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公开(公告)号：US07941314B2
公开(公告)日：2011-05-10
申请号：US12777875
申请日：2010-05-11
申请人： Dejun Zhang , Liang Zhang , Lixiong Li , Tinghong Wang , Yue Lang , Wenhai Wu
发明人： Dejun Zhang , Liang Zhang , Lixiong Li , Tinghong Wang , Yue Lang , Wenhai Wu
IPC分类号： G10L19/12
CPC分类号： G10L19/10 , G10L19/107
摘要： A fixed codebook search method includes: initializing a counter; searching for pulses and calculating the value of a cost function Qk; initializing the counter if the Qk value increases; increasing the value of the counter if the Qk value does not increase; judging whether the value of the counter is greater than the threshold value; continuing the search process if the value of the counter is not greater than the threshold value; and ending the whole search process if the value of the counter is greater than the threshold value. The present invention reduces the search count and improves the search efficiency.
摘要翻译： 固定码本搜索方法包括：初始化计数器; 搜索脉冲并计算成本函数Qk的值; 如果Qk值增加则初始化计数器; 如果Qk值不增加则增加计数器的值; 判断所述计数器的值是否大于所述阈值; 如果计数器的值不大于阈值，继续搜索过程; 如果计数器的值大于阈值，则结束整个搜索过程。 本发明减少了搜索次数，提高了搜索效率。
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2.发明授权Coding method, encoder, and computer readable medium that uses one of multiple codebooks based on a type of input signal 有权编码方法，编码器和计算机可读介质，其基于输入信号的类型使用多个码本之一公开(公告)号：US08600739B2
公开(公告)日：2013-12-03
申请号：US12481060
申请日：2009-06-09
申请人： Dejun Zhang , Liang Zhang , Yue Lang , Tinghong Wang , Lixiong Li , Wenhai Wu , Wei Xiao , Fuwei Ma , Zexin Liu
发明人： Dejun Zhang , Liang Zhang , Yue Lang , Tinghong Wang , Lixiong Li , Wenhai Wu , Wei Xiao , Fuwei Ma , Zexin Liu
IPC分类号： G10L19/24
CPC分类号： G10L19/24 , G10L2019/0013
摘要： 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.
摘要翻译： 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：US20100274559A1
公开(公告)日：2010-10-28
申请号：US12838229
申请日：2010-07-16
申请人： Dejun Zhang , Liang Zhang , Lixiong Li , Tinghong Wang , Yue Lang , Wenhai Wu
发明人： Dejun Zhang , Liang Zhang , Lixiong Li , Tinghong Wang , Yue Lang , Wenhai Wu
IPC分类号： G10L19/12
CPC分类号： G10L19/10 , G10L19/107
摘要： A fixed codebook search method includes initializing a counter, searching for pulses and calculating the value of a cost function Qk, initializing the counter if the Qk value increases, increasing the value of the counter if the Qk value does not increase, judging whether the value of the counter is greater than the threshold value, continuing the search process if the value of the counter is not greater than the threshold value, and ending the whole search process if the value of the counter is greater than the threshold value.
摘要翻译： 固定码本搜索方法包括初始化计数器，搜索脉冲和计算成本函数Qk的值，如果Qk值增加则初始化计数器，如果Qk值不增加则增加计数器的值，判断该值是否为 计数器的值大于阈值，如果计数器的值不大于阈值则继续搜索处理，如果计数器的值大于阈值则结束整个搜索处理。
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公开(公告)号：US07908136B2
公开(公告)日：2011-03-15
申请号：US12838229
申请日：2010-07-16
申请人： Dejun Zhang , Liang Zhang , Lixiong Li , Tinghong Wang , Yue Lang , Wenhai Wu
发明人： Dejun Zhang , Liang Zhang , Lixiong Li , Tinghong Wang , Yue Lang , Wenhai Wu
IPC分类号： G10L19/12
CPC分类号： G10L19/10 , G10L19/107
摘要： A fixed codebook search method includes initializing a counter, searching for pulses and calculating the value of a cost function Qk, initializing the counter if the Qk value increases, increasing the value of the counter if the Qk value does not increase, judging whether the value of the counter is greater than the threshold value, continuing the search process if the value of the counter is not greater than the threshold value, and ending the whole search process if the value of the counter is greater than the threshold value.
摘要翻译： 固定码本搜索方法包括初始化计数器，搜索脉冲和计算成本函数Qk的值，如果Qk值增加则初始化计数器，如果Qk值不增加则增加计数器的值，判断该值是否为 计数器的值大于阈值，如果计数器的值不大于阈值则继续搜索处理，如果计数器的值大于阈值则结束整个搜索处理。
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公开(公告)号：US20100235173A1
公开(公告)日：2010-09-16
申请号：US12777875
申请日：2010-05-11
申请人： Dejun Zhang , Liang Zhang , Lixiong Li , Tinghong Wang , Yue Lang , Wenhai Wu
发明人： Dejun Zhang , Liang Zhang , Lixiong Li , Tinghong Wang , Yue Lang , Wenhai Wu
IPC分类号： G10L19/00
CPC分类号： G10L19/10 , G10L19/107
摘要： A fixed codebook search method includes: initializing a counter; searching for pulses and calculating the value of a cost function Qk; initializing the counter if the Qk value increases; increasing the value of the counter if the Qk value does not increase; judging whether the value of the counter is greater than the threshold value; continuing the search process if the value of the counter is not greater than the threshold value; and ending the whole search process if the value of the counter is greater than the threshold value. The present invention reduces the search count and improves the search efficiency.
摘要翻译： 固定码本搜索方法包括：初始化计数器; 搜索脉冲并计算成本函数Qk的值; 如果Qk值增加则初始化计数器; 如果Qk值不增加则增加计数器的值; 判断所述计数器的值是否大于所述阈值; 如果计数器的值不大于阈值，继续搜索过程; 如果计数器的值大于阈值，则结束整个搜索过程。 本发明减少了搜索次数，提高了搜索效率。
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公开(公告)号：US08214218B2
公开(公告)日：2012-07-03
申请号：US13162309
申请日：2011-06-16
IPC分类号： G10L19/00
摘要： 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.
摘要翻译： 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：US20120053714A1
公开(公告)日：2012-03-01
申请号：US13290809
申请日：2011-11-07
IPC分类号： G06F17/00
CPC分类号： H04S1/007 , H04S2420/03
摘要： A signal delay detection method, a detection apparatus, and a coder are disclosed to improve accuracy of detecting the signal delay. The method includes: obtaining a first cumulative cross-correlation function according to cross-correlation functions between channel signals; determining a first delay between the channel signals corresponding to the first cumulative cross-correlation function; adjusting a second cumulative cross-correlation function according to a relationship between the first delay and a second delay that exist between the channel signals, where the second delay is obtained at time of adjusting the second cumulative cross-correlation function and an initial value of the second delay is determined according to an initial value of a second weighting coefficient of the second cumulative cross-correlation function; and determining the second delay corresponding to the adjusted second cumulative cross-correlation function as a delay detected between the channel signals.
摘要翻译： 公开了一种信号延迟检测方法，检测装置和编码器，以提高检测信号延迟的精度。 该方法包括：根据信道信号之间的互相关函数获得第一累积互相关函数; 确定对应于第一累积互相关函数的信道信号之间的第一延迟; 根据存在于通道信号之间的第一延迟和第二延迟之间的关系来调整第二累积互相关函数，其中在调整第二累积互相关函数时获得第二延迟和第二累积互相关函数的初始值 根据第二累积互相关函数的第二加权系数的初始值来确定第二延迟; 以及确定与所调整的第二累积互相关函数相对应的第二延迟作为在所述信道信号之间检测到的延迟。
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公开(公告)号：US08000968B1
公开(公告)日：2011-08-16
申请号：US13094340
申请日：2011-04-26
IPC分类号： G10L19/00
摘要： 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.
摘要翻译： 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：US10008210B2
公开(公告)日：2018-06-26
申请号：US13572469
申请日：2012-08-10
IPC分类号： H04R5/00 , G10L19/008
CPC分类号： G10L19/008
摘要： 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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10.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分类号： H04R5/00
CPC分类号： H04S1/002 , G10L19/008 , G10L25/18 , H04S2400/03 , H04S2420/01 , H04S2420/03
摘要： 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.
摘要翻译： 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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