Title:
周波数ドメインプロセッサ、時間ドメインプロセッサ及び連続的な初期化のためのクロスプロセッサを使用するオーディオ符号器及び復号器
Document Type and Number:
Japanese Patent JP7135132
Kind Code:
B2
Abstract:
An audio encoder for encoding an audio signal, comprises: a first encoding processor (600) for encoding a first audio signal portion in a frequency domain, wherein the first encoding processor (600) comprises: a time frequency converter for converting the first audio signal portion into a frequency domain representation having spectral lines up to a maximum frequency of the first audio signal portion; a spectral encoder for encoding the frequency domain representation; a second encoding processor for encoding a second different audio signal portion in the time domain; a cross-processor (700) for calculating, from the encoded spectral representation of the first audio signal portion, initialization data of the second encoding processor (610), so that the second encoding processing (610) is initialized to encode the second audio signal portion immediately following the first audio signal portion in time in the audio signal; a controller configured for analyzing the audio signal and for determining, which portion of the audio signal is the first audio signal portion encoded in the frequency domain and which portion of the audio signal is the second audio signal portion encoded in the time domain; and an encoded signal former for forming an encoded audio signal comprising a first encoded signal portion for the first audio signal portion and a second encoded signal portion for the second audio signal portion.
Inventors:
Dish, Sasha
Dietz, Martin
Martorus, Marx
Huhas, Guillaume
Raveri, Emmanuel
Neusinger, Matthias
Schnell, Marx
Schubert, Benjamin
Grill, Bernhard
Dietz, Martin
Martorus, Marx
Huhas, Guillaume
Raveri, Emmanuel
Neusinger, Matthias
Schnell, Marx
Schubert, Benjamin
Grill, Bernhard
Application Number:
JP2021019424A
Publication Date:
September 12, 2022
Filing Date:
February 10, 2021
Export Citation:
Assignee:
Fraunhofer-Gesellschaft Tool Felderung del Angewanten Forsung Eingetler Genel Fehlein
International Classes:
G10L19/00; G10L19/02; G10L19/16; G10L21/0388
Domestic Patent References:
| JP2010210680A | ||||
| JP2012242785A |
Foreign References:
| US20130030798 |
Attorney, Agent or Firm:
Daisuke Noguchi
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