WIDEBAND SIGNAL ENCODING, DECODING AND TRANSMISSION
    12.
    发明申请
    WIDEBAND SIGNAL ENCODING, DECODING AND TRANSMISSION 失效
    宽带信号编码,解码和传输

    公开(公告)号:US20070296614A1

    公开(公告)日:2007-12-27

    申请号:US11766322

    申请日:2007-06-21

    IPC分类号: H03M7/00

    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。

    Method and apparatus for adaptively encoding and decoding high frequency band
    14.
    发明授权
    Method and apparatus for adaptively encoding and decoding high frequency band 有权
    用于自适应编码和解码高频带的方法和装置

    公开(公告)号:US08340962B2

    公开(公告)日:2012-12-25

    申请号:US13220193

    申请日:2011-08-29

    IPC分类号: G10L19/12

    CPC分类号: G10L21/038

    摘要: Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.

    摘要翻译: 提供了一种用于对音频信号进行编码和解码的方法和装置。 根据本申请,通过使用低于预设频带的低频信号,在时域或频域中自适应地编码或解码高于预置频带的高频带的信号。 因此,即使当通过使用少量位来对音频信号进行编码或解码时,高频信号的声音质量也不会恶化,从而可以使编码效率最大化。

    Method and apparatus for adaptively encoding and decoding high frequency band
    15.
    发明授权
    Method and apparatus for adaptively encoding and decoding high frequency band 有权
    用于自适应编码和解码高频带的方法和装置

    公开(公告)号:US08010352B2

    公开(公告)日:2011-08-30

    申请号:US11766331

    申请日:2007-06-21

    IPC分类号: G10L19/12

    CPC分类号: G10L21/038

    摘要: Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.

    摘要翻译: 提供了一种用于对音频信号进行编码和解码的方法和装置。 根据本申请,通过使用低于预设频带的低频信号,在时域或频域中自适应地编码或解码高于预置频带的高频带的信号。 因此,即使当通过使用少量位来对音频信号进行编码或解码时,高频信号的声音质量也不会恶化,从而可以使编码效率最大化。

    METHOD, MEDIUM, AND SYSTEM ENCODING/DECODING MULTI-CHANNEL SIGNAL
    16.
    发明申请
    METHOD, MEDIUM, AND SYSTEM ENCODING/DECODING MULTI-CHANNEL SIGNAL 有权
    方法,介质和系统编码/解码多通道信号

    公开(公告)号:US20090110201A1

    公开(公告)日:2009-04-30

    申请号:US12107117

    申请日:2008-04-22

    IPC分类号: H04H20/47

    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。

    Method, medium, and system encoding/decoding multi-channel signal
    17.
    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。

    METHOD AND APPARATUS TO ENCODE AND/OR DECODE BY APPLYING ADAPTIVE WINDOW SIZE
    20.
    发明申请
    METHOD AND APPARATUS TO ENCODE AND/OR DECODE BY APPLYING ADAPTIVE WINDOW SIZE 审中-公开
    通过应用自适应窗口大小来编码和/或解码的方法和装置

    公开(公告)号:US20080140428A1

    公开(公告)日:2008-06-12

    申请号:US11949925

    申请日:2007-12-04

    IPC分类号: G10L19/00 G10L19/02

    CPC分类号: G10L19/022

    摘要: An apparatus to process an audio signal includes an encoder to determine a variable window size of sub bands of a frame of an audio signal, to transform the sub bands according to the variable window size from a first domain to a second domain, to quantize the transformed sub bands, and to multiplex the quantized sub bands and information on the variable window size corresponding the respective sub bands.

    摘要翻译: 一种用于处理音频信号的装置包括:编码器,用于确定音频信号的帧的子频带的可变窗口大小,以便根据可变窗口尺寸从第一域到第二域变换子带,以量化 并且对量化的子带和关于对应于各个子带的可变窗口大小的信息进行多路复用。