Is it possible to define speech grammars?
For most HAWHAW input elements (links, linksets, select elements, radio buttons and checkboxes) it is not necessary to define special speech grammars, as the voice browser either can use simple built-in grammars or can compare voice input with a given text. The situation is different when you want to use a HAW_form element, e.g. for some application’s user login. Let’s assume you want to grant access for users Alice, Bob and Carol only. On a visual browser, people can enter their name and their individual password. User input is transmitted from the browser towards the webserver and the application compares the received user parameter with the strings “Alice”, “Bob” and “Carol”. But how should this work in case of speech recognition? Alice is asked for her username and says “Alice”. But how should a voice recognition system know, whether Alice said “Alice” or “Ellis”? It can’t, as long as it has no additional information about valid voice input.
For most HAWHAW input elements (links, linksets, select elements, radio buttons and checkboxes) it is not necessary to define special speech grammars, as the voice browser either can use simple built-in grammars or can compare voice input with a given text. The situation is different when you want to use a HAW_form element, e.g. for some application’s user login. Let’s assume you want to grant access for users Alice, Bob and Carol only. On a visual browser, people can enter their name and their individual password. User input is transmitted from the browser towards the webserver and the application compares the received user parameter with the strings “Alice”, “Bob” and “Carol”. But how should this work in case of speech recognition? Alice is asked for her username and says “Alice”. But how should a voice recognition system know, whether Alice said “Alice” or “Ellis”? It can’t, as long as it has no additional information about valid voice input. Therefore it is possible to define custo
