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公开(公告)号：US09583117B2
公开(公告)日：2017-02-28
申请号：US11915834
申请日：2007-10-08
摘要： Techniques for efficiently encoding an input signal are described. In one design, a generalized encoder encodes the input signal (e.g., an audio signal) based on at least one detector and multiple encoders. The at least one detector may include a signal activity detector, a noise-like signal detector, a sparseness detector, some other detector, or a combination thereof. The multiple encoders may include a silence encoder, a noise-like signal encoder, a time-domain encoder, a transform-domain encoder, some other encoder, or a combination thereof. The characteristics of the input signal may be determined based on the at least one detector. An encoder may be selected from among the multiple encoders based on the characteristics of the input signal. The input signal may be encoded based on the selected encoder. The input signal may include a sequence of frames, and detection and encoding may be performed for each frame.
摘要翻译： 描述用于有效地编码输入信号的技术。 在一种设计中，广义编码器基于至少一个检测器和多个编码器对输入信号（例如，音频信号）进行编码。 所述至少一个检测器可以包括信号活动检测器，类噪声信号检测器，稀疏检测器，一些其它检测器或其组合。 多个编码器可以包括静音编码器，噪声状信号编码器，时域编码器，变换域编码器，一些其它编码器或其组合。 可以基于至少一个检测器来确定输入信号的特性。 可以基于输入信号的特性从多个编码器中选择编码器。 可以基于所选择的编码器对输入信号进行编码。 输入信号可以包括一系列帧，并且可以针对每个帧执行检测和编码。
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公开(公告)号：US20090187409A1
公开(公告)日：2009-07-23
申请号：US11915834
申请日：2007-10-08
摘要： Techniques for efficiently encoding an input signal are described. In one design, a generalized encoder encodes the input signal (e.g., an audio signal) based on at least one detector and multiple encoders. The at least one detector may include a signal activity detector, a noise-like signal detector, a sparseness detector, some other detector, or a combination thereof. The multiple encoders may include a silence encoder, a noise-like signal encoder, a time-domain encoder, a transform-domain encoder, some other encoder, or a combination thereof. The characteristics of the input signal may be determined based on the at least one detector. An encoder may be selected from among the multiple encoders based on the characteristics of the input signal. The input signal may be encoded based on the selected encoder. The input signal may include a sequence of frames, and detection and encoding may be performed for each frame.
摘要翻译： 描述用于有效地编码输入信号的技术。 在一种设计中，广义编码器基于至少一个检测器和多个编码器对输入信号（例如，音频信号）进行编码。 所述至少一个检测器可以包括信号活动检测器，类噪声信号检测器，稀疏检测器，一些其它检测器或其组合。 多个编码器可以包括静音编码器，噪声状信号编码器，时域编码器，变换域编码器，一些其它编码器或其组合。 可以基于至少一个检测器来确定输入信号的特性。 可以基于输入信号的特性从多个编码器中选择编码器。 可以基于所选择的编码器对输入信号进行编码。 输入信号可以包括一系列帧，并且可以针对每个帧执行检测和编码。
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公开(公告)号：US09653088B2
公开(公告)日：2017-05-16
申请号：US12137700
申请日：2008-06-12
IPC分类号： G10L19/18 , G10L19/022 , G10L19/08
CPC分类号： G10L19/18 , G10L19/022 , G10L19/08
摘要： A time shift calculated during a pitch-regularizing (PR) encoding of a frame of an audio signal is used to time-shift a segment of another frame during a non-PR encoding.
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4.发明申请SYSTEMS, METHODS, AND APARATUS FOR DYNAMIC NORMALIZATION TO REDUCE LOSS IN PRECISION FOR LOW-LEVEL SIGNALS 有权用于动态正规化的系统，方法和方法，以降低低级别信号精度的损失公开(公告)号：US20080162126A1
公开(公告)日：2008-07-03
申请号：US12023030
申请日：2008-01-30
IPC分类号： G10L21/00
CPC分类号： G10L19/0204 , G10L21/00 , G10L21/0388
摘要： A normalization factor for a current frame of a signal may be determined. The normalization factor may depend on an amplitude of the current frame of the signal. The normalization factor may also depend on non-linear values of states after one or more operations were performed on a previous frame of a normalized signal. The current frame of the signal may be normalized based on the normalization factor that is determined. The states' normalization factor may be adjusted based on the normalization factor that is determined.
摘要翻译： 可以确定信号的当前帧的归一化因子。 归一化因子可以取决于信号的当前帧的幅度。 归一化因子还可以取决于对归一化信号的先前帧执行一个或多个操作之后的状态的非线性值。 信号的当前帧可以基于所确定的归一化因子来归一化。 国家的归一化因子可以根据确定的归一化因子进行调整。
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5.发明申请SYSTEMS, METHODS, AND APPARATUS FOR WIDEBAND ENCODING AND DECODING OF INACTIVE FRAMES 有权用于宽带编码和解码不活动帧的系统，方法和设备公开(公告)号：US20080027717A1
公开(公告)日：2008-01-31
申请号：US11830812
申请日：2007-07-30
IPC分类号： G10L11/06
CPC分类号： G10L19/24 , G10L21/038
摘要： Speech encoders and methods of speech encoding are disclosed that encode inactive frames at different rates. Apparatus and methods for processing an encoded speech signal are disclosed that calculate a decoded frame based on a description of a spectral envelope over a first frequency band and the description of a spectral envelope over a second frequency band, in which the description for the first frequency band is based on information from a corresponding encoded frame and the description for the second frequency band is based on information from at least one preceding encoded frame. Calculation of the decoded frame may also be based on a description of temporal information for the second frequency band that is based on information from at least one preceding encoded frame.
摘要翻译： 公开了语音编码器和语音编码方法，其以不同的速率对无效帧进行编码。 公开了用于处理编码语音信号的设备和方法，其基于第一频带上的频谱包络的描述和在第二频带上的频谱包络的描述来计算解码的帧，其中第一频率的描述 频带基于来自相应编码帧的信息，并且针对第二频带的描述基于来自至少一个先前编码帧的信息。 解码帧的计算也可以基于基于来自至少一个先前编码帧的信息的第二频带的时间信息的描述。
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6.发明授权Systems and methods for including an identifier with a packet associated with a speech signal 有权用于将具有与语音信号相关联的分组的标识符包括在内的系统和方法公开(公告)号：US08135047B2
公开(公告)日：2012-03-13
申请号：US11677173
申请日：2007-02-21
IPC分类号： H04J3/04
CPC分类号： G10L19/167 , G10L19/24
摘要： A method for including an identifier with a packet associated with a speech signal is described. A signal is received. The signal is partitioned into a plurality of frames. A frame of the signal is encoded into a packet. A determination is made if the packet is encoded as a wideband packet or a narrowband packet. An identifier is packed in the packet based on the determination. The packet is transmitted. At least two illegal values are provided from an N-bit parameter, wherein at least one bit from the N-bit parameter is used to carry information. A number of bits from the N-bit parameter that are used to carry information is equal to log2(X), wherein X is the number of illegal values provided from the N-bit parameter.
摘要翻译： 描述了一种用于包括与语音信号相关联的分组的标识符的方法。 接收到一个信号。 信号被分割成多个帧。 信号的帧被编码成一个数据包。 如果分组被编码为宽带分组或窄带分组，则确定。 基于确定将标识符打包在分组中。 数据包被传输。 从N比特参数提供至少两个非法值，其中来自N比特参数的至少一个比特用于携带信息。 来自用于传送信息的N位参数的位数等于log2（X），其中X是从N位参数提供的非法值的数量。
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7.发明申请SYSTEMS AND METHODS FOR DYNAMIC NORMALIZATION TO REDUCE LOSS IN PRECISION FOR LOW-LEVEL SIGNALS 有权动态正规化的系统和方法，以减少低级别信号精度的损失公开(公告)号：US20080130793A1
公开(公告)日：2008-06-05
申请号：US11669407
申请日：2007-01-31
IPC分类号： H04L25/10
CPC分类号： G10L19/0204 , G10L21/00 , G10L21/0388
摘要： A normalization factor for a current frame of a signal may be determined. The normalization factor may depend on an amplitude of the current frame of the signal. The normalization factor may also depend on values of states after one or more operations were performed on a previous frame of a normalized signal. The current frame of the signal may be normalized based on the normalization factor that is determined. The states' normalization factor may be adjusted based on the normalization factor that is determined.
摘要翻译： 可以确定信号的当前帧的归一化因子。 归一化因子可以取决于信号的当前帧的幅度。 归一化因子还可以取决于对归一化信号的先前帧执行一个或多个操作之后的状态值。 信号的当前帧可以基于所确定的归一化因子来归一化。 国家的归一化因子可以根据确定的归一化因子进行调整。
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8.发明授权Systems, methods, and apparatus for wideband encoding and decoding of inactive frames 有权用于宽带编码和解码非活动帧的系统，方法和装置公开(公告)号：US08260609B2
公开(公告)日：2012-09-04
申请号：US11830812
申请日：2007-07-30
IPC分类号： G10L11/06
CPC分类号： G10L19/24 , G10L21/038
摘要： Speech encoders and methods of speech encoding are disclosed that encode inactive frames at different rates. Apparatus and methods for processing an encoded speech signal are disclosed that calculate a decoded frame based on a description of a spectral envelope over a first frequency band and the description of a spectral envelope over a second frequency band, in which the description for the first frequency band is based on information from a corresponding encoded frame and the description for the second frequency band is based on information from at least one preceding encoded frame. Calculation of the decoded frame may also be based on a description of temporal information for the second frequency band that is based on information from at least one preceding encoded frame.
摘要翻译： 公开了语音编码器和语音编码方法，其以不同的速率对无效帧进行编码。 公开了用于处理编码语音信号的设备和方法，其基于第一频带上的频谱包络的描述和在第二频带上的频谱包络的描述来计算解码的帧，其中第一频率的描述 频带基于来自相应编码帧的信息，并且针对第二频带的描述基于来自至少一个先前编码帧的信息。 解码帧的计算也可以基于基于来自至少一个先前编码帧的信息的第二频带的时间信息的描述。
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9.发明授权Systems and methods for dynamic normalization to reduce loss in precision for low-level signals 有权用于动态归一化的系统和方法，以减少低电平信号的精度损失公开(公告)号：US08005671B2
公开(公告)日：2011-08-23
申请号：US11669407
申请日：2007-01-31
IPC分类号： G10L19/00
CPC分类号： G10L19/0204 , G10L21/00 , G10L21/0388
摘要： A normalization factor for a current frame of a signal may be determined. The normalization factor may depend on an amplitude of the current frame of the signal. The normalization factor may also depend on values of states after one or more operations were performed on a previous frame of a normalized signal. The current frame of the signal may be normalized based on the normalization factor that is determined. The states' normalization factor may be adjusted based on the normalization factor that is determined.
摘要翻译： 可以确定信号的当前帧的归一化因子。 归一化因子可以取决于信号的当前帧的幅度。 归一化因子还可以取决于对归一化信号的先前帧执行一个或多个操作之后的状态值。 信号的当前帧可以基于所确定的归一化因子来归一化。 国家的归一化因子可以根据确定的归一化因子进行调整。
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10.发明申请SYSTEMS AND METHODS FOR DIMMING A FIRST PACKET ASSOCIATED WITH A FIRST BIT RATE TO A SECOND PACKET ASSOCIATED WITH A SECOND BIT RATE 有权用于将与第一比特率相关联的第一分组调制到与第二比特率相关联的第二分组的系统和方法公开(公告)号：US20080165799A1
公开(公告)日：2008-07-10
申请号：US11619798
申请日：2007-01-04
IPC分类号： H04J3/22
CPC分类号： G10L19/173 , G10L19/24
摘要： A method for dimming a first packet associated with a first bit rate to a second packet associated with a second bit rate is described. A first packet is received. The first packet is analyzed to determine a first bit rate associated with the first packet. Bits associated with at least one parameter are discarded from the first packet. Remaining bits associated with one or more parameters and a special identifier are packed into a second packet associated with a second bit rate. The second packet is transmitted.
摘要翻译： 描述了将与第一比特率相关联的第一分组调光到与第二比特率相关联的第二分组的方法。 收到第一个数据包。 分析第一分组以确定与第一分组相关联的第一比特率。 与至少一个参数相关联的比特从第一个分组被丢弃。 与一个或多个参数相关联的剩余比特和特殊标识符被打包到与第二比特率相关联的第二个分组中。 发送第二个数据包。
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