发明授权
US5365553A Transmitter, encoding system and method employing use of a bit need
determiner for subband coding a digital signal
失效
发射机，编码系统和采用使用位需求确定器的方法来对数字信号进行子带编码
- 专利标题： Transmitter, encoding system and method employing use of a bit need determiner for subband coding a digital signal
- 专利标题（中）： 发射机，编码系统和采用使用位需求确定器的方法来对数字信号进行子带编码
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申请号： US144093申请日： 1993-10-27
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公开(公告)号： US5365553A公开(公告)日： 1994-11-15
- 发明人: Raymond N. J. Veldhuis , Robbert G. van der Waal , Leon M. van de Kerkhof , Gerrit J. Keesman
- 申请人： Raymond N. J. Veldhuis , Robbert G. van der Waal , Leon M. van de Kerkhof , Gerrit J. Keesman
- 申请人地址： NY New York
- 专利权人： U.S. Philips Corporation
- 当前专利权人： U.S. Philips Corporation
- 当前专利权人地址： NY New York
- 主分类号： G06T9/00
- IPC分类号： G06T9/00 ; H04B1/66
摘要：
Transmitter, encoding system and method for subband coding a digital signal. The encoding system includes a splitter for dividing the digital signal into subband signals SB.sub.1, . . . , SB.sub.M ; a quantizer unit for quantizing time-equivalent q sample signal blocks of the subband signals; a bit need determiner and a bit allocator. The bit need determiner determines a bit need b.sub.m which corresponds to the number of bits by which the q samples in a time-equivalent signal block in a subband signal SB.sub.m should be represented, where 1.ltoreq.m.ltoreq.M. The bit allocator allocates n.sub.m bits to each of the q samples of the time-equivalent signal block of subband signal SB.sub.m on the basis of the bit need b.sub.m and an available bit quantity B, n.sub.m being the number of bits by which the q samples in the time-equivalent signal block of subband signal SB.sub.m will actually be represented, where 1.ltoreq.m.ltoreq.M.
公开/授权文献
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