RECORDING SYSTEM AND RECORDING PRODUCTION SYSTEM

PURPOSE:To discriminate easily the presence or absence of recording of a PCM sound signal to plural track channels by recording the PCM sound signal superimposingly on a track channel with a discrimination signal. CONSTITUTION:The discrimination signal 34 is recorded superimposingly on the PCM sound signal to PCM data parts 23, 33 ... of the 1st-6th segments, and an index area is provided after the PCM data part of each segment and the 1st-6th index signals 28 ... are recorded independently. A reproducing signal from the 2nd channel rotary head H2 and auxiliary rotary head H3 is fed to detection circuits 7alpha, 7beta using a PLL via band pass filters 6alpha, 6beta and the discrimination signal and the index signal are reproduced from the head having a small aximuth loss in the rotary heads H2, H3.