An apparatus for recording and/or reproducing, in successive slant tracks on a record tape, an information signal comprised of at least an audio signal and an index signal for use in controlling transportation of the tape, ccmprising:
- audio signal processing means for converting an input audio signal to a digitized form in which the audio data for a predetermined length of time is grouped as a plurality of data blocks;
- transducer means connected to said audio signal processing means for recording and/or reproducing said grouped data blocks containing the digitized audio signal for said predetermined length of time in a first part of a respective slant track on the tape;
- index signal generating means including means for generating a coded index signal to indicate respective input information;
- index area signal generating means for providing an index area signal in predetermined timed relation to scanning by said transducer means of said first part of each said slant track;
- and
- control means responsive to said index area signal for supplying said coded index signal to said transducer means for recording by the latter in a second part of said respective slant track which is located adjacent an end of said first part of said respective slant track.