| 摘要 |
PROBLEM TO BE SOLVED: To provide an MPEG audio reproducing device which reproduces audio signals that are easily understood during a variable speed reproducing. SOLUTION: An MPEG audio reproducing device 1 consists of a reproducing speed detecting circuit 2, an MPEG audio decoder 3, a speech speed conversion processing circuit 4, a D/A converter 5 and an audio amplifier 6. Moreover, an MPEG reproducing device is provided with an audio-video purser (an AV purser) and an MPEG video decoder 12 in addition to the device 1. The circuit 4 consists of a DSP 31, a ring memory 32 and an up-down counter 33. The circuit 4 expands the time length of the voice segment inputted during a high speed reproducing and reduces the time length of each silence interval. During a low speed reproducing, the time length of each voice segment is expanded, the time length of each silence interval is reduced or each silence interval is deleted, each voice segment is connected together and inserted into a silecne interval. |
