US 3,939,489 A · Recording and reproducing apparatus

Abstract

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.

Claims20

Dependent claims

Recording and reproducing apparatus comprising:

means for supplying stereo signal components including a monaural signal component;
signal processing means for replacing said supplied monaural signal component included in said stereo signal components with a further monaural signal component;
first recording means for recording said processed stereo signal components including said further monaural signal component;
second recording means for recording said supplied stereo signal components including said supplied monaural signal component;
reproducing means for reproducing the recorded stereo signal components including said further monaural signal component and the recorded stereo signal components including said supplied monaural signal component;
and
sound generating means coupled to said reproducing means for generating sounds corresponding to said respective reproduced signals.

4 more elements

Voice changing apparatus for replacing the original voice signals included in combination with musical signals with further voice signals, comprising:

first means for supplying a first portion of said combined musical and original voice signals;
second means for supplying a second portion of said combined musical and original voice signals;
first combining means coupled to said first and second means for combining said first and second portions of signals in voice signal cancelling relation to thereby produce said first portion of musical signals in first combination with said second portion of musical signals;
voice signal generating means for generating said further voice signals;
inserting means coupled to said voice signal generating means for inserting said further voice signals into said first combination of first and second portions of musical signals;
second combining means coupled to said first and second means for combining said first and second portions of signals in a second combination, said second combination including said first and second portions of musical signals and said original voice signals;
a first electroacoustic transducer responsive to said first combination of musical signals including said inserted further voice signals for generating corresponding voice and music sounds;
and
a second electroacoustic transducer responsive to said second combination of musical signals including said original voice signals for generating corresponding voice and music sounds.

6 more elements

Dependencies are inferred from the claim text.

Recording and reproducing apparatus

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Recording and reproducing apparatus

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Abstract

Claims20