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Disclosed is a method for enhancing speech user interfaces by providing an event notification from a speech recognizer to a client that the output of the recognizer will be longer than a criterion time (in other words, delayed).
English (United States)
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Notification of Delayed Response from a Speech Recognition System
In a Speech User Interface, the normal flow is that a prompt/question is output to the
user, the user speaks a response, the end-point of that response is detected, the
speech recognition system processes the input, and a result event (whether a match or
no-match) is triggered within the application flow. The step to "process the input"
corresponds to the delay that the user will have to endure before their utterance causes
them to be able to move to the next state of the user interface. The typical usability
guideline for this delay is to be a maximum of 2 seconds, but it is feasible that more
complex speech systems (such as ones that may do extra post-processing analysis for
disambiguation or to improve recognition accuracy) could take longer. It would be
useful for the speech recognition system to be able to send an event notification back to
the client to signal that the response is being delayed, which would give the application
flow processing the chance to inform the user of the delay ("Processing your request.
Please wait..."), rather than having them waiting in silence for the response. Currently,
solving this would require pre-determining the areas of the application that might cause
a delay and inserting a "Please Wait" by default, or waiting for a certain amount of time
for the response and telling the user "Please wait" at that time, after already leaving the
user to wait in silence fo...