| 摘要 |
PCT No. PCT/JP84/00433 Sec. 371 Date May 9, 1985 Sec. 102(e) Date May 9, 1985 PCT Filed Sep. 10, 1984 PCT Pub. No. WO85/01377 PCT Pub. Date Mar. 28, 1985.An audio signal reproducing apparatus includes a player unit (10) and a pitch conversion unit (20). The player unit (10) reproduces, at variable speed, audio signal data from a recording medium (11) on which the audio signal data has been recorded at a predetermined sampling frequency Fs. The pitch conversion unit (20) writes into a memory the reproduced audio signal data obtained by the player unit (10) by means of a write clock which corresponds to a reproduction sampling frequency fs and reads out the reproduced audio signal data from the memory by means of a read clock which corresponds to an oscillation frequency fp from an oscillator which oscillates at a predetermined sampling frequency Fs, thereby effecting pitch conversion processing with respect to the reproduced audio signal. The pitch conversion unit (20) is composed of a pitch conversion processor section (21) which effects pitch conversion processing with respect to the reproduced audio signal at any desired pitch conversion ratio, and a pitch ratio control section (22) which automatically sets the pitch conversion ratio in relation to the pitch conversion processor section to a predetermined value by means of a signal representing the start or end point of the reproduced audio signal. |
