发明名称 |
Signal encoding and decoding system allowing adding of signals in a form of frequency sample sequence upon decoding. |
摘要 |
In a signal compressing and encoding apparatus, a plurality of A/D converters sample input audio signals synchronously to produce time sample strings. An audio encoding circuit transforms time sample sequences in time/frequency by a frame interval to produce frequency sample sequences. The frequency sample sequences are compressed, encoded and formatted into a frame structure to generate audio bit streams. The audio bit streams are multiplexed by a formatter into a multiplexed bit stream. On the other hand, in a compressed signal decoding circuit, a quantization decoder decodes the frequency sample sequences for each bit stream separated and extracted selectively out of the multiplexed bit stream. A adding result the decoded frequency sample sequences to produce a summing result. The summing result is then transformed in frequency/time by a frequency/time mapping to produce the time sample sequences. <IMAGE> |
申请公布号 |
EP0673167(A2) |
申请公布日期 |
1995.09.20 |
申请号 |
EP19940118301 |
申请日期 |
1994.11.21 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
NAKAMURA, SHIN-ICHI, C/O INTELLECTUAL PROP. DIV. |
分类号 |
G11B20/10;G10L11/00;G10L19/00;G10L25/00;H03M7/30;H04B1/66;H04B14/04;H04H1/00;H04N5/073;H04N5/60 |
主分类号 |
G11B20/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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