发明申请
US20150304791A1 VIRTUAL HEIGHT FILTER FOR REFLECTED SOUND RENDERING USING UPWARD FIRING DRIVERS
有权
虚拟高度过滤器,用于使用更高级的驱动程序进行反射式声音渲染
- 专利标题: VIRTUAL HEIGHT FILTER FOR REFLECTED SOUND RENDERING USING UPWARD FIRING DRIVERS
- 专利标题(中): 虚拟高度过滤器,用于使用更高级的驱动程序进行反射式声音渲染
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申请号: US14759182申请日: 2014-01-07
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公开(公告)号: US20150304791A1公开(公告)日: 2015-10-22
- 发明人: Brett G. CROCKETT , Christophe CHABANNE , Mark TUFFY , Alan J. SEEFELDT , C. Phillip BROWN , Patrick TURNMIRE
- 申请人: DOLBY LABORATORIES LICENSING CORPORATION
- 申请人地址: US CA San Francisco
- 专利权人: DOLBY LABORATORIES LICENSING CORPORATION
- 当前专利权人: DOLBY LABORATORIES LICENSING CORPORATION
- 当前专利权人地址: US CA San Francisco
- 国际申请: PCT/US2014/010466 WO 20140107
- 主分类号: H04S7/00
- IPC分类号: H04S7/00 ; H04R3/04 ; H04R1/02 ; H04R5/02
摘要:
Embodiments are directed to speakers and circuits that reflect sound off a ceiling to a listening location at a distance from a speaker. The reflected sound provides height cues to reproduce audio objects that have overhead audio components. The speaker comprises upward firing drivers to reflect sound off of the upper surface and represents a virtual height speaker. A virtual height filter based on a directional hearing model is applied to the upward-firing driver signal to improve the perception of height for audio signals transmitted by the virtual height speaker to provide optimum reproduction of the overhead reflected sound. The virtual height filter may be incorporated as part of a crossover circuit that separates the full band and sends high frequency sound to the upward-firing driver.
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