Headphone device, sound reproduction system, and sound reproduction method
US8184823B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2007 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Feb 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/111
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Disclosed herein is a headphone device, including: a sound pickup section configured to pick up an external sound; a directivity setting section configured to generate a directional pickup audio signal, which is an audio signal obtained by picking up the external sound with a desired directional characteristic, based on an audio signal outputted from the sound pickup section; a loudspeaker; an audio signal generation section configured to generate a cancellation-use audio signal for attenuating the directional pickup audio signal based on the directional pickup audio signal; and a driving signal generation section configured to generate a driving signal, which is an audio signal for driving the loudspeaker and includes at least the cancellation-use audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.