Systems and methods to disrupt phase cancellation effects when using headset devices
US10652398B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2017 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Sep 29, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/01
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In applications where assisted listening headphones are worn inside of a theater, phase cancellation effects cause the headset wearer to perceive the audio as reduced in volume and distorted. These undesirable phase cancellation effects may be disrupted through preprocessing or real time processing of the headset audio track by summing acoustical noise with the original headset audio track and providing this altered audio track to the headset. The acoustical noise is modulated such that it is imperceptible to the headset wearer while at the same time disrupting undesirable phase cancellation effects, which would otherwise occur if the headset audio track was provided unaltered. Thus, the preprocessing of the headset audio preserves the integrity of the intended headset audio, as perceived by the headset wearer, in headsets worn in a theater environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.