Prompt detection by dividing waveform snippets into smaller snipplet portions
US11825025B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Dec 6, 2021 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Jan 19, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/556
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Prompt snippets (typically 800 ms long) that are used to detect voice prompts within a call waveform may be divided into smaller sniplet portions (approx. 100 ms) long. The presence of a prompt in a call waveform may be detected by detecting the sniplets and determining if a sufficient number of the sniplets of a snippet were detected in sequence and within allowable time constraints. The use of sniplets improves accuracy of prompt detection in call waveforms in lower quality transmissions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.