发明名称 |
METHOD AND APPARATUS FOR LOW BIT RATE COMPRESSION OF A HIGHER ORDER AMBISONICS HOA SIGNAL REPRESENTATION OF A SOUND FIELD |
摘要 |
The invention is suited for improving a low bit rate compressed and decompressed Higher Order Ambisonics HOA signal representation of a sound field, wherein the decompression provides a spatially sparse decoded HOA representation and a set of indices of coefficient sequences of this representation. From reconstructed signals of the original HOA representation a number of modified phase spectra signals are created using de-correlation filters, which modified phase spectra signals are uncorrelated with the signals of said original representation. The modified phase spectra signals are mixed with each other using predetermined mixing parameters, in order to provide a replicated ambient HOA component. Finally the spatially sparse decoded HOA representation is enhanced with the replicated time domain HOA representation. |
申请公布号 |
WO2016055284(A1) |
申请公布日期 |
2016.04.14 |
申请号 |
WO2015EP72064 |
申请日期 |
2015.09.25 |
申请人 |
THOMSON LICENSING |
发明人 |
KRUEGER, ALEXANDER;KORDON, SVEN;KEILER, FLORIAN |
分类号 |
G10L19/008 |
主分类号 |
G10L19/008 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|