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1. 发明授权

US08712782B2 Method and apparatus to determine encoding mode of audio signal and method and apparatus to encode and/or decode audio signal using the encoding mode determination method and apparatus 有权
公开(公告)号：US08712782B2
公开(公告)日：2014-04-29
申请号：US11939074
申请日：2007-11-13
申请人： Chang-yong Son , Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim , Ho-sang Sung , Kang-eun Lee
发明人： Chang-yong Son , Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim , Ho-sang Sung , Kang-eun Lee
IPC分类号： G10L21/00 , G10L19/22 , G10L19/00 , G10L19/005 , G10L19/02 , G10L19/18
摘要： A method and apparatus to determine an encoding mode of an audio signal, and a method and apparatus to encode an audio signal according to the encoding mode. In the encoding mode determination method, a mode determination threshold for the current frame that is subject to encoding mode determination is adaptively adjusted according to a long-term feature of the audio signal for a frame (the current frame) that is subject to encoding mode determination, thereby improving the hit rate of encoding mode determination and signal classification, suppressing frequent oscillation of an encoding mode in frame units, improving noise tolerance, and improving smoothness of a reconstructed audio signal.

2. 发明授权

US08219393B2 Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same 有权
标题翻译：用于音频信号的错误隐藏方法和装置以及使用其的音频信号的解码方法和装置
公开(公告)号：US08219393B2
公开(公告)日：2012-07-10
申请号：US11930752
申请日：2007-10-31
申请人： Eun-mi Oh , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-hoe Kim , Kang-eun Lee
发明人： Eun-mi Oh , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-hoe Kim , Kang-eun Lee
IPC分类号： G10L21/00
CPC分类号： G10L19/005 , G10L19/0212 , G10L19/022 , H03M13/00
摘要： An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.
摘要翻译：一种用于音频信号的错误隐藏方法和装置，以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。错误隐藏方法包括：当在当前帧中发生错误时，基于预定标准，选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案，选择重复方案和在频域中的内插方案作为当前帧的错误隐藏方案，当选择频域中的错误隐藏时，基于预定标准，并且使用所选择的方案来隐藏当前帧的错误。

3. 发明申请

US20070271480A1 METHOD AND APPARATUS TO CONCEAL ERROR IN DECODED AUDIO SIGNAL 有权
标题翻译：解码音频信号中的隐含错误的方法和装置
公开(公告)号：US20070271480A1
公开(公告)日：2007-11-22
申请号：US11749249
申请日：2007-05-16
申请人： Eun-mi OH , Ho-sang Sung , Chang-yong Son , Ki-hyun Choo , Jung-hoe Kim
发明人： Eun-mi OH , Ho-sang Sung , Chang-yong Son , Ki-hyun Choo , Jung-hoe Kim
IPC分类号： G06F11/00
CPC分类号： G10L19/005
摘要： A method and apparatus to decode audio data constructed with a plurality of layers. An error concealment method of process a decoded bitstream selects one of a frequency domain and a time domain in order to conceal the errors, detects a position where the errors exist in a frame when the error concealment method in the frequency domain is selected, and conceals the errors only in a segment after the detected position.
摘要翻译：一种解码由多层构成的音频数据的方法和装置。处理解码比特流的错误隐藏方法选择频域和时域中的一个以隐藏错误，当选择频域中的错误隐藏方法时，检测在帧中存在错误的位置，并且隐藏检测到位置之后的错误。

4. 发明申请

US20120278089A1 ERROR CONCEALMENT METHOD AND APPARATUS FOR AUDIO SIGNAL AND DECODING METHOD AND APPARATUS FOR AUDIO SIGNAL USING THE SAME 有权
标题翻译：用于音频信号和解码方法的错误接收方法和装置以及使用该信号的音频信号的装置
公开(公告)号：US20120278089A1
公开(公告)日：2012-11-01
申请号：US13544203
申请日：2012-07-09
申请人： Eun-mi OH , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-heo Kim , Kang-eun Lee
发明人： Eun-mi OH , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-heo Kim , Kang-eun Lee
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L19/0212 , G10L19/022 , H03M13/00
摘要： An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.
摘要翻译：一种用于音频信号的错误隐藏方法和装置，以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。错误隐藏方法包括：当在当前帧中发生错误时，基于预定标准，选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案，选择重复方案和在频域中的内插方案作为当前帧的错误隐藏方案，当选择频域中的错误隐藏时，基于预定标准，并且使用所选择的方案来隐藏当前帧的错误。

5. 发明授权

US08285555B2 Method, medium, and system scalably encoding/decoding audio/speech 有权
标题翻译：方法，媒体和系统可扩展地编码/解码音频/语音
公开(公告)号：US08285555B2
公开(公告)日：2012-10-09
申请号：US11984686
申请日：2007-11-20
申请人： Eun-mi Oh , Ho-sang Sung , Ki-hyun Choo , Kang-eun Lee
发明人： Eun-mi Oh , Ho-sang Sung , Ki-hyun Choo , Kang-eun Lee
IPC分类号： G10L19/00
CPC分类号： G10L19/24
摘要： A method, medium, and system scalably encoding/decoding audio/speech. The method includes splitting an input signal into a low frequency band signal that is lower than a predetermined frequency and a high frequency band signal that is higher than the predetermined frequency, scalably encoding the split low frequency band signal into a core layer and one or more extension layers and then decoding the encoded core layer and the encoded extension layers, generating an error signal by using the split low frequency band signal and a decoded signal of the encoded core layer and the encoded extension layers, and encoding the error signal and the high frequency band signal into a signal-to-noise ratio (SNR) enhancement layer and a bandwidth extension layer.
摘要翻译：一种方法，媒体和系统可扩展地编码/解码音频/语音。该方法包括将输入信号分成低于预定频率的低频带信号和高于预定频率的高频带信号，将分割的低频带信号可扩展地编码为核心层和一个或多个扩展层，然后对编码的核心层和编码的扩展层进行解码，通过使用分割的低频带信号和编码的核心层和经编码的扩展层的解码信号产生误差信号，并对误差信号和高频带信号转换成信噪比（SNR）增强层和带宽扩展层。

6. 发明授权

US07498959B2 Apparatus and method of wideband decoding to synthesize a decoded excitation signal with a generated high frequency band signal 失效
标题翻译：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
申请人： Kang-eun Lee , Eun-mi Oh , Ho-sang Sung , Chang-yong Son , Ki-hyun Choo , Jung-hoe Kim
发明人： Kang-eun Lee , Eun-mi Oh , Ho-sang Sung , Chang-yong Son , Ki-hyun Choo , Jung-hoe Kim
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。

7. 发明授权

US10152983B2 Apparatus and method for encoding/decoding for high frequency bandwidth extension 有权
公开(公告)号：US10152983B2
公开(公告)日：2018-12-11
申请号：US13977906
申请日：2011-12-28
申请人： Ki-hyun Choo , Eun-mi Oh , Ho-sang Sung
发明人： Ki-hyun Choo , Eun-mi Oh , Ho-sang Sung
IPC分类号： G10L19/18 , G10L19/12 , G10L19/24 , G10L19/038 , G10L21/038 , G10L19/00
摘要： A method and apparatus for performing coding and decoding for high-frequency bandwidth extension. The coding apparatus may down-sample an input signal, perform core coding on the down-sampled input signal, perform frequency transformation on the input signal, and perform bandwidth extension coding by using a base signal of the input signal in a frequency domain.

8. 发明授权

US08676569B2 Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same 有权
标题翻译：用于音频信号的错误隐藏方法和装置以及使用其的音频信号的解码方法和装置
公开(公告)号：US08676569B2
公开(公告)日：2014-03-18
申请号：US13544203
申请日：2012-07-09
申请人： Eun-mi Oh , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-hoe Kim , Kang-eun Lee
发明人： Eun-mi Oh , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-hoe Kim , Kang-eun Lee
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L19/0212 , G10L19/022 , H03M13/00
摘要： An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.
摘要翻译：一种用于音频信号的错误隐藏方法和装置，以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。错误隐藏方法包括：当在当前帧中发生错误时，基于预定标准，选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案，选择重复方案和在频域中的内插方案作为当前帧的错误隐藏方案，当选择频域中的错误隐藏时，基于预定标准，并且使用所选择的方案来隐藏当前帧的错误。

9. 发明授权

US08321229B2 Apparatus, medium and method to encode and decode high frequency signal 有权
标题翻译：装置，介质和方法对高频信号进行编码和解码
公开(公告)号：US08321229B2
公开(公告)日：2012-11-27
申请号：US12256704
申请日：2008-10-23
申请人： Ki-hyun Choo , Eun-mi Oh , Ho-sang Sung , Jung-hoe Kim , Mi-young Kim
发明人： Ki-hyun Choo , Eun-mi Oh , Ho-sang Sung , Jung-hoe Kim , Mi-young Kim
IPC分类号： G06F15/00 , G10L19/00 , G10L21/00
CPC分类号： G10L25/93 , G10L21/038
摘要： A method and apparatus to encoding or decoding an audio signal is provided. In the method and apparatus, a noise-floor level to use in encoding or decoding a high frequency signal is updated according to the degree of a voiced or unvoiced sound included in the signal.
摘要翻译：提供了一种对音频信号进行编码或解码的方法和装置。在该方法和装置中，根据信号中包含的有声或无声音的程度来更新用于对高频信号进行编码或解码的噪声底层电平。

10. 发明申请

US20090006081A1 METHOD, MEDIUM AND APPARATUS FOR ENCODING AND/OR DECODING SIGNAL 审中-公开
标题翻译：用于编码和/或解码信号的方法，介质和装置
公开(公告)号：US20090006081A1
公开(公告)日：2009-01-01
申请号：US12033342
申请日：2008-02-19
申请人： Eun-mi OH , Ho-sang Sung , Ki-hyun Choo , Jung-hoe Kim , Mi-young Kim
发明人： Eun-mi OH , Ho-sang Sung , Ki-hyun Choo , Jung-hoe Kim , Mi-young Kim
IPC分类号： G10L19/00
CPC分类号： G10L19/02 , G10L19/008 , G10L19/0208 , G10L19/025 , G10L19/167 , G10L19/20 , G10L19/24
摘要： Provided are a method and apparatus for encoding or decoding an audio signal or a speech signal. In the encoding method, encoding is performed by performing domain transformation on a received signal in units of frequency bands by applying a psychoacoustic model, encoding the transformation result with respect to predetermined one or more frequency bands by using a high temporal resolution coding tool, and then quantizing the encoding result. In the decoding method, decoding is performed by inversely quantizing signals obtained by encoding in units of frequency bands, decoding one or more signals from among the inversely quantized signals, which are allocated to one or more frequency bands which have a predetermined domain resolution, determined by applying the psychoacoustic model, that is greater than a predetermined value, according to a predetermined method, and then inversely transforming either the inversely quantized or the one or more decoded signals.
摘要翻译：提供了一种用于对音频信号或语音信号进行编码或解码的方法和装置。在编码方法中，通过使用心理声学模型，通过使用高时间分辨率编码工具对相对于预定的一个或多个频带进行变换结果的编码，对以频带为单位的接收信号进行域变换来进行编码，以及然后量化编码结果。在解码方法中，通过对由频带单位进行编码而得到的信号进行逆量化，对从量化后的信号中分离的一个以上的信号进行解码，分解成具有规定的域分辨率的一个以上的频带，通过应用根据预定方法大于预定值的心理声学模型，然后逆向变换反量化或一个或多个解码信号。

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