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Automatic Speech Recognition (ASR) is a system that users can
converse with, as if they are conversing with another human being.
The ASR system is used to listen, recognize and understand what the user
is trying to speak and then respond in a natural-sounding synthetic voice using
an unrestricted vocabulary Text-to-Speech (TTS) synthesis system or a restricted
vocabulary pre-recorded human voice prompts.
The ASR system understands the intention of the user based on the key
word or the particular sequence of key words spotted in the fluent speech of the
user, and initiates appropriate action.
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Better Caller Experience:
Provides hands-free and hassle free access over telephone.
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Recognition Accuracy: Under real conditions we can expect 97% +/- 2% accuracy for both cellular and landline telephone calls.
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Response Time: Typical recognition time is less than 1 second.
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Multiple Languages Interface: Our ASR algorithms can be trained in-house for any language like English in India, Tamil, Hindi, Telugu, Malayalam,
US English, Australian English, UK English, Spanish etc.
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Echo cancellation: In a voice barge-in situation, when a user interrupts the system prompt, the SLI system detects the user's speech and
stops the play back of its own prompt immediately. But at the same time, our SLI system is insensitive to background (ambient) noise and the
speech of people talking in the background.
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Automatic ASR improvement: A Call Completion Rate (CCR) parameter is used in all of our Spoken Language Interface (SLI) systems to
measure the percentage of calls successfully completed by the system. If the CCR is not satisfactory, the user interface is continuously
modified through self-training of ASR algorithms to improve the CCR.
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Our ASR variants are:
- Speaker independent, automatic speech
recognition with Keyword spotting capabilities, for continuous
speech inputs, enabling friendly interface between user &
application.
- Speaker independent speech
recognition with limited vocabulary for telephony
applications. This can be adapted for voice based selection
& navigation commands.
Functional areas:
- Tele-banking
- Call centers or a 24x7 Customer Support systems
- Unified Messaging Solutions (UMS)
- Value added services over phone
- General enquiry systems
- CRM/SCM/ERP applications
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