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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
• Word Spotting plug-in
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| Tuning Tools |
• Phonetic Learning
• Acoustic Model Adaptation |
| Supported Languages |
American Spanish, Mexican, Colombian, Argentinian, Chilean & Castilian Spanish, Norwegian, Finnish, Swedish, Danish, U.S., U.K. & Australian English, French, Canadian French, Russian, German, Italian, Dutch, Polish, Turkish, Greek, Portuguese, Brazilian, Catalan, Valencian, Galician, Arabic*, Romenian* (* under development) |
| Grammar Formalisms |
• JSGF (Java Speech Grammar Format)
• W3C SRGS 1.0 (XML and ABNF Form) + SISR 1.0 |
| OS
supported |
MS Windows (7, XP, Vista, Server 2003, Server 2008**), Red Hat Enterprise Linux (3, 4, 5**), SUSE Linux 10, 11**, CentOS 5.2
** also available for 64 bit version |
| Interfaces |
• Loquendo API (C/C++)
•Loquendo API (.NET e C#)
• Loquendo API (Java)
• Intel Dialogic Audio Source support (only Windows) |
| 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 are no longer supported. |
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©2001-2010 Loquendo. All Rights Reserved.
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