In an reduction of comb filter artifacts in multi-channel downmix with adaptive phase alignment
    1.
    发明公开
    In an reduction of comb filter artifacts in multi-channel downmix with adaptive phase alignment 审中-公开
    在einem Mehrkanal-Downmix中的呕吐von Kammfilterartefakten

    公开(公告)号:EP2838086A1

    公开(公告)日:2015-02-18

    申请号:EP13189287.9

    申请日:2013-10-18

    IPC分类号: G10L19/008

    摘要: An audio signal processing decoder having at least one frequency band (36) and being configured for processing an input audio signal (37) having a plurality of input channels (38) in the at least one frequency band (36), wherein the decoder (2) is configured
    to analyze the input audio signal (37), wherein inter-channel dependencies (39) between the input channels (38) are identified; and
    to align the phases of the input channels (38) based on the identified inter-channel dependencies (39), wherein the phases of input channels (38) are the more aligned with respect to each other the higher their inter-channel dependency (39) is; and
    to downmix the aligned input audio signal to an output audio signal (40) having a lesser number of output channels (41) than the number of the input channels (38).

    摘要翻译: 一种音频信号处理解码器,具有至少一个频带(36)并且被配置用于处理在所述至少一个频带(36)中具有多个输入声道(38)的输入音频信号(37),其中所述解码器 2)被配置为分析输入音频信号(37),其中识别输入通道(38)之间的通道间相关性(39) 并且基于所识别的信道间相关性(39)来调整输入信道(38)的相位,其中,输入信道(38)的相位彼此之间更一致,信道间相关性越高 39)是 并且将对准的输入音频信号降混到具有比输入通道(38)的数量少的输出通道(41)的输出音频信号(40)。

    APPARATUS AND METHOD FOR SCREEN RELATED AUDIO OBJECT REMAPPING
    2.
    发明公开
    APPARATUS AND METHOD FOR SCREEN RELATED AUDIO OBJECT REMAPPING 审中-公开
    VORRICHTUNG UND VERFAHRENFÜRBILDSCHIRMBEZOGENE AUDIOOBJEKT-NEUABBILDUNG

    公开(公告)号:EP2928216A1

    公开(公告)日:2015-10-07

    申请号:EP14196769.5

    申请日:2014-12-08

    IPC分类号: H04S7/00 H04S3/00

    摘要: An apparatus for generating loudspeaker signals is provided. The apparatus comprises an object metadata processor (110) and an object renderer (120). The object renderer (120) is configured to receive an audio object. The object metadata processor (110) is configured to receive metadata, comprising an indication on whether the audio object is screen-related, and further comprising a first position of the audio object. The object metadata processor (110) is configured to calculate a second position of the audio object depending on the first position of the audio object and depending on a size of a screen, if the audio object is indicated in the metadata as being screen-related. The object renderer (120) is configured to generate the loudspeaker signals depending on the audio object and depending on position information. The object metadata processor (110) is configured to feed the first position of the audio object as the position information into the object renderer (120), if the audio object is indicated in the metadata as being not screen-related. The object metadata processor (110) is configured to feed the second position of the audio object as the position information into the object renderer (120), if the audio object is indicated in the metadata as being screen-related.

    摘要翻译: 提供一种用于产生扬声器信号的装置。 该装置包括对象元数据处理器(110)和对象渲染器(120)。 对象渲染器(120)被配置为接收音频对象。 对象元数据处理器(110)被配置为接收元数据,其包括关于音频对象是否是屏幕相关的指示,还包括音频对象的第一位置。 对象元数据处理器(110)被配置为根据音频对象的第一位置并根据屏幕的大小来计算音频对象的第二位置,如果音频对象在元数据中被指示为屏幕相关 。 对象渲染器(120)被配置为根据音频对象并根据位置信息产生扬声器信号。 如果音频对象在元数据中被指示为不与屏幕相关,则对象元数据处理器(110)被配置为将音频对象的第一位置作为位置信息馈送到对象渲染器(120)。 如果音频对象在元数据中被指示为与屏幕相关的话,对象元数据处理器(110)被配置为将音频对象的第二位置作为位置信息馈送到对象渲染器(120)。

    Concept for audio encoding and decoding for audio channels and audio objects
    3.
    发明公开
    Concept for audio encoding and decoding for audio channels and audio objects 审中-公开
    Konzept zur Audiocodierung und AudiodecodierungfürAudiokanäleund Audioobjekte

    公开(公告)号:EP2830045A1

    公开(公告)日:2015-01-28

    申请号:EP13177378.0

    申请日:2013-07-22

    IPC分类号: G10L19/008

    摘要: Audio encoder for encoding audio input data (101) to obtain audio output data (501) comprises an input interface (100) for receiving a plurality of audio channels, a plurality of audio objects and metadata related to one or more of the plurality of audio objects; a mixer (200) for mixing the plurality of objects and the plurality of channels to obtain a plurality of pre-mixed channels, each pre-mixed channel comprising audio data of a channel and audio data of at least one object; a core encoder (300) for core encoding core encoder input data; and a metadata compressor (400) for compressing the metadata related to the one or more of the plurality of audio objects, wherein the audio encoder is configured to operate in at least one mode of the group of two modes comprising a first mode, in which the core encoder is configured to encode the plurality of audio channels and the plurality of audio objects received by the input interface as core encoder input data, and a second mode, in which the core encoder (300) is configured for receiving, as the core encoder input data, the plurality of pre-mixed channels generated by the mixer (200).

    摘要翻译: 用于编码音频输入数据(101)以获得音频输出数据(501)的音频编码器包括用于接收多个音频通道的输入接口(100),与多个音频中的一个或多个音频相关的多个音频对象和元数据 对象; 混合器(200),用于混合多个对象和多个通道以获得多个预混合通道,每个预混合通道包括通道的音频数据和至少一个对象的音频数据; 核心编码器(300),用于核心编码核心编码器输入数据; 以及用于压缩与所述多个音频对象中的一个或多个音频对象有关的元数据的元数据压缩器(400),其中所述音频编码器被配置为在包括第一模式的两种模式的组的至少一种模式中操作,其中 核心编码器被配置为将由输入接口接收的多个音频频道和多个音频对象编码为核心编码器输入数据,以及第二模式,其中核心编码器(300)被配置为接收作为核心 编码器输入数据,由混合器(200)产生的多个预混频道。

    Method for Processing an Audio Signal in accordance with a Room Impulse Response, Signal Processing Unit, Audio Encoder, Audio Decoder, and Binaural Renderer
    5.
    发明公开
    Method for Processing an Audio Signal in accordance with a Room Impulse Response, Signal Processing Unit, Audio Encoder, Audio Decoder, and Binaural Renderer 审中-公开
    一种用于按照房间脉冲响应,信号处理单元,音频编码器,音频解码器和双耳渲染器处理音频信号的方法

    公开(公告)号:EP2830043A2

    公开(公告)日:2015-01-28

    申请号:EP13189230.9

    申请日:2013-10-18

    IPC分类号: G10K15/08 H04S7/00

    摘要: A method for processing an audio signal (400) in accordance with a room impulse response (434) is described. The audio signal (400) is separately processed (422, 424) with an early part and a late reverberation of the room impulse response (434), and the processed early part (428) of the audio signal and the reverberated signal (430) are combined (432). A transition from the early part to the late reverberation in the room impulse response is reached when a correlation measure reaches a threshold, the threshold being set dependent on the correlation measure for a selected one of the early reflections in the early part of the room impulse response.

    摘要翻译: 描述了一种用于在具有房间脉冲响应(434)雅舞蹈音频信号(400)的处理方法。 所述音频信号(400)被分开处理(422,424),在早期部分和房间脉冲响应(434)的后部混响,和音频信号的处理的早期部分(428)和混响信号(430) 合并(432)。 达到从早期部分在房间脉冲响应的混响后期的过渡当一个相关度达到阈值,该阈值被设置依赖于在室内脉冲的早期部分的早期反射的所选择的一个的相关度 响应。