发明名称 |
CODED SIGNAL FORMATTING FOR ENCODER AND DECODER OF HIGH-QUALITY AUDIO |
摘要 |
An encoder applies a digital filterbank such as a transform or subband filterbank to an input signal to generate frequency subband information, encodes the resultant subband information using adaptive bit allocation to generate fixed-length values represented by fixed numbers of bits and variable-length values represented by variable numbers of bits, and formats the subband information into an encoded signal in which the fixed-length values are assembled into preestablished positions within the encoded signal. In response to an encoded signal including subband information represented by fixed-length values and variable-length values, a decoder extracts fixed-length values represented by fixed numbers of bits from preestablished positions within the encoded signal, extracts variable-length values represented by variable numbers of bits, wherein the variable numbers of bits are established in response to fixed-length values, and generates an output signal by applying an inverse filterbank to the extracted subband information. <IMAGE> |
申请公布号 |
SG82549(A1) |
申请公布日期 |
2001.08.21 |
申请号 |
SG19960008277 |
申请日期 |
1990.01.29 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION |
发明人 |
FIELDER, LOUIS DUNN;DAVIS, MARK FRANKLIN |
分类号 |
G11B20/10;G05D11/13;G06T9/00;G10L19/02;H03M7/30;H04B1/66;H04B14/00;H04B14/04;(IPC1-7):G10L7/04;G10L7/06;G10L7/00 |
主分类号 |
G11B20/10 |
代理机构 |
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地址 |
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