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| Loquendo
ASR - Technical Specifications |
| Main
Features |
• Speaker Independent
• Open Vocabulary
• Noise robustness (e.g. in-car, wireless, etc.)
• Optimized for Telephonic Speech
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| Basic
Technology |
A combination
of Neural Networks and Continuous Density Hidden Markov Models |
| Configurable
Recognition Modalities |
• Grammar based
• Continuous Speech Recognition with Statistical Language
Modeling
• Free or Forced Phonetic Decoding |
| Key
features |
• N-Best Decoding
• Confidence Scores at sentence and word level
• Tunable Voice Detection sensitivity
• Improved Barge-In functionalites
• Speech Complete/Incomplete Timeout
• Garbage rules
• Grammar handling and fast grammar compilation on
the fly
• Re-usable Built-in grammar library
• Multilingual grammars
• Voice enrolled grammar
• Natural Language Processing
• Optimized for VoiceXML applications
• Loquendo Speaker Verification
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| Tuning Tools |
• Phonetic Learning
• Acoustic Model Adaptation |
| Supported Languages |
Australian English, US English, UK English, French, Canadian French, American Spanish, Argentinian, Chilean, Mexican and Castilian Spanish, Catalan, Valencian, Galician, Russian, German, Italian, Dutch, Polish, Turkish, Greek, Portuguese, Brazilian, Danish, Finnish and Swedish, as well as Mixed Language Castilian Spanish and Catalan |
| Grammar Formalisms |
• JSGF (Java Speech Grammar Format)
• W3C SRGS 1.0 (XML and ABNF Form) + SISR 1.0 |
| OS
supported |
MS Windows (XP, Vista, Server 2003, Server 2008*), Red Hat Enterprise Linux (3, 4, 5*), SUSE Linux Enterprise 10.0 * also available for 64 bit version |
| Interfaces |
• Loquendo API (C/C++)
• MRCP (for Client Server Architecture)
• Intel Dialogic Audio Source support
• DSR support |
| CPU Requirements |
Connected Digits
Recognition: 80 channels on an Intel Pentium 3.2 GHz CPU
Grammar with 10,000 words: 20 channels on an Intel Pentium
IV 3.2 GHz CPU |
| Memory Requirements |
• 15 MB per language
shared among channels
• Few MB per channel depending on the recognition task
(e.g. 5 MB for Connected Digits Recognition, 15
MB for a grammar with 10.000 words) |
From September 2009, versions of Loquendo ASR up to and including
version 5 will no longer be supported. |
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©2001-2009 Loquendo. All Rights Reserved.
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