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公开(公告)号：US10008210B2
公开(公告)日：2018-06-26
申请号：US13572469
申请日：2012-08-10
IPC: H04R5/00 , G10L19/008
CPC classification number: G10L19/008
Abstract: A method, an apparatus, and a system for encoding and decoding multi-channel signals are disclosed. The method for encoding multi-channel signals includes: determining the category of an index corresponding to a channel level difference (CLD) which needs to be quantized in a current frame; quantizing the CLD of at least one frequency band whose index category is the same as the determined category of the index in the current frame, and obtaining quantized data.
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2.发明申请STEREO SIGNAL DOWN-MIXING METHOD, ENCODING/DECODING APPARATUS AND ENCODING AND DECODING SYSTEM 有权立体声信号下混合方法，编码/解码装置和编码和解码系统公开(公告)号：US20120308018A1
公开(公告)日：2012-12-06
申请号：US13584579
申请日：2012-08-13
IPC: H04R5/00
CPC classification number: H04S1/002 , G10L19/008 , G10L25/18 , H04S2400/03 , H04S2420/01 , H04S2420/03
Abstract: Embodiments of the present invention provide a stereo signal down-mixing method, encoding/decoding apparatus and system. The down-mixing method includes: converting a first channel time-domain signal and a second channel time-domain signal into a first channel frequency-domain signal and a second channel frequency-domain signal; obtaining a frequency-domain channel signal level difference and a frequency-domain channel signal phase difference between the two channel frequency-domain signals; for each frequency bin in each frequency band, using a function based on the frequency-domain channel signal level difference and frequency-domain channel signal phase difference to obtain a down-mixed signal phase that is located between phases of the two channel frequency-domain signals, and obtaining a down-mixed signal amplitude through calculation; and obtaining a frequency-domain down-mixed signal according to the phase and amplitude.
Abstract translation: 本发明的实施例提供立体声信号下混合方法，编码/解码装置和系统。 下混合方法包括：将第一信道时域信号和第二信道时域信号转换成第一信道频域信号和第二信道频域信号; 获得两个信道频域信号之间的频域信道信号电平差和频域信道信号相位差; 对于每个频带中的每个频率仓，使用基于频域信道信号电平差和频域信道信号相位差的函数来获得位于两个信道频域的相位之间的下变频信号相位 信号，并通过计算获得下混合信号幅度; 并根据相位和幅度获得频域降混信号。
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公开(公告)号：US20120300945A1
公开(公告)日：2012-11-29
申请号：US13567982
申请日：2012-08-06
IPC: H04R5/00
CPC classification number: G10L19/008 , G10L25/06
Abstract: A stereo coding method includes transforming a stereo left channel signal and a stereo right channel signal in a time domain to a frequency domain to form a left channel signal and a right channel signal in the frequency domain; down-mixing the left channel signal and the right channel signal in the frequency domain to generate a monophonic down-mix signal, and transmitting bits obtained after quantization coding is performed on the down-mix signal; extracting spatial parameters of the left channel signal and the right channel signal in the frequency domain; estimating a group delay and a group phase between stereo left and right channels by using the left channel signal and the right channel signal in the frequency domain; and performing quantization coding on the group delay, the group phase and the spatial parameters, so as to obtain a high-quality stereo coding performance at a low bit rate.
Abstract translation: 立体声编码方法包括将时域中的立体声左声道信号和立体声右声道信号变换为频域，以在频域中形成左声道信号和右声道信号; 在频域中对左声道信号和右声道信号进行下混频以产生单声道降混信号，并且对缩小混音信号执行在量化编码之后获得的发送比特; 在频域中提取左声道信号和右声道信号的空间参数; 通过使用左声道信号和频域中的右声道信号来估计立体声左和右声道之间的组延迟和组相位; 对组延迟，组相位和空间参数进行量化编码，以便以低比特率获得高质量的立体声编码性能。
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公开(公告)号：US20110317843A1
公开(公告)日：2011-12-29
申请号：US13224806
申请日：2011-09-02
IPC: H04R5/00
CPC classification number: G10L19/008 , G10L19/0204 , H04S1/007
Abstract: A stereo encoding method, a stereo encoding device, and an encoder are provided. The stereo encoding method includes: obtaining a left channel energy relation coefficient and a right channel energy relation coefficient; obtaining a left energy sum and a right energy sum respectively; performing cross correlation between sub-bands of a first monophonic signal at a wave trough and sub-bands of the left channel signal according to the left channel energy relation coefficient, and performing cross correlation between sub-bands of the first monophonic signal at the wave trough and sub-bands of the right channel signal according to the right channel energy relation coefficient; obtaining a scaling factor by using the left energy sum, the right energy sum, and cross correlation results; and encoding the stereo left and right channel signals according to the scaling factor.
Abstract translation: 提供立体声编码方法，立体声编码装置和编码器。 立体声编码方法包括：获得左声道能量关系系数和右声道能量关系系数; 分别获得左边的能量和和能量的和; 根据左声道能量关系系数，在波谷处的第一单声道信号的子带与左声道信号的子带之间进行互相关，并且在波形上执行第一单声道信号的子带之间的互相关 根据右声道能量关系系数，右声道信号的波谷和子带; 通过使用左边的能量和，正确的能量和和互相关的结果获得比例因子; 并根据缩放因子对立体声左右声道信号进行编码。
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公开(公告)号：US20110301962A1
公开(公告)日：2011-12-08
申请号：US13208460
申请日：2011-08-12
IPC: G10L19/00
CPC classification number: G10L19/008 , H04S1/007 , H04S2420/03
Abstract: A stereo encoding method and apparatus are provided, so as to reduce distortion caused by delay adjustment. The stereo encoding method includes: extracting a current interchannel delay of a stereo signal and a previous delay adjacent to the current interchannel delay; performing adjustment frame judgment according to characteristics of the current stereo signal when the current delay and the previous delay are different; and performing delay adjustment on the stereo signal by using the current interchannel delay if it is judged that a frame where the current delay occurs is an adjustment frame.
Abstract translation: 提供立体声编码方法和装置，以便减少由延迟调整引起的失真。 立体声编码方法包括：提取立体声信号的当前通道间延迟和与当前通道间延迟相邻的先前延迟; 当当前延迟和先前的延迟不同时，根据当前立体声信号的特性进行调整帧判断; 并且如果判断当前延迟发生的帧是调整帧，则通过使用当前的信道间延迟来对立体声信号执行延迟调整。
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Patent Agency Ranking
公开(公告)号：US20110270614A1
公开(公告)日：2011-11-03
申请号：US13162309
申请日：2011-06-16
IPC: G10L13/00
Abstract: A method and an apparatus for switching speech or audio signals, wherein the method for switching speech or audio signals includes when switching of a speech or audio, weighting a first high frequency band signal of a current frame of speech or audio signal and a second high frequency band signal of the previous M frame of speech or audio signals to obtain a processed first high frequency band signal, where M is greater than or equal to 1, and synthesizing the processed first high frequency band signal and a first low frequency band signal of the current frame of speech or audio signal into a wide frequency band signal. In this way, speech or audio signals with different bandwidths can be smoothly switched, thus improving the quality of audio signals received by a user.
Abstract translation: 一种用于切换语音或音频信号的方法和装置，其中用于切换语音或音频信号的方法包括：当切换语音或音频时，加权当前语音或音频信号帧的第一高频带信号， 先前的M帧语音或音频信号的频带信号，以获得经处理的第一高频带信号，其中M大于或等于1，并且合成经处理的第一高频带信号和第一低频带信号 将当前的语音帧或音频信号转换成宽频带信号。 以这种方式，可以平滑地切换具有不同带宽的语音或音频信号，从而提高用户接收的音频信号的质量。
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公开(公告)号：US20090248406A1
公开(公告)日：2009-10-01
申请号：US12481060
申请日：2009-06-09
Applicant: Dejun ZHANG , Liang ZHANG , Yue LANG , Tinghong WANG , Lixiong LI , Wenhai WU , Wei XIAO , Fuwei MA , Zexin LIU
Inventor： Dejun ZHANG , Liang ZHANG , Yue LANG , Tinghong WANG , Lixiong LI , Wenhai WU , Wei XIAO , Fuwei MA , Zexin LIU
IPC: G10L19/12
CPC classification number: G10L19/24 , G10L2019/0013
Abstract: A coding method is adapted to select different codebook search algorithms according to varied types of input signals. An encoder using the coding method is also provided. As appropriate search algorithms may be selected according to all possible structural features of the input signals, certain types of signals for which satisfactory results may be obtained through simple computations may match with search algorithms suitable for these signal types and having low computation complexities, so as to achieve better performance with fewer system resources. Meanwhile, other types of signals that need complicated computations may be processed by more sophisticated search algorithms, thereby ensuring the coding quality.
Abstract translation: 一种编码方法适用于根据不同类型的输入信号选择不同的码本搜索算法。 还提供了使用编码方法的编码器。 可以根据输入信号的所有可能的结构特征来选择合适的搜索算法，通过简单的计算可获得令人满意的结果的某些类型的信号可以与适合于这些信号类型的搜索算法匹配并具有低的计算复杂度，因此 以更少的系统资源实现更好的性能。 同时，需要复杂计算的其他类型的信号可以通过更复杂的搜索算法来处理，从而确保编码质量。
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公开(公告)号：US20050077770A1
公开(公告)日：2005-04-14
申请号：US10682704
申请日：2003-10-09
Applicant: Yue Lang , Edward Poulos , Karl Murphy , Hsing Lewis Liu
Inventor： Yue Lang , Edward Poulos , Karl Murphy , Hsing Lewis Liu
IPC: A47C1/02 , B60N20060101 , B60N2/015 , B60N2/20 , B60N2/36
CPC classification number: B60N2/01583 , B60N2/36
Abstract: A vehicle seat support frame assembly (14) has a seat cushion base member (16) with opposite ends (20) and (22) pivotally connected to first and second legs (28, 40). The first legs (28) are also pivotally connected to the associated vehicle and the second legs (40) have first and second latches (50) and (52). Each first latch (50) provides securement of the associated second leg to the associated vehicle in the seating position, and each second latch (52) prevents pivoting between the second leg and the seat cushion base member end (22) to provide rigidity in the seating position.
Abstract translation: 车辆座椅支撑框架组件（14）具有座垫基座构件（16），其相对端部（20）和（22）枢转地连接到第一和第二腿部（28,40）。 第一腿（28）也枢转地连接到相关联的车辆，并且第二腿部（40）具有第一和第二闩锁（50）和（52）。 每个第一闩锁（50）在关闭位置提供相关联的第二支腿固定到相关联的车辆，并且每个第二闩锁（52）防止第二支腿和座垫基座构件端部（22）之间的枢转，从而在 座位。
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9.发明授权公开(公告)号：US09432784B2
公开(公告)日：2016-08-30
申请号：US13730724
申请日：2012-12-28
IPC: H04R1/32 , H04R29/00 , G10L19/008
CPC classification number: H04R29/00 , G10L19/008 , H04S2420/03
Abstract: A method and an apparatus for estimating an interchannel delay of a sound signal are, related to the communication field and capable of realizing a stable sound field in a crosstalk. The method includes calculating an error between an actual interchannel phase difference and a predicted interchannel phase difference of a sound signal. The predicted interchannel phase difference is predicted according to a predetermined interchannel delay of the sound signal. The method also includes determining whether the sound signal is a sound signal in a crosstalk according to the error. The method further includes, if the sound signal is a sound signal in the crosstalk, setting an interchannel delay corresponding to the sound signal to a fixed value. The apparatus is configured to perform the method.
Abstract translation: 用于估计声音信号的信道间延迟的方法和装置与通信领域有关，并且能够实现串扰中的稳定的声场。 该方法包括计算实际的信道间相位差和声音信号的预测通道间相位差之间的误差。 预测的通道间相位差根据声音信号的预定的通道间延迟来预测。 该方法还包括根据误差确定声音信号是否是串扰中的声音信号。 该方法还包括如果声音信号是串扰中的声音信号，则将与声音信号相对应的通道间延迟设置为固定值。 该装置被配置为执行该方法。
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10.发明授权Stereo signal down-mixing method, encoding/decoding apparatus and encoding and decoding system 有权立体声信号下混方式，编码/解码装置及编解码系统公开(公告)号：US09319818B2
公开(公告)日：2016-04-19
申请号：US13584579
申请日：2012-08-13
IPC: H04S1/00 , G10L19/008 , G10L25/18
CPC classification number: H04S1/002 , G10L19/008 , G10L25/18 , H04S2400/03 , H04S2420/01 , H04S2420/03
Abstract: Embodiments of the present invention provide a stereo signal down-mixing method, encoding/decoding apparatus and system. The down-mixing method includes: converting a first channel time-domain signal and a second channel time-domain signal into a first channel frequency-domain signal and a second channel frequency-domain signal; obtaining a frequency-domain channel signal level difference and a frequency-domain channel signal phase difference between the two channel frequency-domain signals; for each frequency bin in each frequency band, using a function based on the frequency-domain channel signal level difference and frequency-domain channel signal phase difference to obtain a down-mixed signal phase that is located between phases of the two channel frequency-domain signals, and obtaining a down-mixed signal amplitude through calculation; and obtaining a frequency-domain down-mixed signal according to the phase and amplitude.
Abstract translation: 本发明的实施例提供立体声信号下混合方法，编码/解码装置和系统。 下混合方法包括：将第一信道时域信号和第二信道时域信号转换成第一信道频域信号和第二信道频域信号; 获得两个信道频域信号之间的频域信道信号电平差和频域信道信号相位差; 对于每个频带中的每个频率仓，使用基于频域信道信号电平差和频域信道信号相位差的函数来获得位于两个信道频域的相位之间的下变频信号相位 信号，并通过计算获得下混合信号幅度; 并根据相位和幅度获得频域降混信号。
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