CODED HOA DATA FRAME REPRESENTATION THAT INCLUDES NON-DIFFERENTIAL GAIN VALUES ASSOCIATED WITH CHANNEL SIGNALS OF SPECIFIC ONES OF THE DATA FRAMES OF AN HOA DATA FRAME REPRESENTATION

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专利权人:

Dolby International AB

发明人:

KORDON, Sven,KRUEGER, Alexander

申请号：

EP20150729524

公开号：

EP3162087(A1)

申请日:

2015.06.22

申请国别(地区):

欧洲专利局

年份:

2017

代理人:

摘要：

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 (AA).

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中国工程科技知识中心

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