发明名称 |
PROCESS FOR DETERMINING THE TYPE OF CODING TO BE SELECTED FOR CODING AT LEAST TWO SIGNALS |
摘要 |
When several signals (k1, k2) that are not independent from each other are coded, the appropriate type of coding is selected depending on a similarity measurement. In one aspect of the invention, the similarity measurement is determined by one of the signals (k1, k2) being at first coded according to the intensity stereo process and then decoded, in order to create a signal (ki1, ki2) affected by a coding error. Said signal and the corresponding non-coded signal are then transformed into the frequency range. The actually audible spectral components of both the signals (ki1, ki2) affected by a coding error and the corresponding signal (k1, k2) unaffected by a coding error are selected or evaluated in the frequency range by using a listening threshold determined by a psychoacoustic calculation. When the degree of similarity is high, an intensity stereo coding process is carried out, otherwise the channels are separately coded.
|
申请公布号 |
WO9508227(A1) |
申请公布日期 |
1995.03.23 |
申请号 |
WO1994EP02250 |
申请日期 |
1994.07.08 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWAND;HERRE, JUERGEN;GRILL, BERNHARD;EBERLEIN, ERNST;BRANDENBURG, KARLHEINZ;SEITZER, DIETER |
发明人 |
HERRE, JUERGEN;GRILL, BERNHARD;EBERLEIN, ERNST;BRANDENBURG, KARLHEINZ;SEITZER, DIETER |
分类号 |
G10L19/008;H03M7/30;H04B1/66;H04H60/09;H04N5/00;H04S1/00;(IPC1-7):H04H5/00 |
主分类号 |
G10L19/008 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|