Method for reducing parasitic vibrations of a loudspeaker environment and associated processing device
US9443502B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2012 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Jan 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for reducing parasitic vibrations of a loudspeaker environment while maintaining the perception of the low frequencies of an original electric sound signal for broadcast after processing by the loudspeaker having a cut-off frequency. A vibration frequency band is identified that causes the loudspeaker to vibrate. A low frequency band of the original sound signal having a frequency close to the cut-off frequency of the loudspeaker is identified as an upper limit. At least one harmonic signal from the isolated low frequency band of the original sound signal is generated. The original sound signal and the harmonic signal are combined to obtain a recombined signal. The vibration frequency band is removed from the recombined signal to obtain a signal for broadcast by the loudspeaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.