Buzz detecting method and system
US9215540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2014 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Jul 8, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R29/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A buzz detecting method and a buzz detecting system are provided for testing whether an under-test sound playing device generates a buzz while playing sound. By an application program module, plural under-test sound signals from the under-test sound playing device are converted into plural under-test frequency-domain signals corresponding to the under-test sound signals through Fourier transform. Moreover, the application program module calculates plural under-test noise ratios corresponding to the frequencies of respective under-test sound signals according to respective under-test frequency-domain signals. After the plural under-test noise ratios are compared with plural standard noise ratios from a standard sound playing device, the application program module may automatically judge whether the under-test sound playing device generates a buzz while playing sound. Since the testing procedure does not need to be implemented by the trained testers, the overall efficiency is largely enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.