公开(公告)号：US10149053B2

公开(公告)日：2018-12-04

申请号：US15657142

申请日：2017-07-22

申请人： Onkyo Corporation

发明人： Hiroki Kurosaki ,  Tsuyoshi Kawaguchi ,  Yoshinori Nakanishi ,  Hiroyuki Asahara ,  Norimasa Kitagawa

IPC分类号： H04R3/04 ,  H03G3/30 ,  H03G5/16 ,  H04S1/00 ,  H03G9/02 ,  H04R3/00

摘要： To resolve volume shortage of middle and high band of speaker reproduction sound. A DSP 4 performs LPF processing to extract low frequency component of an audio signal to which the first volume processing is performed, DRC processing to compress the audio signal to which the LPF processing is performed in case that the audio signal to which the LPF processing is performed is not less than a predetermined signal level, HPF processing to extract high frequency component of the audio signal to which the first volume processing is performed, second volume processing to attenuate the audio signal to which the HPF processing is performed based on the volume value that is received, and synthesis processing to synthesize the audio signal to which the DRC processing is performed and the audio signal to which the second volume processing is performed.