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1.发明申请
公开(公告)号：WO2007120308A2
公开(公告)日：2007-10-25
申请号：PCT/US2006/061529
申请日：2006-12-01
Inventor： MANJUNATH, Sharath , KANDHADAI, Ananthapadmanabhan A.
CPC classification number: G10L19/097
Abstract: Systems, methods, and apparatus described include waveform alignment operations in which a single set of evaluated cosines and sines is used to calculate cross-correlations of two periodic waveforms at two different phase shifts.
Abstract translation: 所描述的系统，方法和装置包括波形对准操作，其中使用单组估计的余弦和正弦来计算两个不同相移处的两个周期波形的互相关。
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公开(公告)号：WO2006107836A1
公开(公告)日：2006-10-12
申请号：PCT/US2006/012230
申请日：2006-04-03
Inventor： VOS, Koen, Bernard , KANDHADAI, Ananthapadmanabhan, A.
CPC classification number: G10L21/0208 , G10L19/0208 , G10L19/038 , G10L19/24 , G10L21/0232 , G10L21/038
Abstract: A wideband speech encoder according to one embodiment includes a filter bank having a lowband processing path and a highband processing path. The processing paths have overlapping frequency responses. A first encoder is configured to encode a speech signal produced by the lowband processing path according to a first coding methodology. A second encoder is configured to encode a speech signal produced by the highband processing path according to a second coding methodology that is different than the first coding methodology.
Abstract translation: 根据一个实施例的宽带语音编码器包括具有低带处理路径和高带处理路径的滤波器组。 处理路径具有重叠的频率响应。 第一编码器被配置为根据第一编码方法对由低带处理路径产生的语音信号进行编码。 第二编码器被配置为根据与第一编码方法不同的第二编码方法对由高带处理路径产生的语音信号进行编码。
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3.发明申请SIGNAL ENCODING USING PITCH-REGULARIZING AND NON-PITCH-REGULARIZING CODING 审中-公开使用PITCH-REGULARINGING和非定制规范编码的信号编码
公开(公告)号：WO2008157296A1
公开(公告)日：2008-12-24
申请号：PCT/US2008/066840
申请日：2008-06-13
Applicant: QUALCOMM Incorporated , RAJENDRAN, Vivek , KANDHADAI, Ananthapadmanabhan, A. , KRISHNAN, Venkatesh
CPC classification number: G10L19/18 , G10L19/022 , G10L19/08
Abstract: 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.
Abstract translation: 在音频信号的帧的音调规则化（PR）编码期间计算的时移用于在非PR编码期间对另一帧的片段进行时移。
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4.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 审中-公开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：WO2008085752A1
公开(公告)日：2008-07-17
申请号：PCT/US2007/088926
申请日：2007-12-27
Inventor： RAJENDRAN, Vivek , KANDHADAI, Ananthapadmanabhan A.
CPC classification number: G10L19/173 , G10L19/24
Abstract: 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.
Abstract translation: 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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公开(公告)号：WO2008045846A1
公开(公告)日：2008-04-17
申请号：PCT/US2007/080744
申请日：2007-10-08
Applicant: QUALCOMM Incorporated , KRISHNAN, Venkatesh , RAJENDRAN, Vivek , KANDHADAI, Ananthapadmanabhan, A.
IPC: G10L19/14
Abstract: 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.
Abstract translation: 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，噪声状信号检测器，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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Patent Agency Ranking
公开(公告)号：WO2008016942A2
公开(公告)日：2008-02-07
申请号：PCT/US2007/074895
申请日：2007-07-31
Inventor： RAJENDRAN, Vivek , KANDHADAI, Ananthapadmanabhan A.
CPC classification number: G10L19/012 , G10L2025/786
Abstract: Disclosed configurations include systems, methods, and apparatus arranged to generate a sequence of spectral tilt values that is based on inactive frames of a speech signal. For each of a plurality of inactive frames of the speech signal, a transmit decision is made according to a change calculated among at least two corresponding values of the sequence. The outcome of the transmit decision determines whether a silence description is transmitted for the corresponding inactive frame.
Abstract translation: 公开的配置包括被布置为生成基于语音信号的非活动帧的频谱倾斜值序列的系统，方法和设备。 对于语音信号的多个非活动帧中的每一个，根据在该序列的至少两个对应值中计算出的变化来作出发送判定。 发送决定的结果确定是否为相应的非活动帧发送静音描述。
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公开(公告)号：WO2006116024A2
公开(公告)日：2006-11-02
申请号：PCT/US2006/014992
申请日：2006-04-21
Inventor： VOS, Koen Bernard , KANDHADAI, Ananthapadmanabhan A.
IPC: G10L19/04
CPC classification number: G10L19/04 , G10L19/0208 , G10L21/038
Abstract: A method of signal processing according to one embodiment includes calculating an envelope of a first signal that is based on a low-frequency portion of a speech signal, calculating an envelope of a second signal that is based on a high-frequency portion of the speech signal, and calculating a plurality of gain factor values according to a time-varying relation between the envelopes of the first and second signal. The method includes attenuating, based on a variation over time of a relation between the envelopes of the first and second signals, at least one of the plurality of gain factor values. In one example, the variation over time of a relation between the envelopes is indicated by at least one distance among the plurality of gain factor values.
Abstract translation: 根据一个实施例的信号处理方法包括：计算基于语音信号的低频部分的第一信号的包络，计算基于语音的高频部分的第二信号的包络 信号，并且根据第一和第二信号的包络之间的时变关系来计算多个增益因子值。 该方法包括基于第一和第二信号的包络之间的关系随时间的变化而衰减多个增益因子值中的至少一个。 在一个示例中，信封之间的关系随时间的变化由多个增益因子值中的至少一个距离指示。
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8.发明申请SYSTEMS AND METHODS FOR DYNAMIC NORMALIZATION TO REDUCE LOSS IN PRECISION FOR LOW-LEVEL SIGNALS 审中-公开用于动态归一化的系统和方法，以减少低水平信号的精度损失
公开(公告)号：WO2008070554A2
公开(公告)日：2008-06-12
申请号：PCT/US2007/086076
申请日：2007-11-30
Inventor： KANDHADAI, Ananthapadmanabhan A. , RAJENDRAN, Vivek
IPC: G10L19/02
CPC classification number: G10L19/0204 , G10L21/00 , G10L21/0388
Abstract: 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.
Abstract translation: 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在归一化信号的先前帧上执行一个或多个操作之后的状态值。 信号的当前帧可基于所确定的归一化因子来归一化。 这些州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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9.发明申请SYSTEMS, METHODS, AND APPARATUS FOR WIDEBAND ENCODING AND DECODING OF INACTIVE FRAMES 审中-公开用于无源帧的宽带编码和解码的系统，方法和设备
公开(公告)号：WO2008016935A3
公开(公告)日：2008-06-12
申请号：PCT/US2007074886
申请日：2007-07-31
Applicant: QUALCOMM INC , RAJENDRAN VIVEK , KANDHADAI ANANTHAPADMANABHAN A
Inventor： RAJENDRAN VIVEK , KANDHADAI ANANTHAPADMANABHAN A
IPC: G10L19/14
CPC classification number: G10L19/24 , G10L21/038
Abstract: 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.
Abstract translation: 公开了语音编码器和语音编码方法，其以不同速率对非活动帧进行编码。 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第二频带上频谱包络的描述来计算解码帧，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。 解码帧的计算还可以基于对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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10.发明申请SYSTEMS AND METHODS FOR MODIFYING A WINDOW WITH A FRAME ASSOCIATED WITH AN AUDIO SIGNAL 审中-公开用与音频信号相关的框架修改窗口的系统和方法
公开(公告)号：WO2008016945A9
公开(公告)日：2008-05-29
申请号：PCT/US2007074898
申请日：2007-07-31
Applicant: QUALCOMM INC , KRISHNAN VENKATESH , KANDHADAI ANANTHAPADMANABHAN A
Inventor： KRISHNAN VENKATESH , KANDHADAI ANANTHAPADMANABHAN A
CPC classification number: G10L19/20 , G10L19/0212
Abstract: A method for modifying a window with a frame associated with an audio signal is described. A signal is received. The signal is partitioned into a plurality of frames. A determination is made if a frame within the plurality of frames is associated with a non-speech signal. A modified discrete cosine transform (MDCT) window function is applied to the frame to generate a first zero pad region and a second zero pad region if it was determined that the frame is associated with a non-speech signal. The frame is encoded. The decoder window is the same as the encoder window.
Abstract translation: 描述了用与音频信号相关联的帧修改窗口的方法。 接收到一个信号。 信号被分割成多个帧。 确定多个帧内的帧与非语音信号相关联。 如果确定该帧与非语音信号相关联，则将修改的离散余弦变换（MDCT）窗函数应用于该帧以产生第一零焊盘区域和第二零焊盘区域。 帧被编码。 解码器窗口与编码器窗口相同。
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