System for automated testing of perceptual distortion of prompts from voice response systems
US6477492B1 · kind B1 · utility
76Cited by
13References
40Claims
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Key dates
| Filing date | Jun 15, 1999 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jun 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/69
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A Perceptual Speech Distortion Metric (PSDM) generates perceptual distortion values for voice prompts received from a voice response system by comparing the received voice prompts with reference signals associated with the same states in the voice response system. The perceptual distortion values identify the voice prompts as either correct or incorrect responses to signal generator inputs and also quantify an amount of perceptual distortion in the voice prompts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.