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1. 发明授权

US5641927A Autokeying for musical accompaniment playing apparatus 失效
标题翻译：音乐伴奏播放装置的自动键
公开(公告)号：US5641927A
公开(公告)日：1997-06-24
申请号：US423184
申请日：1995-04-18
申请人： Basavaraj I. Pawate , Rabin Deka , Wallace Anderson , Wai-Ming Lai , Vishu R. Viswanathan
发明人： Basavaraj I. Pawate , Rabin Deka , Wallace Anderson , Wai-Ming Lai , Vishu R. Viswanathan
IPC分类号： G10L21/04 , G10H1/043 , G10H1/36 , G10H3/12 , G10K15/04 , G09B5/04 , G10H1/00
CPC分类号： G10H1/366 , G10H3/125
摘要： A Karaoke (10) apparatus with autokeying is provided by measuring the average pitch (28) of the singer or user over a predetermined time period, comparing (29) the pitch of the singer or user voice to that of a reference pitch to provide a signal representing mismatch and changing the pitch (31) of the background music to match that of the singer or user.
摘要翻译：通过在预定时间段内测量歌手或用户的平均音调（28）来提供具有自动键盘的卡拉OK（10）装置，比较（29）歌手或用户声音的音调与参考音调的音调，以提供信号表示不匹配并且改变背景音乐的音高（31）以匹配歌手或用户的音调。

2. 发明授权

US6111181A Synthesis of percussion musical instrument sounds 失效
标题翻译：敲击乐器合成声音
公开(公告)号：US6111181A
公开(公告)日：2000-08-29
申请号：US72400
申请日：1998-05-04
申请人： Michael W. Macon , Wai-Ming Lai , Alan V. McCree , Vishu R. Viswanathan
发明人： Michael W. Macon , Wai-Ming Lai , Alan V. McCree , Vishu R. Viswanathan
IPC分类号： G10H1/12 , G10H7/00
CPC分类号： G10H1/125 , G10H7/00 , G10H2230/255 , G10H2250/065 , G10H2250/071 , G10H2250/075 , G10H2250/235 , G10H2250/601
摘要： A synthesis of percussion musical instruments sounds is provided using a microprocessor (17) that implements an all pole lattice filter and applying either a single impulse signal to the filter or N samples of an excitation signal sequence to the filter by a memory (19). The coefficients of the filter are determined by storing digital samples (501) of desired musical note from a desired percussion instrument, generating a Fourier transform to get a spectrum (502), picking the peaks of the spectrum (503) to select the most prominent components in the spectrum and determining wanted frequencies for decaying sine waves and for the frequencies finding the time envelope and estimating therefrom the pole radius.
摘要翻译：使用实现全极点格子的微处理器（17）提供打击乐器声音的合成，并且通过存储器（19）向滤波器施加单个脉冲信号或向滤波器施加激励信号序列的N个样本。通过从期望的打击乐器存储所需音符的数字样本（501）来确定滤波器的系数，产生傅立叶变换以获得频谱（502），拾取频谱的峰值（503）以选择最突出的确定频谱中的分量，并确定衰减正弦波的有用频率以及找到时间包络的频率，并从其估计极半径。

3. 发明授权

US06418406B1 Synthesis of high-pitched sounds 失效
标题翻译：合成高音的声音
公开(公告)号：US06418406B1
公开(公告)日：2002-07-09
申请号：US08702422
申请日：1996-08-14
申请人： Vishu R. Viswanathan , Wai-Ming Lai
发明人： Vishu R. Viswanathan , Wai-Ming Lai
IPC分类号： G10L1900
CPC分类号： G10L13/02
摘要： An improvement in the synthesis of high-pitched voices and sounds is provided by downshifting the pitch 11 of the original input voice or sound before LPC analysis 13. This downshifting of the pitch is provided by upsampling 21, low pass filtering 22, downsampling 23, and performing time scale modification 24.
摘要翻译：通过在LPC分析13之前降低原始输入声音或声音的音调11来提供高音声音和声音的合成的改进。该音调的降档由上采样21，低通滤波22，下采样23，并执行时间刻度修改24。

4. 发明申请

US20120259624A1 SYSTEMS, PROCESSES AND INTEGRATED CIRCUITS FOR RATE AND/OR DIVERSITY ADAPTATION FOR PACKET COMMUNICATIONS 有权
标题翻译：用于分组通信的速率和/或多样性适应的系统，过程和集成电路
公开(公告)号：US20120259624A1
公开(公告)日：2012-10-11
申请号：US13493548
申请日：2012-06-11
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： G10L19/04
CPC分类号： G10L13/02 , G10L19/04 , H04L29/06027 , H04L65/608 , H04L65/80 , H04W88/02
摘要： Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
摘要翻译：以大于零千比特/秒的源速率发送实时信息的分组，并且时间或路径或组合的时间/路径分集速率最初为零千比特每秒。这导致服务质量QoS，可选地在发送者或接收者处测量。当QoS处于可接受阈值的不可接受的一侧时，发送方以增加的速率发送分集分组。降低或维持整体传输速率的同时提高分集速度是新的。基于CELP的多描述数据分割在一个分组中发送基本或重要信息加上固定激励的子集，并将另一个分组中的基本或重要信息加上固定激励的互补子集发送。当接收到两个数据包时，仅接收到两个数据包中的一个并且更好的质量，重建会产生可接受的质量。重建提供单个和多个丢失的数据包。

5. 发明授权

US07653045B2 Reconstruction excitation with LPC parameters and long term prediction lags 有权
标题翻译： LPC参数重建激励与长期预测滞后
公开(公告)号：US07653045B2
公开(公告)日：2010-01-26
申请号：US10885911
申请日：2004-07-06
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： H04L12/66
CPC分类号： H04L47/34 , H04B7/06 , H04B7/0671 , H04L1/0007 , H04L1/0018 , H04L29/06027 , H04L47/10 , H04L47/11 , H04L47/2416 , H04L47/283 , H04L47/29 , H04L65/602 , H04L65/80 , H04W28/08 , H04W28/22 , H04W28/24 , H04W84/00
摘要： A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n−1)′, [Lost Packet], P(n+2)P(n+1)′, and P(n+3)P(n+2)′, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
摘要翻译：分组网络设备上的媒体提供网络接口，语音传感器以及将语音传感器耦合到网络接口的至少一个集成电路组件。所述至少一个集成电路组件通过分组传输提供媒体，并保持限定具有初级阶段和次级阶段的分组流的重建的比特。次级具有一个或多个线性预测编码参数，长期预测滞后，奇偶校验以及自适应和固定码本增益。分组流具有单个分组丢失的实例，并且重构包括接收由P（n）P（n-1）'，[丢包]，P（n + 2）P（n + 1）表示的分组序列， '和P（n + 3）P（n + 2）'，获得来自次级信息的线性预测编码参数，长期预测滞后，奇偶校验和自适应和固定码本增益中的一个或多个的信息，以及使用所接收的所述分组序列来执行激励重构。

6. 发明授权

US06765904B1 Packet networks 有权
标题翻译：分组网络
公开(公告)号：US06765904B1
公开(公告)日：2004-07-20
申请号：US09461159
申请日：1999-12-14
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： H04L1256
CPC分类号： H04L47/34 , H04B7/06 , H04B7/0671 , H04L1/0007 , H04L1/0018 , H04L29/06027 , H04L47/10 , H04L47/11 , H04L47/2416 , H04L47/283 , H04L47/29 , H04L65/602 , H04L65/80 , H04W28/08 , H04W28/22 , H04W28/24 , H04W84/00
摘要： A process (111,101) of sending packets of real-time information at a sender (311) includes steps of initially generating at the sender the packets of real-time information with a source rate (s11) greater than zero kilobits per second, and a time or path or combined time/path diversity rate (d11), the amount of diversity (d11) initially being at least zero kilobits per second. The process sends the packets, thereby resulting in a quality of service QoS, and optionally obtains at the sender (311) a measure of the QoS. Rate/diversity adaptation decision may be performed at receiver (361′) instead. Another step compares the QoS with a threshold of acceptability (Th1), and when the QoS is on an unacceptable side of said threshold (Th1) increases the diversity rate (d11 to d22) and sends not only additional ones of the packets of real-time information but also sends diversity packets at the diversity rate as increased (d22). Increasing the diversity rate (d11 to d22) while either reducing or keeping unchanged the overall transmission rate (sij+dij) is an important new improvement in even solely-time-diversity embodiments. In another form of the invention a single-chip integrated circuit includes a processor circuit (1511), and a rate-and-diversity control (1561). Here again, the diversity is contemplated to be time diversity, path diversity, and combined time/path diversity in various embodiments. Other embodiments disclosed encompass other processes, improved packets and packet ensembles, integrated circuits, chipsets, computer add-in cards, information storage articles, systems, computers, gateways, routers, cellular telephone handsets, wireless base stations, appliances, and packet networks, and other forms as claimed.
摘要翻译：在发送器（311）发送实时信息分组的过程（111,101）包括以下步骤：首先在发送器处产生具有大于零千比特/秒的源速率（s11）的实时信息分组，以及时间或路径或组合时间/路径分集速率（d11），分集量（d11）最初至少为零千比特每秒。该过程发送分组，从而导致服务质量QoS，并且可选地在发送方（311）获得QoS的度量。可以在接收机（361'）处执行速率/分集适配决定。另一步骤将QoS与可接受性阈值（Th1）进行比较，并且当QoS处于所述阈值（Th1）的不可接受侧时，增加分集速率（d11至d22），并且不仅发送实际数据包中的附加数据，时间信息，但也以多样化速率发送分集数据包（d22）。在降低或保持整体传输速率（sij + dij）的同时，增加分集率（d11至d22）是即使单时间多样性实施例中的重要新进展。在本发明的另一种形式中，单片集成电路包括处理器电路（1511）和速率分集控制（1561）。再次，在各种实施例中，分集被认为是时间分集，路径分集和组合的时间/路径分集。所公开的其他实施例包括其他过程，改进的分组和分组集合，集成电路，芯片组，计算机附加卡，信息存储产品，系统，计算机，网关，路由器，蜂窝电话手机，无线基站，设备和分组网络，和所要求的其他形式。

7. 发明授权

US5806027A Variable framerate parameter encoding 失效
标题翻译：可变帧率参数编码
公开(公告)号：US5806027A
公开(公告)日：1998-09-08
申请号：US724268
申请日：1996-09-19
申请人： E. Bryan George , Alan V. McCree , Vishu R. Viswanathan
发明人： E. Bryan George , Alan V. McCree , Vishu R. Viswanathan
IPC分类号： G10L15/12 , G10L19/00 , G10L19/06 , G10L9/00
CPC分类号： G10L19/07 , G10L19/0018 , G10L15/12
摘要： A novel approach to parameter encoding is presented which improves coding efficiency and performance by exploiting the variable rate nature of certain classes of signals. This is achieved using an interpolative variable frame-rate breakpointing scheme referred to as adaptive frame selection (AFS). In the approach described in this report, frame selection is achieved using a recursive dynamic programming algorithm; the resulting parameter encoding system is referred to as adaptive frame selection using dynamic programming (AFS/DP). The AFS/DP algorithm determines optimal breakpoint locations in the context of parameter encoding using an arbitrary objective performance measure, and operates in a fixed bit-rate, fixed-delay context with low computational requirements. When applied to the problem of low bit-rate coding of speech spectral and gain parameters, the AFS/DP algorithm is capable of improving the perceptual quality of coded speech and robustness to quantization errors over fixed frame-rate approaches.
摘要翻译：提出了一种新颖的参数编码方法，它通过利用某些信号类别的可变速率特性来提高编码效率和性能。这是使用称为自适应帧选择（AFS）的内插可变帧速率断点方案来实现的。在本报告中描述的方法中，使用递归动态规划算法实现帧选择; 所得到的参数编码系统被称为使用动态规划（AFS / DP）的自适应帧选择。 AFS / DP算法在使用任意目标性能测量的参数编码的上下文中确定最佳断点位置，并且在具有低计算要求的固定比特率，固定延迟上下文中操作。当应用于语音频谱和增益参数的低比特率编码的问题时，AFS / DP算法能够在固定帧速率方法上提高编码语音的感知质量和对量化误差的鲁棒性。

8. 发明授权

US5706395A Adaptive weiner filtering using a dynamic suppression factor 失效
标题翻译：使用动态抑制因子的自适应Weiner滤波
公开(公告)号：US5706395A
公开(公告)日：1998-01-06
申请号：US425125
申请日：1995-04-19
申请人： Levent M. Arslan , Alan V. McCree , Vishu R. Viswanathan
发明人： Levent M. Arslan , Alan V. McCree , Vishu R. Viswanathan
IPC分类号： G10L21/02 , G10L3/02
CPC分类号： G10L21/0208
摘要： An acoustic noise suppression filter including attenuation filtering with a noise suppression factor depending upon the ratio of estimated noise energy of a frame divided by estimated signal energy.
摘要翻译：声噪声抑制滤波器包括具有噪声抑制因子的衰减滤波，这取决于帧的估计噪声能量除以估计信号能量的比率。

9. 发明授权

US08456991B2 Source and diversity rate less than a first transmission rate 有权
标题翻译：源和分集率小于第一传输速率
公开(公告)号：US08456991B2
公开(公告)日：2013-06-04
申请号：US12555485
申请日：2009-09-08
申请人： Vishu R. Viswanathan , Alan V. McCree , Krishnasamy Anandakumar
发明人： Vishu R. Viswanathan , Alan V. McCree , Krishnasamy Anandakumar
IPC分类号： H04J1/16 , H04L12/66 , H04L12/28 , H04L1/14
CPC分类号： H04L43/0829 , H04B7/06 , H04L29/06027 , H04L65/608 , H04L65/80 , H04W24/00 , H04W24/08 , H04W28/22 , H04W28/24
摘要： Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
摘要翻译：以大于零千比特/秒的源速率发送实时信息的分组，并且时间或路径或组合的时间/路径分集速率最初为零千比特每秒。这导致服务质量QoS，可选地在发送者或接收者处测量。当QoS处于可接受阈值的不可接受的一侧时，发送方以增加的速率发送分集分组。降低或维持整体传输速率的同时提高分集速度是新的。基于CELP的多描述数据分割在一个分组中发送基本或重要信息加上固定激励的子集，并将另一个分组中的基本或重要信息加上固定激励的互补子集发送。当接收到两个数据包时，仅接收到两个数据包中的一个并且更好的质量，重建将产生可接受的质量。重建提供单个和多个丢失的数据包。

10. 发明申请

US20120008645A1 SYSTEMS, PROCESSES AND INTEGRATED CIRCUITS FOR RATE AND/OR DIVERSITY ADAPTATION FOR PACKET COMMUNICATIONS 审中-公开
标题翻译：用于分组通信的速率和/或多样性适应的系统，过程和集成电路
公开(公告)号：US20120008645A1
公开(公告)日：2012-01-12
申请号：US13240512
申请日：2011-09-22
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： H04L12/00
CPC分类号： H04L47/34 , H04B7/06 , H04B7/0671 , H04L1/0007 , H04L1/0018 , H04L29/06027 , H04L47/10 , H04L47/11 , H04L47/2416 , H04L47/283 , H04L47/29 , H04L65/602 , H04L65/80 , H04W28/08 , H04W28/22 , H04W28/24 , H04W84/00
摘要： A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n−1)′, [Lost Packet], P(n+2)P(n+1)′, and P(n+3)P(n+2)′, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
摘要翻译：分组网络设备上的媒体提供网络接口，语音传感器以及将语音传感器耦合到网络接口的至少一个集成电路组件。所述至少一个集成电路组件通过分组传输提供媒体，并保持限定具有初级阶段和次级阶段的分组流的重建的比特。次级具有一个或多个线性预测编码参数，长期预测滞后，奇偶校验以及自适应和固定码本增益。分组流具有单个分组丢失的实例，并且重构包括接收由P（n）P（n-1）'，[丢包]，P（n + 2）P（n + 1）表示的分组序列， '和P（n + 3）P（n + 2）'，获得来自次级信息的线性预测编码参数，长期预测滞后，奇偶校验和自适应和固定码本增益中的一个或多个信息，以及使用所接收的所述分组序列来执行激励重构。

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