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    • 3. 发明授权
    • Method to determine the excitation pulse positions within a speech frame
    • 确定语音帧内的激励脉冲位置的方法
    • US6064956A
    • 2000-05-16
    • US930951
    • 1998-01-05
    • Jonas Svedberg
    • Jonas Svedberg
    • G10L19/10
    • G10L19/10
    • A determination is made of the positions within a speech frame for a given number of excitation pulses in a linear predictive speech encoder. A combination of two known methods is used. The positions of the excitation pulses are calculated in a number of calculation stages according to the first known method. The positions of the excitation pulses are then calculated in a number of calculation stages in accordance with the second method to obtain one of a number of pulse placements. Each calculation according to the second method begins at a starting point from one of a number of positions calculated in accordance with the first method. The proportion between the number of calculation stages in the first method and the second method is chosen so as to obtain the least calculation complexity for a certain given speech quality.
    • PCT No.PCT / SE96 / 00465 Sec。 371日期:1998年1月5日 102(e)日期1998年1月5日PCT提交1996年4月10日PCT公布。 第WO96 / 32712号公报 日期1996年10月17日对线性预测语音编码器中给定数量的激励脉冲的语音帧内的位置进行确定。 使用两种已知方法的组合。 根据第一已知方法,在多个计算阶段中计算激励脉冲的位置。 然后根据第二种方法在多个计算阶段中计算激励脉冲的位置,以获得多个脉冲放置中的一个。 根据第二种方法的每个计算都是从根据第一种方法计算出的多个位置之一开始的起始点。 选择第一种方法中的计算级数与第二种方法之间的比例,以便为某种给定的语音质量获得最小的计算复杂度。
    • 4. 发明授权
    • Efficient speech stream conversion
    • 有效的语音流转换
    • US08543388B2
    • 2013-09-24
    • US12095709
    • 2005-11-30
    • Nicklas SandgrenJonas Svedberg
    • Nicklas SandgrenJonas Svedberg
    • G10L19/00
    • G10L19/012G10L19/173
    • Speech frames of a first speech coding scheme are utilized as speech frames of a second speech coding scheme, where the speech coding schemes use similar core compression schemes for the speech frames, preferably bit stream compatible. An occurrence of a state mismatch in an energy parameter between the first speech coding scheme and the second speech coding scheme is identified, preferably either by determining an occurrence of a predetermined speech evolution, such as a speech type transition, e.g. an onset of speech following a period of speech inactivity, or by tentative decoding of the energy parameter in the two encoding schemes followed by a comparison. Subsequently, the energy parameter in at least one frame of the second speech coding scheme following the occurrence of the state mismatch is adjusted. The present invention also presents transcoders and communications systems providing such transcoding functionality.
    • 第一语音编码方案的语音帧被用作第二语音编码方案的语音帧,其中语音编码方案对于语音帧使用类似的核心压缩方案,优选地与比特流兼容。 识别出第一语音编码方案和第二语音编码方案之间的能量参数中的状态失配的发生,优选地通过确定诸如语音类型转换的预定语音演进的发生,例如, 在语音不活动的时期之后的语音开始,或者通过对两个编码方案中的能量参数的暂时解码进行比较。 随后,调整在发生状态失配之后的第二语音编码方案的至少一帧中的能量参数。 本发明还提供了提供这种代码转换功能的代码转换器和通信系统。
    • 6. 发明申请
    • Interoperability for wireless user devices with different speech processing formats
    • 具有不同语音处理格式的无线用户设备的互操作性
    • US20060034260A1
    • 2006-02-16
    • US11197768
    • 2005-08-05
    • Jonas SvedbergPer Synnergren
    • Jonas SvedbergPer Synnergren
    • H04J3/22H04Q7/24H04L12/66H04J3/16
    • H04W4/10G10L19/173H04W4/18H04W76/45H04W88/181
    • Interoperability is achieved between wireless user communication devices that have different speech processing formats and/or attributes. A first wireless user communication device includes a primary speech codec that encodes a first speech message using a first speech encoding format. The encoded speech is then sent to a second wireless user communications device that includes a primary speech codec supporting a second speech encoding format. The first user device receives from the second user device a second speech message encoded using the second speech encoding format. The second speech message is then decoded by the first user device using a second speech decoder supporting decoding of the second speech encoding format. But the first communication device does not support speech encoding using the second speech encoding format—regardless of whether the first communication device includes or does not includes an encoder for encoding speech using the first speech encoding format.
    • 在具有不同语音处理格式和/或属性的无线用户通信设备之间实现互操作性。 第一无线用户通信设备包括使用第一语音编码格式对第一语音消息进行编码的主要语音编解码器。 然后将经编码的语音发送到包括支持第二语音编码格式的主要语音编解码器的第二无线用户通信设备。 第一用户设备从第二用户设备接收使用第二语音编码格式编码的第二语音消息。 第二语音消息然后由支持第二语音编码格式解码的第二语音解码器由第一用户设备解码。 但是第一通信设备不支持使用第二语音编码格式的语音编码,而不管第一通信设备是否包括或不包括使用第一语音编码格式来编码语音的编码器。
    • 7. 发明申请
    • Method and apparatus for increasing perceived interactivity in communications systems
    • 增加通信系统中感知交互性的方法和装置
    • US20050227657A1
    • 2005-10-13
    • US10819376
    • 2004-04-07
    • Tomas FrankkilaJonas SvedbergKrister SvanbroBjorn SvenssonTomas Jonsson
    • Tomas FrankkilaJonas SvedbergKrister SvanbroBjorn SvenssonTomas Jonsson
    • G10L13/06H04L12/56H04Q7/38
    • G10L21/04
    • Perceived interactivity in user communications is achieved by reducing a perceived delay switching the active transmitter in the communication without having to reduce actual transmission and setup delays associated with a communication exchange. A sound signal is identified in the user communication. The sound signal is analyzed to identify or estimate a sound signal segment. The sound signal segment is preferably (though not necessarily) located at the beginning or the end of the sound signal. The sound signal segment may be selected directly from the sound signal itself, from a modified version of the sound signal, or from a signal associated with the sound signal. A determination is made that a length or duration of the sound signal segment should be or can be modified. One or more modifications for the sound signal segment are determined and are provided to one or more processing units to perform the modification(s).
    • 用户通信中的感知交互性通过减少在通信中切换有源发射机的感知延迟而不用减少与通信交换相关联的实际传输和建立延迟来实现。 在用户通信中识别声音信号。 分析声音信号以识别或估计声音信号段。 声音信号段优选地(尽管不一定)位于声音信号的开始或结束处。 可以从声音信号本身,声音信号的修改版本或与声音信号相关联的信号直接选择声音信号段。 确定声音信号段的长度或持续时间应该是或可以被修改。 确定声音信号段的一个或多个修改,并将其提供给一个或多个处理单元以执行修改。