Speech coding,申请号GB20130000715-传众专利搜索

Speech coding

申请公布号：GB2499505(B)

申请号：GB20130000715

申请日期：2013.01.15

申请公布日期：2014.01.08

申请人：

SKYPE

发明人：KOEN VOS;SOREN SKAK JENSEN

分类号：G10L19/12

主分类号：G10L19/12

摘要：A received speech signal encoded according to a source filter model is decoded by determining a spectral envelope signal, and deriving a remaining signal representative of the modelled filter comprising successive periodic portions by, at intervals, determining correlation between the periodic portions and predicting later portions based on stored versions of earlier portions. The remaining signal is then reconstructed and a decoded speech signal generated. The stored version of the earlier portions is also, at intervals, transformed prior to generating the predictions.