Scalable stereo audio coding/decoding method and apparatus
    62.
    发明授权
    Scalable stereo audio coding/decoding method and apparatus 有权
    可扩展的立体声音频编码/解码方法和装置

    公开(公告)号:US07835915B2

    公开(公告)日:2010-11-16

    申请号:US10737957

    申请日:2003-12-18

    IPC分类号: G10L19/00 G10L21/00

    CPC分类号: G10L19/24 G10L19/008

    摘要: Scalable stereo audio coding and decoding method and apparatus are provided. The scalable stereo audio coding method includes transforming a first channel and a second channel audio samples; quantizing the transformed first channel and a second channel audio samples; and coding the quantized first channel audio samples up to a predetermined transition layer and then interleavingly coding the quantized first and second channel audio samples with increasing a layer index from a layer succeeding the transition layer, until coding for a predetermined plurality of layers is finished.

    摘要翻译: 提供了可伸缩的立体声音频编码和解码方法和装置。 可扩展立体声音频编码方法包括:变换第一频道和第二频道音频样本; 量化变换的第一频道和第二频道音频样本; 以及将量化的第一通道音频样本编码到预定的过渡层,然后通过从过渡层之后的层增加层索引来交织编码量化的第一和第二声道音频样本,直到完成预定多个层的编码。

    Method for manufacturing xylitol with high-yield and high-productivity
    63.
    发明授权
    Method for manufacturing xylitol with high-yield and high-productivity 有权
    木糖醇生产率高,生产率高的方法

    公开(公告)号:US07745177B2

    公开(公告)日:2010-06-29

    申请号:US11677685

    申请日:2007-02-22

    CPC分类号: C12P7/18

    摘要: The present invention provides a method for manufacturing xylitol with high-yield and high-productivity by using a xylitol dehydrogenase-deficient mutant of xylitol producing microorganism. This goal is achieved through modification of the metabolic pathway of the xylitol producing microorganism, preferably a natural xylose-assimilating yeasts and fungi, by disrupting or inactivating the expression of desired genes.

    摘要翻译: 本发明提供了通过使用木糖醇生产微生物的木糖醇脱氢酶缺陷型突变体以高产率和高生产率制备木糖醇的方法。 通过破坏或失活所需基因的表达,通过修饰木糖醇生产微生物,优选天然木糖同化的酵母和真菌的代谢途径来实现这一目标。

    AUDIO SIGNAL QUALITY ENHANCEMENT APPARATUS AND METHOD
    64.
    发明申请
    AUDIO SIGNAL QUALITY ENHANCEMENT APPARATUS AND METHOD 有权
    音频信号质量增强装置和方法

    公开(公告)号:US20090306971A1

    公开(公告)日:2009-12-10

    申请号:US12479009

    申请日:2009-06-05

    IPC分类号: G10L21/00 G10L19/02

    CPC分类号: G10L21/0364

    摘要: An audio signal quality enhancement apparatus and method. The apparatus includes a pitch calculating unit to extract a pitch period of an audio signal, a frequency domain transforming unit to transform the audio signal to a frequency domain, a frequency band dividing unit to classify the transformed audio signal into audio signals for each of the plurality of frequency bands based on the extracted pitch period, and a pitch enhancement unit to determine a gain based on a volume of the transformed audio signal, and to generate an output signal by multiplying each of the classified audio signals with respect to each of the plurality of frequency bands by the gain, thereby enhancing quality of the audio signal.

    摘要翻译: 一种音频信号质量增强装置和方法。 该装置包括:音调计算单元,用于提取音频信号的音调周期;频域变换单元,用于将音频信号变换到频域;频带分割单元,用于将经变换的音频信号分类为音频信号, 基于所提取的音调周期的多个频带,以及音调增强单元,用于基于经变换的音频信号的音量来确定增益,并且通过将每个分类的音频信号相对于每个音频信号相乘来生成输出信号 通过增益获得多个频带,从而提高音频信号的质量。

    APPARATUS AND METHOD OF ENCODING AND DECODING SIGNALS
    65.
    发明申请
    APPARATUS AND METHOD OF ENCODING AND DECODING SIGNALS 有权
    编码和解码信号的装置和方法

    公开(公告)号:US20090210234A1

    公开(公告)日:2009-08-20

    申请号:US12246570

    申请日:2008-10-07

    IPC分类号: G10L19/00

    摘要: A method of encoding an audio signal, where signals including two or more channel signals are downmixed to a mono signal, the mono signal is divided into a low-frequency signal and a high-frequency signal, the low-frequency signal is encoded through algebraic code excited linear prediction (ACELP) or transform coded excitation (TCX), and the high-frequency signal is encoded using the low-frequency signal. A method of decoding of an audio signal, a low-frequency signal encoded through ACELP or TCX is decoded, a high-frequency signal is decoded using the low-frequency signal, the low-frequency signal and the high-frequency signal are combined to generate a mono signal, and the mono signal is upmixed by decoding spatial parameters regarding signals including two or more channel signals.

    摘要翻译: 一种编码音频信号的方法,其中包括两个或更多个信道信号的信号被下混合到单声道信号,单声道信号被分为低频信号和高频信号,低频信号通过代数 代码激励线性预测(ACELP)或变换编码激励(TCX),并且使用低频信号对高频信号进行编码。 解码音频信号的方法,通过ACELP或TCX编码的低频信号进行解码,使用低频信号对低频信号进行解码,将低频信号和高频信号合成为 产生单声道信号,并且单声道信号通过解码关于包括两个或更多个声道信号的信号的空间参数来混合。

    Apparatus and method of wideband decoding to synthesize a decoded excitation signal with a generated high frequency band signal
    66.
    发明授权
    Apparatus and method of wideband decoding to synthesize a decoded excitation signal with a generated high frequency band signal 失效
    宽带解码的装置和方法,用于产生高频带信号来合成解码的激励信号

    公开(公告)号:US07498959B2

    公开(公告)日:2009-03-03

    申请号:US11766322

    申请日:2007-06-21

    IPC分类号: H03M7/12

    CPC分类号: G10L19/0208 G10L21/038

    摘要: Encoding and/or decoding a wideband signal produces high frequency band spectra from low frequency band spectral information. Linear prediction filter coefficients are determined for the entire wideband spectrum of an input signal. An energy value in each of a plurality of sub-bands in the high frequency band is determined and encoded. The short-term correlation removed input signal is then down-sampled to form a low frequency band signal. At a decoder, the high frequency band signal is generated using the encoded low frequency band signal. The energy in each sub-band of the high frequency band is adjusted using the encoded energy value. Thus, the spectral envelope for the entire wideband signal is synthesized and decoded using linear predictive synthesis.

    摘要翻译: 编码和/或解码宽带信号从低频带频谱信息产生高频带频谱。 对于输入信号的整个宽带谱确定线性预测滤波器系数。 确定并编码高频带中的多个子带中的每一个中的能量值。 然后将短期相关去除输入信号进行下采样以形成低频带信号。 在解码器处,使用编码的低频带信号产生高频带信号。 使用编码的能量值来调整高频带的每个子带中的能量。 因此,使用线性预测合成来合成和解码整个宽带信号的频谱包络。

    TRANSCODING METHOD AND APPARATUS
    67.
    发明申请
    TRANSCODING METHOD AND APPARATUS 审中-公开
    TRANSCODING方法和装置

    公开(公告)号:US20090037180A1

    公开(公告)日:2009-02-05

    申请号:US11947016

    申请日:2007-11-29

    IPC分类号: G10L19/00

    CPC分类号: G10L19/0204 G10L19/173

    摘要: Provided is a method and apparatus for encoding a bitstream, which was encoded by a predetermined method, in another method. By adaptively encoding a bitstream encoded by a predetermined method by selecting a domain in which the encoding is performed for each predetermined band, the bitstream can be efficiently encoded and transmitted and received, and compatibility can be provided.

    摘要翻译: 提供了一种用于通过另一种方法对通过预定方法编码的比特流进行编码的方法和装置。 通过对通过选择对每个预定频带执行编码的域来自适应地编码由预定方法编码的比特流,可以有效地编码和发送和接收比特流,并且可以提供兼容性。

    AUDIO SIGNAL ENCODING/DECODING METHOD AND APPARATUS
    68.
    发明申请
    AUDIO SIGNAL ENCODING/DECODING METHOD AND APPARATUS 失效
    音频信号编码/解码方法和装置

    公开(公告)号:US20080312912A1

    公开(公告)日:2008-12-18

    申请号:US11867218

    申请日:2007-10-04

    IPC分类号: G10L19/02

    摘要: Provided is an audio signal encoding method including transforming an input signal from a time domain to a time/frequency domain using a first transformation method, extracting a stereo parameter from a signal of the time/frequency domain, encoding the stereo parameter, and down-mixing the signal of the time/frequency domain, transforming each of sub-bands of the down-mixed signal to a frequency domain by using a second transformation method, and encoding the signal of the frequency domain in the frequency domain.

    摘要翻译: 提供了一种音频信号编码方法,包括使用第一变换方法将输入信号从时域变换为时域/频域,从时域/频域的信号中提取立体声参数,对立体声参数进行编码, 混合时间/频域的信号,通过使用第二变换方法将下混合信号的每个子频带变换为频域,并对频域中的频域的信号进行编码。

    METHOD AND APPARATUS TO ENCODE AND DECODE AN AUDIO SIGNAL
    69.
    发明申请
    METHOD AND APPARATUS TO ENCODE AND DECODE AN AUDIO SIGNAL 审中-公开
    编码和解码音频信号的方法和设备

    公开(公告)号:US20080281604A1

    公开(公告)日:2008-11-13

    申请号:US11956690

    申请日:2007-12-14

    IPC分类号: G10L19/00

    摘要: A method and apparatus to encode and decode an audio signal. In the encoding method and apparatus, one or more important frequency components may be detected from an audio signal, the frequency components may be encoded, and then an envelope of the audio signal may be encoded. In the decoding method and apparatus, an audio signal may be decoded by adjusting envelopes at one or more bands containing one or more important frequency components in consideration of the energy values of the frequency components. Accordingly, it is possible to maximize the coding efficiency without degrading the sound quality of the audio signal even if the audio signal is encoded or decoded using a small amount of bits.

    摘要翻译: 一种对音频信号进行编码和解码的方法和装置。 在编码方法和装置中,可以从音频信号检测一个或多个重要的频率分量,可以对频率分量进行编码,然后对音频信号的包络进行编码。 在解码方法和装置中,考虑到频率分量的能量值,可以通过调整包含一个或多个重要频率分量的一个或多个频带的信封来解码音频信号。 因此,即使音频信号使用少量的比特进行编码或解码,也可以使编码效率最大化而不降低音频信号的声音质量。

    Method, medium, and apparatus encoding and/or decoding multichannel audio signals
    70.
    发明申请
    Method, medium, and apparatus encoding and/or decoding multichannel audio signals 有权
    方法,介质和装置编码和/或解码多声道音频信号

    公开(公告)号:US20080097766A1

    公开(公告)日:2008-04-24

    申请号:US11907398

    申请日:2007-10-11

    IPC分类号: G10L19/00

    CPC分类号: G10L19/008 G10L19/00

    摘要: A method, medium, and apparatus encoding and/or decoding a multichannel audio signal. The method includes detecting the type of spatial extension data included in an encoding result of an audio signal, if the spatial extension data is data indicating a core audio object type related to a technique of encoding core audio data, detecting the core audio object type; decoding core audio data by using a decoding technique according to the detected core audio object type, if the spatial extension data is residual coding data, decoding the residual coding data by using the decoding technique according to the core audio object type, and up-mixing the decoded core audio data by using the decoded residual coding data. According to the method, the core audio data and residual coding data may be decoded by using an identical decoding technique, thereby reducing complexity at the decoding end.

    摘要翻译: 一种编码和/或解码多声道音频信号的方法,介质和装置。 该方法包括:如果空间扩展数据是指示与核心音频数据的编码技术相关的核心音频对象类型的数据,检测核心音频对象类型,则检测包括在音频信号的编码结果中的空间扩展数据的类型; 通过使用根据所检测的核心音频对象类型的解码技术对核心音频数据进行解码,如果空间扩展数据是残差编码数据,则使用根据核心音频对象类型的解码技术对残差编码数据进行解码,以及上调 通过使用解码的残留编码数据来解码核心音频数据。 根据该方法,可以通过使用相同的解码技术来解码核心音频数据和残留编码数据,从而降低解码端的复杂度。