专利检索 ap:("Ryo Tsutsui" OR "Ivan Setiawan" OR "Yoshihide Iwata") AND inv:"Ivan Setiawan" 第 1 页

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发明授权
Audio bandwidth expansion 有权

公开(公告)号：US07676043B1

公开(公告)日：2010-03-09

申请号：US11364116

申请日：2006-02-28

申请人： Ryo Tsutsui , Ivan Setiawan , Yoshihide Iwata

发明人： Ryo Tsutsui , Ivan Setiawan , Yoshihide Iwata

IPC分类号： H04R5/00

CPC分类号： H04S1/002 , G10L21/038

摘要： Bandwidth expansion for audio signals by frequency band translations plus adaptive gains to create higher frequencies; use of a common channel for both stereo channels limits computational complexity. Adaptive cut-off frequency determination by power spectrum curve analysis, and bass expansion by both fundamental frequency illusion and equalization.