Invention Grant
- Patent Title: Sound field control device
- Patent Title (中): 声场控制装置
-
Application No.: US12782607Application Date: 2010-05-18
-
Publication No.: US08488802B2Publication Date: 2013-07-16
- Inventor: Noriyuki Ohashi
- Applicant: Noriyuki Ohashi
- Applicant Address: JP Hamamatsu-shi
- Assignee: Yamaha Corporation
- Current Assignee: Yamaha Corporation
- Current Assignee Address: JP Hamamatsu-shi
- Agency: Morrison & Foerster LLP
- Priority: JP2009-120792 20090519
- Main IPC: H03G3/00
- IPC: H03G3/00

Abstract:
A sound field control device has an input part through which an audio signal is input. A storage part stores a first factor obtained by calculating a proportion of energy of direct sound in total energy of sound collected in an adjustment environment within a predetermined time. A sound field generation part generates a sound field effect sound from the audio signal input through the input part, and outputs the sound field effect sound at a volume corresponding to the first factor. A calculation part calculates a second factor which represents a ratio of an energy of a direct sound to an energy of sound which is collected in a reproduction environment and which contains the direct sound. A correction part corrects the volume of the sound field effect sound based on a ratio between the first factor and the second factor.
Public/Granted literature
- US20100296658A1 SOUND FIELD CONTROL DEVICE Public/Granted day:2010-11-25
Information query