Title:
ＨＯＡデータ・フレーム表現のデータ・フレームの個々のもののチャネル信号に関連付けられた非差分的な利得値を含む符号化されたＨＯＡデータ・フレーム表現
Document Type and Number:
Japanese Patent JP6972195
Kind Code:
B2
Abstract:
When compressing an HOA data frame representation, a gain control (15, 151) is applied for each channel signal before it is perceptually encoded (16). The gain values are transferred in a differential manner as side information. However, for starting decoding of such streamed compressed HOA data frame representation absolute gain values are required, which should be coded with a minimum number of bits. For determining such lowest integer number (βe) of bits the HOA data frame representation (C(k)) is rendered in spatial domain to virtual loudspeaker signals lying on a unit sphere, followed by normalisation of the HOA data frame representation (C(k)) . Then the lowest integer number of bits is set to βe=⌈log2⌈log2KMAX⋅O⌉+1⌉.
Inventors:
Cordon, Sven
Kruger, Alexander
Kruger, Alexander
Application Number:
JP2020016868A
Publication Date:
November 24, 2021
Filing Date:
February 04, 2020
Export Citation:
Assignee:
Dolby International Arb
International Classes:
G10L19/008
Domestic Patent References:
| JP2012133366A |
Foreign References:
| WO2013171083A1 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki
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