发明名称 |
Audio coding method and audio coding apparatus |
摘要 |
<p>There is provided an audio coding method which is capable of creating coded data of high-quality with no discontinuity in real time without being affected by processing ability of a CPU on a personal computer and how much another application occupies processing on the CPU, in a scheme in which a digital audio signal is divided into plural frequency bands and a coding process is performed for each subband. In order to generate bit allocation information for each of plural frequency subbands into which a digital audio signal is divided, employed are a process for performing bit allocation with high efficiency using a relationship of a signal to mask based on a predetermined psychoacoustic model and a process for performing bit allocation with a lower load. According to processing amount information of the CPU which is occupied by a coding process, bit allocation means to-be-used is changed. <IMAGE></p> |
申请公布号 |
EP0966109(A2) |
申请公布日期 |
1999.12.22 |
申请号 |
EP19990111494 |
申请日期 |
1999.06.14 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KAWAHARA, EIJI |
分类号 |
H03M7/28;H04B1/66;(IPC1-7):H04B1/66 |
主分类号 |
H03M7/28 |
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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