In its most generic sense a voice portal can be defined as "speech enabled
access to Web based information". In other words, a voice portal provides
telephone users with a natural language interface to access and retrieve Web content.
An Internet browser can provide Web access from a computer but not from a telephone.
A voice portal is a way to do that.
The voice portal market is exploding
with enormous opportunities for service providers to grow business and revenues.
Voice based internet access uses rapidly advancing speech recognition technology
to give users any time, anywhere communication and access-the Human Voice- over
an office, wireless, or home phone. Here we would describe the various technology
factors that are making voice portal the next big opportunity on the web, as well
as the various approaches service providers and developers of voice portal solutions
can follow to maximize this exciting new market opportunity.
speech is modality used when communicating with other people. This makes it easier
for a user to learn the operation of voice-activate services. As an output modality,
speech has several advantages. First, auditory input does not interfere with visual
tasks, such as driving a car. Second, it allows for easy incorporation of sound-based
media, such as radio broadcasts, music, and voice-mail messages. Third, advances
in TTS (Text To Speech) technology mean text information can be transferred easily
to the user. Natural speech also has an advantage as an input modality, allowing
for hands-free and eyes-free use. With proper design, voice commands can be created
that are easy for a user to remember .These commands do not have to compete for
screen space. In addition unlike keyboard-based macros (e.g., ctrl-F7), voice
commands can be inherently mnemonic ("call United Airlines"), obviating
the necessity for hint cards. Speech can be used to create an interface that is
easy to use and requires a minimum of user attention.
a voice portal to function, one of the most important technology we have to include
is a good VUI (Voice User Interface).There has been a great deal of development
in the field of interaction between human voice and the system. And there are
many other fields they have started to get implemented. Like insurance has turned
to interactive voice response (IVR) systems to provide telephonic customer self-service,
reduce the load on call-center staff, and cut overall service costs. The promise
is certainly there, but how well these systems perform-and, ultimately, whether
customers leave the system satisfied or frustrated-depends in large part on the
Many IVR applications use Touch-Tone interfaces-known as DTMF
(dual-tone multi-frequency)-in which customers are limited to making selections
from a menu. As transactions become more complex, the effectiveness of DTMF systems
In fact, IVR and speech recognition
consultancy Enterprise Integration Group (EIG) reports that customer utilization
rates of available DTMF systems in financial services, where transactions are
primarily numeric, are as high as 90 percent; in contrast, customers' use of insurers'
DTMF systems is less than 40 percent.
Enter some more acronyms. Automated
speech recognition (ASR) is the engine that drives today's voice user interface
(VUI) systems. These let customers break the 'menu barrier' and perform more complex
transactions over the phone. "In many cases the increase in self-service
when moving from DTMF to speech can be dramatic," said EIG president Rex
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