| 摘要 |
PURPOSE:To obtain a reproducing analog signal having a high quality even if a medium suffers single damage of a scratch or so, by encoding digitally an analog sound signal, storing it in a storage medium, comparing and synthesizing it at the time of reproducing, and compensating the storage contents. CONSTITUTION:When recording a sound signal, a sound caught by a microphone 1 is subjected to mixing and amplification adjustment by a mixing and amplifying circuit 2, and is sent to an encoding circuit 3 as an analog sound signal AUD. The encoding circuit 3 samples the signal AUD by a prescribed cycle T, and encodes it. In this case, a parity bit for detecting an error is added to it, it is sent out to a recording head controlling circuit 4 as a digital sound signal DAUD, and is written in a storage medium 6 through a recording head 5. At the time of reproducing, a digital signal which is read out in accordance with the rotation from the medium 6 by a reproducing head 7 being at a position of a radius (r) from the center 6P of the storage medium 6 is sent to a comparing and synthesizing circuit 8. The circuit 8 selects a normal one at every corresponding unit information, sends it out to a digital/analog converting circuit 9 as a signal DAUR, amplifies it as an analog sound signal AUR by an amplifying circuit 10, and sends it out to an output device 11. |
