公开(公告)号：US3939489A

公开(公告)日：1976-02-17

申请号：US500257

申请日：1974-08-26

申请人： Norifumi Kawashima ,  Kiyokazu Kamijima ,  Yoshiaki Yakeuchi

发明人： Norifumi Kawashima ,  Kiyokazu Kamijima ,  Yoshiaki Yakeuchi

IPC分类号： G11B5/00 ,  G11B5/027 ,  G11B20/00 ,  G11B20/02 ,  H04S1/00 ,  G11B27/02

CPC分类号： H04S1/00 ,  G11B20/00992 ,  G11B5/00

摘要： Recording and reproducing apparatus is disclosed wherein stereo signal components which include a monaural signal component are supplied to a signal processing circuit. The signal processing circuit replaces the supplied monaural signal component with a further monaural signal component. The thus processed stereo signal components, including the further monaural signal component, are supplied to a first recording head for recording on a medium. The supplied stereo signal components including the supplied monaural signal component are coupled to a second recording head for recording on the medium. The recorded stereo signal components including the further monaural signal component and the recorded stereo signal components including the supplied monaural signal component are reproduced from the medium and sounds corresponding to the reproduced signals are generated. The reproduced sounds thus include the stereo signal components, the further monaural signal component and the supplied monaural signal component so that both monaural signal components can be audibly compared. In one embodiment, reproduction of the supplied monaural signal component can be supressed, whereby the generated sounds represent the further monaural signal component in combination with the supplied stereo components.

摘要翻译： 公开了包括单声道信号分量的立体声信号分量被提供给信号处理电路的记录和再现装置。 信号处理电路用另外的单声道信号分量代替所提供的单声道信号分量。 将由此处理的立体声信号分量（包括另外的单声道信号分量）提供给用于在介质上记录的第一记录头。 提供的包括所提供的单声道信号分量的立体声信号分量被耦合到用于在介质上记录的第二记录头。 包括所述另外的单声道信号分量和包括所提供的单声道信号分量的所记录的立体声信号分量的所记录的立体声信号分量从介质再现，并且产生与再现信号相对应的声音。 因此，再现的声音包括立体声信号分量，另外的单声道信号分量和所提供的单声道信号分量，使得可以可听地比较两个单声道信号分量。 在一个实施例中，可以抑制所提供的单声道信号分量的再现，由此所产生的声音与所提供的立体声分量结合表示进一步的单声道信号分量。