AUDIO-ENCODING METHOD AND APPARATUS, AUDIO-DECODING METHOD AND APPARATUS, RECODING MEDIUM THEREOF, AND MULTIMEDIA DEVICE EMPLOYING SAME
    1.
    发明申请
    AUDIO-ENCODING METHOD AND APPARATUS, AUDIO-DECODING METHOD AND APPARATUS, RECODING MEDIUM THEREOF, AND MULTIMEDIA DEVICE EMPLOYING SAME 有权
    音频编码方法和装置,音频解码方法和装置,其中介及其使用的多媒体装置

    公开(公告)号:US20140156284A1

    公开(公告)日:2014-06-05

    申请号:US14123359

    申请日:2012-06-01

    IPC分类号: G10L19/008

    摘要: Provided is an audio encoding method. The audio encoding method includes: acquiring envelopes based on a predetermined sub-band for an audio spectrum; quantizing the envelopes based on the predetermined sub-band; and obtaining a difference value between quantized envelopes for adjacent sub-bands and lossless encoding a difference value of a current sub-band by using a difference value of a previous sub-band as a context. Accordingly, the number of bits required to encode envelope information of an audio spectrum may be reduced in a limited bit range, thereby increasing the number of bits required to encode an actual spectral component.

    摘要翻译: 提供了一种音频编码方法。 音频编码方法包括:基于用于音频频谱的预定子带获取信封; 基于预定的子带量化信封; 并且通过使用前一子带的差值作为上下文,获得相邻子带的量化包络之间的差值,并对当前子带的差值进行无损编码。 因此,编码音频频谱的包络信息所需的比特数可以在有限的比特范围内减少,由此增加编码实际频谱分量所需的比特数。

    Audio-encoding method and apparatus, audio-decoding method and apparatus, recoding medium thereof, and multimedia device employing same
    2.
    发明授权
    Audio-encoding method and apparatus, audio-decoding method and apparatus, recoding medium thereof, and multimedia device employing same 有权
    音频编码方法和装置,音频解码方法和装置,其编码介质以及使用它的多媒体装置

    公开(公告)号:US09361895B2

    公开(公告)日:2016-06-07

    申请号:US14123359

    申请日:2012-06-01

    摘要: Provided is an audio encoding method. The audio encoding method includes: acquiring envelopes based on a predetermined sub-band for an audio spectrum; quantizing the envelopes based on the predetermined sub-band; and obtaining a difference value between quantized envelopes for adjacent sub-bands and lossless encoding a difference value of a current sub-band by using a difference value of a previous sub-band as a context. Accordingly, the number of bits required to encode envelope information of an audio spectrum may be reduced in a limited bit range, thereby increasing the number of bits required to encode an actual spectral component.

    摘要翻译: 提供了一种音频编码方法。 音频编码方法包括:基于用于音频频谱的预定子带获取信封; 基于预定的子带量化信封; 并且通过使用前一子带的差值作为上下文,获得相邻子带的量化包络之间的差值,并对当前子带的差值进行无损编码。 因此,编码音频频谱的包络信息所需的比特数可以在有限的比特范围内减少,由此增加编码实际频谱分量所需的比特数。

    Method, medium, and system encoding/decoding multi-channel signal
    3.
    发明授权
    Method, medium, and system encoding/decoding multi-channel signal 有权
    方法,中,系统编码/解码多通道信号

    公开(公告)号:US08861738B2

    公开(公告)日:2014-10-14

    申请号:US13563808

    申请日:2012-08-01

    摘要: A multi-channel signal decoding method is provided. A down-mixed signal representative of a multi-channel signal is decoded, and parameters representing characteristic relations between channels of the multi-channel signal are decoded. An additional parameter is estimated by using the decoded parameters, and the decoded down-mixed signal is up-mixed by using the decoded parameters and the estimated parameter so as to decode the multi-channel signal.

    摘要翻译: 提供了一种多通道信号解码方法。 解码表示多声道信号的下混信号,并对表示多声道信号的声道之间的特征关系的参数进行解码。 通过使用解码参数来估计附加参数,并且通过使用解码参数和估计参数对解码的下混合信号进行混合,以解码多声道信号。

    Apparatus and method of lossless coding and decoding
    4.
    发明授权
    Apparatus and method of lossless coding and decoding 有权
    无损编码和解码的装置和方法

    公开(公告)号:US07965206B2

    公开(公告)日:2011-06-21

    申请号:US12432811

    申请日:2009-04-30

    IPC分类号: H03M7/40

    CPC分类号: H03M7/40 H03M7/4006

    摘要: An apparatus and a method of lossless coding and decoding are provided. The apparatus to perform lossless coding may selectively perform an arithmetic coding scheme or a Huffman coding scheme with respect to a symbol. The apparatus to perform lossless coding may generate a bitstream including a first coding bit, generated according to the Huffman coding scheme. Such bitstream may include a reserved bit for the arithmetic coding scheme.

    摘要翻译: 提供了无损编码和解码的装置和方法。 执行无损编码的装置可以选择性地执行关于符号的算术编码方案或霍夫曼编码方案。 执行无损编码的装置可以生成包括根据霍夫曼编码方案生成的第一编码比特的比特流。 这样的比特流可以包括用于算术编码方案的保留位。

    Apparatus and method for lossless coding and decoding
    5.
    发明申请
    Apparatus and method for lossless coding and decoding 有权
    无损编码和解码的装置和方法

    公开(公告)号:US20100052956A1

    公开(公告)日:2010-03-04

    申请号:US12320288

    申请日:2009-01-22

    IPC分类号: H03M7/00

    CPC分类号: H03M7/40

    摘要: A lossless coding and/or decoding apparatus and method. The lossless coding apparatus may read a probability model corresponding to each of a plurality of context groups. Here, the probability model stored in a memory may be generated by grouping a context. The lossless coding apparatus may code a symbol using the probability model and generate a bitstream. The lossless coding apparatus may enhance coding efficiency and reduce an amount of space utilized by the memory.

    摘要翻译: 一种无损编码和/或解码装置和方法。 无损编码装置可以读取与多个上下文组中的每一个对应的概率模型。 这里,可以通过对上下文进行分组来生成存储在存储器中的概率模型。 无损编码装置可以使用概率模型对符号进行编码,并生成比特流。 无损编码装置可以提高编码效率并减少存储器利用的空间量。

    AUDIO SIGNAL ENCODING/DECODING METHOD AND APPARATUS
    6.
    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。

    Audio signal encoding/decoding method and apparatus
    7.
    发明授权
    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:US08032362B2

    公开(公告)日:2011-10-04

    申请号:US11867218

    申请日:2007-10-04

    IPC分类号: G10L19/00

    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。

    Apparatus and method for lossless coding and decoding
    8.
    发明授权
    Apparatus and method for lossless coding and decoding 有权
    无损编码和解码的装置和方法

    公开(公告)号:US07973683B2

    公开(公告)日:2011-07-05

    申请号:US12320288

    申请日:2009-01-22

    IPC分类号: H03M7/00

    CPC分类号: H03M7/40

    摘要: A lossless coding and/or decoding apparatus and method. The lossless coding apparatus may read a probability model corresponding to each of a plurality of context groups. Here, the probability model stored in a memory may be generated by grouping a context. The lossless coding apparatus may code a symbol using the probability model and generate a bitstream. The lossless coding apparatus may enhance coding efficiency and reduce an amount of space utilized by the memory.

    摘要翻译: 一种无损编码和/或解码装置和方法。 无损编码装置可以读取与多个上下文组中的每一个对应的概率模型。 这里,可以通过对上下文进行分组来生成存储在存储器中的概率模型。 无损编码装置可以使用概率模型对符号进行编码,并生成比特流。 无损编码装置可以提高编码效率并减少存储器利用的空间量。

    Low-bitrate encoding/decoding method and system
    9.
    发明申请
    Low-bitrate encoding/decoding method and system 审中-公开
    低比特率编码/解码方法和系统

    公开(公告)号:US20060004566A1

    公开(公告)日:2006-01-05

    申请号:US11165569

    申请日:2005-06-24

    IPC分类号: G10L21/00

    摘要: A low-bitrate encoding system includes: a time-frequency transform unit transforming an input time-domain audio signal into a frequency-domain audio signal; a frequency component processor unit decimating frequency components in the frequency-domain audio signal; a psychoacoustic model unit modeling the received time-domain audio signal on the basis of human auditory characteristics, and calculating encoding bit allocation information; a quantizer unit quantizing the frequency-domain audio signal input from the frequency component processor unit to have a bitrate based on the encoding bit allocation information input from the psychoacoustic model unit; and a lossless encoder unit encoding the quantized audio signal losslessly, and outputting the encoded audio signal in a bitstream format. Using the low-bitrate encoding system, it is possible to effectively compress data at a low bitrate, and thus to provide a high quality audio signal.

    摘要翻译: 低比特率编码系统包括:时间 - 频率变换单元,将输入的时域音频信号变换为频域音频信号; 频率分量处理器单元抽取频域音频信号中的频率分量; 心理声学模型单元,基于人类听觉特征对所接收的时域音频信号进行建模,以及计算编码比特分配信息; 量化器单元,根据从心理声学模型单元输入的编码比特分配信息量化从频率分量处理器单元输入的频域音频信号以具有比特率; 以及无损地编码量化音频信号的无损编码器单元,并以比特流格式输出编码音频信号。 使用低比特率编码系统,可以以低比特率有效地压缩数据,从而提供高质量的音频信号。

    Method and apparatus for non-overlapped transforming of an audio signal, method and apparatus for adaptively encoding audio signal with the transforming, method and apparatus for inverse non-overlapped transforming of an audio signal, and method and apparatus for adaptively decoding audio signal with the inverse transforming
    10.
    发明授权
    Method and apparatus for non-overlapped transforming of an audio signal, method and apparatus for adaptively encoding audio signal with the transforming, method and apparatus for inverse non-overlapped transforming of an audio signal, and method and apparatus for adaptively decoding audio signal with the inverse transforming 有权
    用于音频信号的非重叠变换的方法和装置,用于对音频信号进行逆非重叠变换的变换,方法和装置对音频信号进行自适应编码的方法和装置,以及用于使用音频信号自适应地解码音频信号的方法和装置 逆变换

    公开(公告)号:US08086446B2

    公开(公告)日:2011-12-27

    申请号:US11295648

    申请日:2005-12-07

    IPC分类号: G10L19/02

    CPC分类号: G10L19/022

    摘要: A method and apparatus for transforming an audio signal, a method and apparatus for adaptively encoding an audio signal, a method and apparatus for inversely transforming an audio signal, and a method and apparatus for adaptively decoding an audio signal. The method of transforming an audio signal includes determining a transform unit into which the audio signal in a time domain is to be transformed into an audio signal in a frequency domain, and transforming the audio signal into an audio signal in the frequency domain according to the determined transform units using a window coefficient other than 0. Accordingly, it is possible to minimize distortion of the audio signal when encoding the audio signal even at a high bit rate while increasing efficiency of compression.

    摘要翻译: 用于变换音频信号的方法和装置,用于对音频信号进行自适应编码的方法和装置,用于对音频信号进行逆变换的方法和装置,以及用于对音频信号进行自适应解码的方法和装置。 变换音频信号的方法包括:确定将时域中的音频信号变换为频域的音频信号的变换单元,并根据所述频域将音频信号变换为频域中的音频信号 使用除了0以外的窗系数的确定的变换单元。因此,即使以高比特率对音频信号进行编码也可以最小化音频信号的失真,同时提高压缩效率。