice information simultaneously