Title:
既存のオーディオゲインメタデータを使用した信号のクリッピングの保護
Document Type and Number:
Japanese Patent JP5603339
Kind Code:
B2
Abstract:
The application describes a method and an apparatus to prevent clipping of an audio signal when protection against signal clipping by received audio metadata is not guaranteed. The method may be used to prevent clipping for the case of downmixing a multichannel signal to a stereo audio signal. According to the method, it is determined whether first gain values (4) based on received audio metadata are sufficient for protection against clipping of the audio signal. The audio metadata is embedded in a first audio stream (1). In case a first gain value (4) is not sufficient for protection, the respective first gain value (4) is replaced with a gain value sufficient for protection against clipping of the audio signal. Preferably, in case no metadata related to dynamic range control is present in the first audio stream (1), the method may add gain values sufficient for protection against signal clipping.
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Inventors:
シュイルドバッハ, Wolff gang アー
Grotesque エスケル, Alexander
Grotesque エスケル, Alexander
Application Number:
JP2011534654A
Publication Date:
October 08, 2014
Filing Date:
October 26, 2009
Export Citation:
Assignee:
Dolbey International アーベー
International Classes:
G10L19/00; G10L19/02; H04R3/00
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Yuji Tsuruya
Shinsuke Onuki
Tadashige Ito
Yuji Tsuruya