公开(公告)号：US5023913A

公开(公告)日：1991-06-11

申请号：US358282

申请日：1989-05-26

申请人： Masaharu Matsumoto ,  Katsuaki Satoh ,  Seiichi Ishikawa ,  Mitsuhiko Serikawa ,  Akihisa Kawamura ,  Hikari Hashimoto

发明人： Masaharu Matsumoto ,  Katsuaki Satoh ,  Seiichi Ishikawa ,  Mitsuhiko Serikawa ,  Akihisa Kawamura ,  Hikari Hashimoto

IPC分类号： H03G5/16 ,  H04R3/12

CPC分类号： H03G5/165 ,  H04R3/12

摘要： An apparatus for changing a sound field, comprising at least two signal processing means, which can smoothly and continuously switch a sound field into an arbitrary sound field without a break of signals by alternately switching one of the signal processing means into the other.

公开(公告)号：US5164840A

公开(公告)日：1992-11-17

申请号：US400190

申请日：1989-08-28

申请人： Akihisa Kawamura ,  Masaharu Matsumoto ,  Mitsuhiko Serikawa ,  Ryo Tagami ,  Katsuaki Sato ,  Hiroko Yoshida ,  Hikari Hashimoto

发明人： Akihisa Kawamura ,  Masaharu Matsumoto ,  Mitsuhiko Serikawa ,  Ryo Tagami ,  Katsuaki Sato ,  Hiroko Yoshida ,  Hikari Hashimoto

IPC分类号： G11B20/00 ,  G11B27/00 ,  G11B27/10 ,  G11B27/32 ,  G11B27/34 ,  H04N9/802 ,  H04S1/00

CPC分类号： G11B20/00992 ,  G11B27/007 ,  G11B27/107 ,  G11B27/322 ,  G11B27/34 ,  H04N9/802 ,  H04S1/007

摘要： Control codes for controlling processing of an audio signal by a sound field variation circuit to produce desired sound fields are recorded on a monaural track of a video tape concurrent with recording of video and audio signals, and can thereby be subsequently played back for producing sound fields which are respectively synchronized with video images.