Title:
ノイズ充填装置、ノイズ充填パラメータ演算装置、ノイズ充填パラメータを提供する方法、オーディオ信号のノイズ充填されたスペクトル表現を提供する方法、それに対応するコンピュータプログラムおよび符号化されたオーディオ信号
Document Type and Number:
Japanese Patent JP5307889
Kind Code:
B2
Abstract:
An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal comprises a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also comprises an audio stream provider configured to provide the audio stream such that the audio stream comprises an information describing an audio content of the frequency bands and an information describing the multi-band quantization error.A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal comprises a noise filler configured to introduce noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.
More Like This:
| WO/2021/255328 | DECODER SPATIAL COMFORT NOISE GENERATION FOR DISCONTINUOUS TRANSMISSION OPERATION |
| WO/2006/018748 | SCALABLE AUDIO CODING |
| WO/2014/118175 | NOISE FILLING CONCEPT |
Inventors:
Letterbach Nicolaus
Grill bernhard
Fuchs Guillaume
Gayers bear ger stephan
Martrus Marx
Pop halald
Helle Jürgen
Vavnick Stephan
Schuler Gerald
Hirschfeld Jens
Grill bernhard
Fuchs Guillaume
Gayers bear ger stephan
Martrus Marx
Pop halald
Helle Jürgen
Vavnick Stephan
Schuler Gerald
Hirschfeld Jens
Application Number:
JP2011516997A
Publication Date:
October 02, 2013
Filing Date:
June 26, 2009
Export Citation:
Assignee:
Fraunhofer-Gesellschaftsza Felderung der Angewanten Vorschung A. Fao
International Classes:
G10L19/028; G10L19/00; G10L19/012; G10L19/20
Domestic Patent References:
| JP200453891A | ||||
| JP2005530205A | ||||
| JP2007240819A |
Attorney, Agent or Firm:
Masahiro Okada