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    • 4. 发明专利
    • Multisignal audio coding using signal whitening as preprocessing
    • AU2022235537A1
    • 2022-10-13
    • AU2022235537
    • 2022-09-20
    • FRAUNHOFER GES FORSCHUNG
    • FOTOPOULOU ELENIMULTRUS MARKUSDICK SASCHAMARKOVIC GORANMABEN PALLAVIKORSE SRIKANTHBAYER STEFANDISCH SASCHAHERRE JÜRGEN
    • G10L19/008G10L19/03
    • Abstract A multisignal encoder for encoding at least three audio signals, comprises: a signal preproces sor (100) for individually preprocessing each audio signal to obtain at least three preprocessed audio signals, wherein the preprocessing is performed so that a preprocessed audio signal is whitened with respect to the signal before preprocessing; an adaptive joint signal processor (200) for performing a processing of the at least three preprocessed audio signals to obtain at least three jointly processed signals or at least two jointly processed signals and an unpro cessed signal; a signal encoder (300) for encoding each signal to obtain one or more encoded signals; and an output interface (400) for transmitting or storing an encoded multisignal audio signal comprising the one or more encoded signals, side information relating to the prepro cessing and side information relating to the processing. Fig. 5a 100 180 200 joint processing signal - adaptive joint side information preprocessor o signal processor (whitening) J . (e.g. also IGF) bit distribution signal encoder information 520- 300- (e.g. rate loop processor) preprocessing side information output interface encoded 400i multi-signal audio signal Fig. 5a joint processing side information, 510 520 532 534 536 individually preprocessing pairwise energy bit ••• encoded side processing scaling distribution .•• signals information side information information information - TNS info e channel pair side info bits - FDNS info e full M/S or dual mono or - LTP info band-wise M/S and M/S mask - window info e IGF data Fig. 5b
    • 6. 发明专利
    • AN AUDIO PROCESSOR AND A METHOD CONSIDERING ACOUSTIC OBSTACLES AND PROVIDING LOUDSPEAKER SIGNALS
    • ZA202101553B
    • 2022-07-27
    • ZA202101553
    • 2021-03-08
    • FRAUNHOFER GES FORSCHUNG
    • WALTHER ANDREASHERRE JÜRGENKLAPP JULIANFALLER CHRISTOFSCHMIDT MARKUS
    • An audio processor for providing a plurality of loudspeaker signals, or loudspeaker feeds, on the basis of a plurality of input signals, like channeled signals and/or object signals. The audio processor is configured to obtain an information about the position of a listener. The audio processor is further configured to obtain an information about the position of a plurality of loudspeakers, or sound transducers, which may be placed within the same containment, e.g. a soundbar. The audio processor is further configured to dynamically adapt an allocation of objects and/or channel objects and/or adapted signals, like adapted channel signals, derived from the input signals, like channel signals or channel objects, or like upmixed or downmixed signals, to loudspeakers. The adaptation of the location depends on the information about the position of the listener and on the information about the positions of the loudspeakers. In other words, the audio processor decides which loudspeakers should be used in the rendering of the different channel objects or adapted signals. The audio signal processor is further configured to render the objects and/or the channel objects and/or the adapted signals derived from the input signals, in dependence on the information about the position of the listener, on the information about positions of the loudspeakers and in dependence on the allocation, in order to obtain the loudspeaker signals, such that a rendered sound follows a listener.
    • 7. 发明专利
    • AN AUDIO PROCESSOR AND A METHOD FOR PROVIDING LOUDSPEAKER SIGNALS
    • ZA202101551B
    • 2022-07-27
    • ZA202101551
    • 2021-03-08
    • FRAUNHOFER GES FORSCHUNG
    • WALTHER ANDREASHERRE JÜRGENKLAPP JULIANFALLER CHRISTOFSCHMIDT MARKUS
    • An audio processor for providing a plurality of loudspeaker signals, or loudspeaker feeds, on the basis of a plurality of input signals, like channeled signals and/or object signals. The audio processor is configured to obtain an information about the position of a listener. The audio processor is further configured to obtain an information about the position of a plurality of loudspeakers, or sound transducers, which may be placed within the same containment, e.g. a soundbar. The audio processor is further configured to dynamically adapt an allocation of objects and/or channel objects and/or adapted signals, like adapted channel signals, derived from the input signals, like channel signals or channel objects, or like upmixed or downmixed signals, to loudspeakers. The adaptation of the location depends on the information about the position of the listener and on the information about the positions of the loudspeakers. In other words, the audio processor decides which loudspeakers should be used in the rendering of the different channel objects or adapted signals. The audio signal processor is further configured to render the objects and/or the channel objects and/or the adapted signals derived from the input signals, in dependence on the information about the position of the listener, on the information about positions of the loudspeakers and in dependence on the allocation, in order to obtain the loudspeaker signals, such that a rendered sound follows a listener.
    • 9. 发明专利
    • Concepto para codificación y decodificación de audio para canales de audio y objetos de audio
    • ES2913849T3
    • 2022-06-06
    • ES14739196
    • 2014-07-16
    • FRAUNHOFER GES FORSCHUNG
    • ADAMI ALEXANDERBORSS CHRISTIANDICK SASCHAERTEL CHRISTIANFÜG SIMONEHERRE JÜRGENHILPERT JOHANNESHÖLZER ANDREASKRATSCHMER MICHAELKÜCH FABIANKUNTZ ACHIMMURTAZA ADRIANPLOGSTIES JANSILZLE ANDREASSTENZEL HANNE
    • G10L19/008G10L19/18G10L19/20G10L19/22H04S3/00
    • Codificador de audio para codificar datos de entrada de audio (101) para obtener datos de salida de audio (501) que comprende: una interfaz de entrada (100) configurada para recibir una pluralidad de canales de audio, una pluralidad de objetos de audio y metadatos relacionados con uno o más de la pluralidad de objetos de audio; un mezclador (200) configurado para mezclar la pluralidad de objetos de audio y la pluralidad de canales de audio para obtener una pluralidad de canales mezclados previamente, comprendiendo cada canal mezclado previamente datos de audio de un canal de audio y datos de audio de por lo menos un objeto de audio; un codificador central (300) configurado para codificar de forma central datos de entrada del codificador central; y un compresor de metadatos (400) configurado para comprimir los metadatos relacionados con uno o más de la pluralidad de objetos de audio para obtener metadatos comprimidos; y en el que el codificador de audio se configura para operar en tanto un primer modo como un segundo modo de un grupo de por lo menos dos modos que comprende el primer modo, en el cual el codificador central (300) se configura para codificar de manera individual la pluralidad de canales de audio y la pluralidad de objetos de audio recibidos por la interfaz de entrada (100) como los datos de entrada del codificador central sin ninguna interacción por parte del mezclador (200), y el segundo modo, en el cual el codificador central (300) se configura para recibir, como los datos de entrada del codificador central, la pluralidad de canales mezclados previamente generados por el mezclador (200) y para codificar la pluralidad de canales previamente mezclados generados por el mezclador (200), y una interfaz de salida (500) para proporcionar una señal de salida como los datos de salida de audio (501), comprendiendo la señal de salida, cuando el codificador de audio opera en el primer modo, canales de audio codificados en el primer modo, canales de audio codificados y objetos de audio codificados como una salida del codificador central (300) y los metadatos comprimidos, y comprendiendo la señal de salida, cuando el codificador de audio opera en el segundo modo, la salida del codificador central (300) sin ningún metadato relacionado con la una o más de la pluralidad de objetos de audio.