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1. 发明授权

US5199029A Circuit arrangement for establishing conference connections 失效
标题翻译：建立会议连接的电路布置
公开(公告)号：US5199029A
公开(公告)日：1993-03-30
申请号：US618275
申请日：1990-11-26
申请人： Peter Hessler , Manfred Schmidt , Bernd Selbach
发明人： Peter Hessler , Manfred Schmidt , Bernd Selbach
IPC分类号： H04M3/56
CPC分类号： H04M3/561 , H04M3/245
摘要： A circuit arrangement for establishing conference connections comprising conference units is described, which units are linked to form a loop (L). In this loop (L) sum codewords consisting of sample values of the signals of all participants in a conference are transmitted from one conference unit to the next. In each conference unit a sum codeword is updated so that the sample value of a conference signal from the previous loop travel is replaced by the current sample value. In order to enable the monotoring of a travel of sum codewords through the loop with a circuit arrangement of this type and in order to have the sum codewords pass through the loop in a predetermined brief period of time without a necessity for a synchronization of individual processing modules of the conference units, the function of one or more conference units is taken over by a programmed processor (P1 to P4). The exchange of data between the conferees and the processors is controlled by means of an interface circuit (PO). In addition to the sum codewords also test words consisting of transformed sum codewords pass through the loop (L). Sum codewords and test words are buffered in input memories (ES1 to ES4) during their travel through the loop until the associated processor (P1 to P4) has finished the program modules for which the sum codeword or test word respectively is used. These modules are programmed in the individual processors (P1 to P4) in a time offset order.
摘要翻译：描述用于建立包括会议单元的会议连接的电路装置，哪些单元被链接以形成一个循环（L）。在该循环（L）中，由会议单元中的所有参与者的信号的样本值构成的和码字从一个会议单元发送到下一个会议单元。在每个会议单元中，更新总代码字，使得来自前一循环行程的会议信号的采样值被当前采样值替换。为了使得能够通过具有这种类型的电路装置的环路对码字的行程进行单调，并且为了使得和码字以预定的短时间段通过循环，而不需要单独处理的同步会议单元的模块，一个或多个会议单元的功能由编程处理器（P1至P4）接管。参与者和处理器之间的数据交换通过接口电路（PO）来控制。除了代码字之外，还包括由变换的和码字组成的测试字通过循环（L）。累加码字和测试字在其通过循环的行进期间被缓冲在输入存储器（ES1至ES4）中，直到相关联的处理器（P1至P4）已经完成了使用和码字或测试字的程序模块。这些模块以单个处理器（P1至P4）的时间偏移顺序编程。

2. 发明授权

US5172393A Circuit arrangement for channel-specific processing of a multi-channel input signal 失效
标题翻译：多通道输入信号通道特定处理的电路布置
公开(公告)号：US5172393A
公开(公告)日：1992-12-15
申请号：US590399
申请日：1990-09-28
申请人： Peter Hessler , Manfred Schmidt , Bernd Selbach , Michael Behrens
发明人： Peter Hessler , Manfred Schmidt , Bernd Selbach , Michael Behrens
IPC分类号： H04J3/04 , H03M7/00 , H03M7/30 , H03M7/32 , H03M9/00 , H04B14/04
CPC分类号： H04B14/04
摘要： A circuit arrangement for channel-specific processing of a multi-channel input signal which may consist of two types of encoded signals, a first type wherein all channel signals are encoded by a bit-oriented method (e.g., delta modulation) and a second type wherein all channel signals are encoded by a character-oriented method (e.g., PCM). An interface process (SSP), to which the input signal is applied, is coupled to a bidirectional interface (BIS) for signals of the first type and which is controllable by means of write and read addresses, and is also coupled to at least two such bidirectionally controllable interfaces (BI0, BI1, . . . BI7) for signals of the second type. The latter interfaces are respectively coupled to respective transcoder processors (AP0, AP1, . . . AP7). One or more data outputs of the interface (BIS) for signals of the first type are respectively coupled to respective ones of the transcoder processors (AP0, AP1, . . . AP7). The transcoded channel signals produced by such processors are transmitted via the interfaces (BIS, BI0, . . . BI7) to the interface processor (SSP), which combines them into a multi-channel output signal.
摘要翻译：一种用于通道特定处理多通道输入信号的电路装置，其可由两种类型的编码信号组成，第一种类型，其中所有信道信号由面向比特的方法（例如增量调制）编码，第二类型其中所有信道信号由字符取向方法（例如，PCM）编码。将输入信号应用到的接口处理（SSP）耦合到用于第一类型的信号的双向接口（BIS），并且其可通过写入和读取地址来控制，并且还耦合到至少两个这种双向可控接口（BI0，BI1，...，BI7）用于第二类型的信号。后面的接口分别耦合到相应的代码转换器处理器（AP0，AP1，...，AP7）。用于第一类型的信号的接口（BIS）的一个或多个数据输出分别耦合到代码转换器处理器（AP0，AP1，...，AP7）中的相应代码转换器处理器。由这些处理器产生的代码转换的信道信号经由接口（BIS，BI0，...，BI7）发送到接口处理器（SSP），它将它们组合成多通道输出信号。

3. 发明授权

US4700394A Method of recognizing speech pauses 失效
标题翻译：识别语音暂停的方法
公开(公告)号：US4700394A
公开(公告)日：1987-10-13
申请号：US552998
申请日：1983-11-17
申请人： Bernd Selbach , Peter Vary
发明人： Bernd Selbach , Peter Vary
IPC分类号： G10L25/78 , G10L25/87 , G10L5/00
CPC分类号： G10L25/87 , G10L25/78 , G10L2025/786
摘要： Method of recognizing pauses in a speech signal when a slowly varying noise signal is superposed on the speech signal. For the purpose of pause recognition so-called short-time mean values connected with a clock pulse are continuously determined from the samples of the disturbed speech signal, which short time mean values are a measure of the average power of approximately 100 ms long sections of the disturbed speech signals. The sequence of these short-time mean values is then smoothed by linear filtration or by means of a median filter. In parallel with the smoothing operation an estimate for the noise signal power averaged over a few seconds is taken from the sequence of short-time mean values. If the smoothed short-time mean value is once or several times less than a threshold which is proportional to the above-mentioned estimate, then it is decided that there is a speech pause.
摘要翻译：当缓慢变化的噪声信号叠加在语音信号上时识别语音信号中的暂停的方法。为了暂停识别，与受干扰的语音信号的样本连续地确定与时钟脉冲连接的所谓的短时平均值，哪个短时间平均值是大约100ms长的部分的平均功率的量度受扰的语音信号。然后通过线性过滤或中值滤波器平滑这些短时平均值的序列。与平滑操作并行，从短时平均值的序列中可以得出平均数秒的噪声信号功率的估计。如果平滑的短时间平均值比与上述估计成正比的阈值小一或几倍，则判定存在语音暂停。

4. 发明授权

US4682361A Method of recognizing speech pauses 失效
标题翻译：识别语音暂停的方法
公开(公告)号：US4682361A
公开(公告)日：1987-07-21
申请号：US552994
申请日：1983-11-17
申请人： Bernd Selbach , Peter Vary
发明人： Bernd Selbach , Peter Vary
IPC分类号： G10L15/02 , G10L25/78 , G10L5/00
CPC分类号： G10L25/78
摘要： A method of recognizing speech pauses in a speech signal even when the signal is disturbed by a slowly varying noise signal superposed thereon. Mean values which are an approximate measure of the average power of successive sections of the disturbed signal are determined from the short-time Fourier coefficients of the disturbed speech signal. The sequential short-time mean values are then smoothed by a linear digital filter or a median filter. An estimate of the noise signal power averaged over a few seconds is also recovered from the sequence of short-time mean values. A speech pause is signified when the smoothed short-time mean value (output of GL) more than once falls to a threshold which is proportional to the estimated noise power (output of PA).
摘要翻译：即使当信号被叠加在其上的缓慢变化的噪声信号干扰时，语音信号中的语音暂停的方法也是如此。作为干扰信号的连续部分的平均功率的近似度量的平均值由干扰的语音信号的短时傅里叶系数确定。顺序的短时平均值然后由线性数字滤波器或中值滤波器平滑。几秒钟内平均噪声信号功率的估计也从短时平均值序列中恢复。当平滑的短时平均值（GL的输出）多次下降到与估计的噪声功率（PA的输出）成比例的阈值时，表示语音暂停。

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