| 摘要 |
PURPOSE:To attain a synchronized state by detecting a difference between a writing address and a reading address, and controlling the pitch of a sound signal according to the address difference. CONSTITUTION:A sound signal processing means receives regenerative sound data, decodes the data, and reproduces a sound in a real time. In this case, when the large amount of the sound data are transmitted from an ROM, the count value of a counter 69 is made large, and the pitch is increased. Then, the data amounts read from a memory RAM 23, and transmitted to a D/A converter 24, are increased, and a reading speed is accelerated. Then, a reading bank pointer early appears, the count value is made small, and the pitch is decreased. And also, when the data amounts read from the RAM 23 are larger than those written in the RAM 23, the count value is made small, the pitch is decreased, a loop pit is increased, and the count value is made large. Then, the fine adjustment of the pitch is operated until the writing speed is synchronized with the reading speed in order to attain the synchronization. |
