SALT stands for Speech Application Language Tags. It consists of small set of XML elements with associated attributes and DOM object properties, events and methods which apply a speech interface to web pages. SALT allows applications to be run on a wide variety of devices and also through different methods for inputting data.
The main design principle of SALT include reuse the existing standards for grammar, speech output and also separation of the speech interface from business logic and data etc. SALT is designed to run inside different Web execution environments. So SALT does not have any predefined execution model but it uses an event-wiring model.
It contains a set of tags for inputting the data as well as storing and manipulating that data. The main elements of a SALT document are , and . Using these elements we can specify grammar for inputting data , inspect the results of recognition and copy those results properly and provide the application needed.The architecture of SALT contains mainly 4 components