ABSTRACT
Nearly all modern speech-based computer and communication systems transmit, route or store speech digitally. One obvious advantage of digital techniques over analogue is the ability to provide superior audio quality (e.g. compact discs versus phonograph records, or digital cellular telephones versus analogue). Other advantages include the ability to send many more simultaneous transmissions over a single communications channel, route speech communication through computer-based switching systems and store speech on computer disks and in solidstate memory devices. This paper describes techniques that reduce the amount of data required to digitize speech.
