发明名称 |
Geluidscodeerorgaan dat een snel analyse-filteralgoritme toepast, en geluidsdecodeerorgaan dat een snel synthesefilteralgoritme toepast. |
摘要 |
An audio encoder/decoder adopting a high-speed analysis filtering algorithm is provided. The audio encoder has a mapping unit for classifying a received audio signal according to a frequency band by using the high-speed band analysis filtering algorithm, a psychoacoustic model for assigning bits to each frequency band using psychoacoustic characteristics, a quantizing and encoding unit for quantizing and encoding the mapped signal according to the number of bits assigned to each frequency band, and a frame packing unit for generating a bit stream from a signal output from said quantizing and encoding unit. The audio decoder has a frame unpacking unit for unpacking a signal from a coded and received bit stream, a decoding and inverse-quantizing unit for decoding and inverse-quantizing said quantized signal, and an inverse-mapping unit for time/frequency-inverse-mapping the inverse-quantized signal by using the high-speed band synthesis filtering algorithm. |
申请公布号 |
NL1004080(A1) |
申请公布日期 |
1997.03.25 |
申请号 |
NL19961004080 |
申请日期 |
1996.09.20 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
SUNG-HEE PARK |
分类号 |
G10L19/02;G10L19/00;H03M7/30;H04B1/66 |
主分类号 |
G10L19/02 |
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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