Time tolerant prompt detection
US11778094B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Dec 6, 2021 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Dec 6, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/556
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The location of voice prompts within a call waveform is usually conducted by match filtering a snippet of the prompt (approx. 800 ms) to the call waveform. In an enhanced process that can accommodate transmission errors when detecting voice prompts on lower quality transmission lines, a snippet of a voice prompt may be divided into sniplets, typically 100 ms long. The sniplets can be individually detected. If a sufficient number of sniplets are detected within allowed time tolerances, then this subset of detected sniplets can indicate the presence of the snippet, and thus the associated voice prompt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.