| 摘要 |
PURPOSE:To reproduce a sound signal even at the time of reproduction of a variable speed of a VTR by storing once a reproduction sound digital signal, and reading the signal from the memory while the reading address counter of the memory is reset compulsively. CONSTITUTION:When a RAM(A)12 operates writing, a RAM(B)13 operaters reading. On the other hand, when the RAM13 operates writing, the RAM12 operates reading. By delaying the clock signal of a reading address counter 20 from an input terminal 22 more than that of a writing address counter 19 from an input terminal 21 at this time, read-out of the signal from the RAM(A)12 or the RAM(B)13 is delayed, and the extension of a reproduction sound digital signal is executed. By executing the switching by a switching signal 18 so as to read the signal from the other RAM when read-out of the signal from one RAM terminates, the sound digital signal which is recorded by compression is extended, and is inputted to a DA converter 14 as the original sound digital signal. |
