Digital Speech Standard (DSS) is a proprietary compressed digital audio file format defined by the International Voice Association, a co-operative venture by Olympus, Philips and Grundig. DSS was originally developed in 1994 by Grundig with the University of Nuremberg. In 1997, the digital speech standard was released, which was based on the previous codec. It is commonly used on digital dictation recorders. Modern phycoacoustical codecs that perform nearly as well at only slightly higher bitrates have led to this speech coding standard being less used in modern voice recording equipment.

Is a standard for storing audio files in Apple operating systems. It was developed in 1988 based on the IFF format and is a lossless format – audio data is stored in an uncompressed form. In essence, AIFF is an analog to WAV for the Apple Macintosh platform.