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Automated Speech Recognizer (ASR)

Technical Summary

LumenVox ASR Technical Summary

The hardware resources required by the LumenVox Automatic Speech Recognizer vary significantly depending on the exact task being performed. The main variables involve the length of audio, total number of simultaneous channels of recognition, and the type of application (specifically the size and complexity of the grammars being used).

Hardware Requirements


For production telephony systems, LumenVox recommends a modern server running a 64-bit operating system with 4-8 CPU cores and 6 GB of RAM.

However, different applications and use cases may have significantly lower or higher requirements. Please contact us for help sizing your specific hardware needs.

Supported Operating Systems



2008, 2012*, 2016* Server (32 & 64-bit)
Windows 7, 10 (32 & 64-bit)
*Windows Server 2012 and 2016 requires a 64-bit processor, however is capable of running both 32 & 64-bit applications.


Red Hat & CentOS 6 (64-bit only)

Red Hat & CentOS 7 (32 & 64-bit)

Standards Supported


VXML (Voice XML)
SRGS (Speech Recognition Grammar Specification)
GrXML (Grammar XML, an SRGS format)
SISR (Semantic Interpretation for Speech Recognition)

C/C++ API (Application Programming Interface)
MRCPv1, MRCPv2 (Media Resource Control Protocol)
LAMP (Linux, Apache, MySQL, PHP) Web management tools

Learn More

We are confident that you will find even more features and resulting benefits from using our Speech Recognizer. If you have any questions on these, or other desired capabilities, just contact us via the form below. We’d be happy to help!

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