ASR

ASR stands for Automatic Speech Recognition. It represents a collection of technologies required for an IVR system to listen for specific words and phrases, detect the speech from within an audio sample, analyze the speech relative to what is being listened for, and provide the final text representing what the ASR system believes was uttered.

IVR-specific implementations of ASR do grammar-driven recognition. The ASR engine must be informed of the specific utterances that it is likely to hear. The list of utterances may number in the tens of thousands (with names or cities, for instance) but this list must nonetheless be finite. The grammar formats supported by the Plum Voice Platform are SRGS and JSGF.

Related links:

• Speech Recognition - Wikipedia
• Nuance Open Speech Recognizer