Title:
合成されたスペクトル成分に適合するようにデコードされた信号の特性を使用するオーディオコーディングシステム
Document Type and Number:
Japanese Patent JP5253564
Kind Code:
B2
Abstract:
A method for generating audio information comprises: receiving an input signal and obtaining therefrom a set of subband signals each having one or more spectral components representing spectral content of an audio signal; identifying within the set of subband signals a particular subband signal in which one or more spectral components have a zero value and are quantized by a quantizer having a minimum quantizing level; generating one or more synthesized spectral components that correspond to the one or more zero-valued spectral components in the particular subband signal and that are scaled according to a scaling envelope based upon the minimum quantizing level; generating a modified set of subband signals by substituting the synthesized spectral components for corresponding zero-valued spectral components in the particular subband signal; and generating the audio information by applying a synthesis filterbank to the modified set of subband signals.
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Inventors:
Davidson, Grant Allen
Truman, Michael Mead
Ferrers, Matthew Conrad
Vinton, Mark Stuart
Truman, Michael Mead
Ferrers, Matthew Conrad
Vinton, Mark Stuart
Application Number:
JP2011287051A
Publication Date:
July 31, 2013
Filing Date:
December 28, 2011
Export Citation:
Assignee:
Dolby Laboratories Licensing Corporation
International Classes:
G10L19/02; G10L19/028; G10L21/02; G10L21/0388; H03M7/30
Domestic Patent References:
| JP2001521648A | ||||
| JP2001525079A | ||||
| JP2001324996A |
Foreign References:
| WO2001080223A1 |
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito