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信号の高周波成分を生成するためのシステム及び方法
专利权人:
ドルビー・インターナショナル・アーベー
发明人:
エクストランド,ペール,ヴィレモエス,ラルス,ヘデリン,ペール
申请号:
JP20150148603
公开号:
JP6058761(B2)
申请日:
2015.07.28
申请国别(地区):
日本
年份:
2017
代理人:
摘要:
The present document relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR), and to digital effect processors, e.g. so-called exciters, where generation of harmonic distortion adds brightness to the processed signal. In particular, a system configured to generate a high frequency component of a signal from a low frequency component of the signal is described. The system may comprise an analysis filter bank (501) configured to provide a set of analysis subband signals from the low frequency component of the signal; wherein the set of analysis subband signals comprises at least two analysis subband signals; wherein the analysis filter bank (501) has a frequency resolution of ” f . The system further comprises a nonlinear processing unit (502) configured to determine a set of synthesis subband signals from the set of analysis subband signals using a transposition order P ; wherein the set of synthesis subband signals comprises a portion of th
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