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1. MX350690 - MÉTODO Y DESCODIFICADOR PARA UN CONCEPTO PARAMÉTRICO DE CODIFICACIÓN DE OBJETO DE AUDIO ESPACIAL GENERALIZADO PARA CASOS DE MEZCLA DESCENDENTE/MEZCLA ASCENDENTE DE MULTICANAL.

Office
Mexico
Application Number 2015001396
Application Date 29.01.2015
Publication Number 350690
Publication Date 11.05.2015
Grant Number 350690
Grant Date 13.09.2017
Publication Kind B
IPC
G10L 19/008
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
CPC
G10L 19/008
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
G10L 19/02
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
02using spectral analysis, e.g. transform vocoders or subband vocoders
H04S 1/007
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
1Two-channel systems
007in which the audio signals are in digital form
H04S 3/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
3Systems employing more than two channels, e.g. quadraphonic
02of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
H04S 5/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
5Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
02of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals
G10L 13/07
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
13Speech synthesis; Text to speech systems
06Elementary speech units used in speech synthesisers; Concatenation rules
07Concatenation rules
Applicants FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Inventors HERRE, Jürgen
HELLMUTH, Oliver
KASTNER, Thorsten
TERENTIV, Leon
Priority Data 61/679,404 03.08.2012 US
Title
(EN) MÉTODO Y DESCODIFICADOR PARA UN CONCEPTO PARAMÉTRICO DE CODIFICACIÓN DE OBJETO DE AUDIO ESPACIAL GENERALIZADO PARA CASOS DE MEZCLA DESCENDENTE/MEZCLA ASCENDENTE DE MULTICANAL.
(ES) MÉTODO Y DESCODIFICADOR PARA UN CONCEPTO PARAMÉTRICO DE CODIFICACIÓN DE OBJETO DE AUDIO ESPACIAL GENERALIZADO PARA CASOS DE MEZCLA DESCENDENTE/MEZCLA ASCENDENTE DE MULTICANAL.
Abstract
(EN) A decoder for generating an audio output signal comprising one or more audio output channels from a downmix signal comprising one or more downmix channels is provided. The downmix signal encodes one or more audio object signals. The decoder comprises a threshold determiner (110) for determining a threshold value depending on a signal energy and/or a noise energy of at least one of the of or more audio object signals and/or depending on a signal energy and/or a noise energy of at least one of the one or more downmix channels. Moreover, the decoder comprises a processing unit (120) for generating the one or more audio output channels from the one or more downmix channels depending on the threshold value.
(ES) Se describe un generador para generar una señal de salida de audio que comprende uno o más canales de salida de audio de una señal de mezcla descendente que comprende uno o más canales de mezcla descendente. La señal de mezcla descendente codifica una o más señales de objeto de audio. El descodificador comprende un determinador de umbral (110) para determinar un valor de umbral dependiendo de la energía de señal y/o energía de ruido de por lo menos una de las señales de objeto de audio y/o dependiendo de la energía de señal y/o energía de ruido de por lo menos uno de los canales de mezcla descendente. Además, el descodificador comprende una unidad de procesamiento (120) para generar el uno o más canales de salida de audio del uno o más canales de mezcla descendente, dependiendo del valor de umbral.