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    • 1. 发明申请
    • APPARATUS AND METHOD FOR MDCT M/S STEREO WITH GLOBAL ILD WITH IMPROVED MID/SIDE DECISION
    • 具有全球ILD并具有改进的MID / SIDE决策的MDCT M / S立体声的装置和方法
    • WO2017125544A1
    • 2017-07-27
    • PCT/EP2017/051177
    • 2017-01-20
    • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
    • RAVELLI, EmmanuelSCHNELL, MarkusDÖHLA, StefanJÄGERS, WolfgangDIETZ, MartinHELMRICH, ChristianMARKOVIC, GoranFOTOPOULOU, EleniMULTRUS, MarkusBAYER, StefanFUCHS, GuillaumeHERRE, Jürgen
    • G10L19/008G10L19/22G10L19/02
    • G10L19/008G10L19/0204G10L19/0212G10L19/22
    • Fig. illustrates an apparatus for encoding a first channel and a second channel of an audio input signal comprising two or more channels to obtain an encoded audio signal according to an embodiment. The apparatus comprises a normalizer (110) configured to determine a normalization value for the audio input signal depending on the first channel of the audio input signal and depending on the second channel of the audio input signal, wherein the normalizer (110) is configured to determine a first channel and a second channel of a normalized audio signal by modifying, depending on the normalization value, at least one of the first channel and the second channel of the audio input signal. Moreover, the apparatus comprises an encoding unit (120) being configured to generate a processed audio signal having a first channel and a second channel, such that one or more spectral bands of the first channel of the processed audio signal are one or more spectral bands of the first channel of the normalized audio signal, such that one or more spectral bands of the second channel of the processed audio signal are one or more spectral bands of the second channel of the normalized audio signal, such that at least one spectral band of the first channel of the processed audio signal is a spectral band of a mid signal depending on a spectral band of the first channel of the normalized audio signal and depending on a spectral band of the second channel of the normalized audio signal, and such that at least one spectral band of the second channel of the processed audio signal is a spectral band of a side signal depending on a spectral band of the first channel of the normalized audio signal and depending on a spectral band of the second channel of the normalized audio signal. The encoding unit (120) is configured to encode the processed audio signal to obtain the encoded audio signal.
    • 图。 示出了根据实施例的用于编码包括两个或更多个声道的音频输入信号的第一声道和第二声道以获得编码的音频信号的设备。 该装置包括:归一化器(110),被配置为根据音频输入信号的第一声道并且取决于音频输入信号的第二声道来确定音频输入信号的归一化值,其中归一化器(110)被配置为 通过根据归一化值修改音频输入信号的第一声道和第二声道中的至少一个来确定归一化音频信号的第一声道和第二声道。 此外,该设备包括:编码单元(120),被配置为生成具有第一信道和第二信道的经处理的音频信号,使得经处理的音频信号的第一信道的一个或多个频谱带是一个或多个频谱带 ,使得经处理的音频信号的第二声道的一个或多个频谱带是归一化的音频信号的第二声道的一个或多个频谱带,使得至少一个频谱带 经处理的音频信号的第一声道是取决于归一化音频信号的第一声道的光谱带并取决于归一化音频信号的第二声道的光谱带的中间信号的光谱带,并且使得在 处理后的音频信号的第二声道的至少一个频谱带是取决于归一化音频信号的第一声道的频带的旁侧信号的频谱带 并且取决于归一化音频信号的第二声道的频谱带。 编码单元(120)被配置为编码处理后的音频信号以获得编码的音频信号。