| 摘要 |
PURPOSE:To obtain an acoustic signal having high clarity and high sudible properties through a simple circuit by storing an address of the coding information containing a mark together with an address preceding the first addressby a step and defining either one of the addresses stored in response to the address setting signals as a head address of a block that preforms reading of an input. CONSTITUTION:The acoustic signal supplied through an input terminal 2 divides the digital signals into a prescribed block length and writes them successively to a RAM7 with marks via a compressor 3, a sample and hold circuit 4, an A/D converter 5, a writing latch 6 and a marking circuit 10 and under the control of a write/read controller 8. A mark detecting circuit 21 detects a mark signal. Then two detection signals are produced between two mark signals (m), and the second detection signal is supplied to reading counters A14a and B14b synchronously with load signals j1 and j2. The address data given from latches C19 and D20 are sent to a RAM7 via a multiplexer 17, and the designated data is read out and delivered via D/A converters 24a and 24b, an integrator 25, an expander 26 and a filter 27. |
