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    • 2. 发明申请
    • SPEECH CODING
    • 语音编码
    • WO1992011627A2
    • 1992-07-09
    • PCT/GB1991002291
    • 1991-12-20
    • BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANYFREEMAN, Daniel, KennethWONG, Wing-Tak-KennethDAVIS, Andrew, Gordon
    • BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY
    • G10L09/14
    • G10L19/083G10L19/12G10L2019/0013G10L2019/0014
    • In a codebook excited speech coder, speech is analysed (200) to produce coefficients of a synthesis filter and (203, 204) the parameters of a long-term prediction filter (LTP) and a codeword indication one of a set of excitations (stored in 205), the results being transmitted to a receiver where they can be used to resynthesise the speech. The LTP and excitation analysis involve computation (224) of impulse response products (stored in 301, 302). Computation of new products is performed by adding additional terms to products already formed. Multiplication of these products by excitation terms is performed using a pointer table (303) storing precalculated addresses of locations in the store (301, 302). If some excitations are shifted versions of others, some addressed can be obtained by modifying other addresses. The LTP analysis (203) may include selection between a simple delay prediction and a prediction consisting of the sum of two differently delayed terms, to provide improved predictor delay resolution.
    • 在由“字典”激励的语音编码器中,语音信号被分析(200)以产生合成滤波器的系数和(203,204)长期预测滤波器(LTP)的参数。 )和构成一组激励(在205处存储)的激励之一的码字指示,结果被发送到接收机,在那里它们可以用于语音信号的新合成。 LTP和激励分析包括脉冲响应产品(存储在301和302)的计算(224)。 新产品的计算方法是在已形成的产品中增加附加条款。 通过激励项乘以这些乘积是使用存储先前计算的存储位置地址(301,302)的指示表(303)来执行的。 当某些激励是其他激励的偏移版本时,某些地址可以通过修改其他地址来获得。 LTP分析(203)可以包括在简单延迟预测和包括具有不同延迟的两个项的相加之和的预测之间的选择,这提供了预测器延迟的改善的分辨率。
    • 6. 发明申请
    • PROCESS MANAGEMENT SYSTEM
    • 过程管理系统
    • WO1998007282A2
    • 1998-02-19
    • PCT/GB1997002157
    • 1997-08-12
    • BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANYOWEN, Martin, JohnPATEL, SatyaSTRULO, BenCORLEY, Stephen, Leslie
    • BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY
    • H04Q03/00
    • H04Q3/0041H04M3/4217H04Q2213/13103H04Q2213/13109H04Q2213/13345H04Q2213/13349
    • In a connection management system for setting up connections in a communications network, run-time negotiation is carried out to avoid feature interaction. Users of the network are provided with user agents (107) (intelligent software) which have access to user profiles. When a calling user wants to set up a particular connection configuration, which may involve service features such as ring back later on busy, their user agent (107) sends a connection configuration proposal to the user agent (107) for a called user. The two user agents (107) then negotiate to establish a mutually acceptable connection configuration, if one is available. The negotiation is based on alternative connection configurations stored in order of preference in the respective user profiles. These are proposed and counter-proposed by the user agents (107) in descending preference order until the mutually acceptable configuration is reached or the connection fails. Preferred embodiments include connection scheduling capability.
    • 在用于在通信网络中建立连接的连接管理系统中,执行运行时协商以避免特征交互。 向网络用户提供可访问用户简档的用户代理(107)(智能软件)。 当呼叫用户想要建立特定的连接配置时,其可能涉及服务特征,例如在忙时响铃,其用户代理(107)向被叫用户的用户代理(107)发送连接配置建议。 然后,两个用户代理(107)协商建立相互可接受的连接配置(如果有的话)。 协商是基于在各个用户简档中以优先顺序存储的替代连接配置。 这些是由用户代理(107)以优先顺序降序提出和反提出的,直到达到相互接受的配置或者连接失败。 优选实施例包括连接调度能力。