Title:
実数値のフィルタバンクにおけるスペクトルエンベロープ調整によって生じたエイリアシングを低減するための方法
Document Type and Number:
Japanese Patent JP5557467
Kind Code:
B2
Abstract:
The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
Inventors:
クヨル ring クリストフェル
ヴィレモエス Lars
ヴィレモエス Lars
Application Number:
JP2009109604A
Publication Date:
July 23, 2014
Filing Date:
April 28, 2009
Export Citation:
Assignee:
the Dolbey International アクチ -- a mullet -- get DOLBY INTERNATIONAL AB
International Classes:
H03H17/02; G10L19/02; G10L25/48; G10L25/18
Attorney, Agent or Firm:
Zenkei Okada