公开(公告)号：US5007086A

公开(公告)日：1991-04-09

申请号：US552767

申请日：1990-07-16

Applicant: Kishan Shenoi ,  Helena S. Ho

Inventor： Kishan Shenoi ,  Helena S. Ho

IPC: H04B14/04

CPC classification number: H04B14/048

Abstract: A method and apparatus for generating low level noise signals are provided. Two random numbers X.sub.1 and Y.sub.1 are first generated and bits 0-4 of the first random number X.sub.1 are extracted to produce a number X.sub.2. A number X.sub.3 is further computed by the formula: X.sub.3 =2.sup.-N (X.sub.2 .multidot.I), where N is a predetermined number and 1.ltoreq.I.gtoreq.2.sup.N -1. Bit 7 of the second random number Y.sub.1 is then extracted and combined as a sign bit with the computed number X.sub.3 to produce a sign-magnitude eight bit number W representing a sample of low level noise encoded in accordance with .mu.-law.

Abstract translation: 提供了一种用于产生低电平噪声信号的方法和装置。 首先生成两个随机数X1和Y1，并且提取第一随机数X1的位0-4产生数X2。 通过以下公式进一步计算X3：X3 = 2-N（X2×I），其中N是预定数，1 / N = 2N-1。 然后提取第二随机数Y1的位7并将其组合为具有计算出的数量X3的符号位，以产生表示根据μ-lo编码的低电平噪声样本的符号幅度八位数W。

公开(公告)号：US5151901A

公开(公告)日：1992-09-29

申请号：US506691

申请日：1990-04-09

Applicant: Kishan Shenoi ,  Patrick L. Hanagan ,  Helena S. Ho ,  Frank I. Yu

Inventor： Kishan Shenoi ,  Patrick L. Hanagan ,  Helena S. Ho ,  Frank I. Yu

IPC: H04J3/16 ,  H04J3/17

CPC classification number: H04J3/172 ,  H04J3/1647

Abstract: Apparatus for packing and unpacking DS1 trunks comprises a packing circuitry for receiving compressed data from a plurality of DS1 trunks, packing the compressed data into the space of one DS1 trunk, and providing a serial output of data for the packed DS1 trunk. An unpacking circuitry is further provided for receiving data from a packed DS1 trunk, unpacking the data into the space of a plurality of DS1 trunks, and providing an output thereof.

Abstract translation: 用于打包和拆包DS1中继线的装置包括用于从多个DS1中继接收压缩数据的打包电路，将压缩数据打包到一个DS1中继线的空间中，并提供用于打包的DS1中继线的数据的串行输出。 进一步提供一种拆包电路，用于从打包的DS1中继线接收数据，将数据拆包到多个DS1中继线的空间中，并提供其输出。

公开(公告)号：US5065395A

公开(公告)日：1991-11-12

申请号：US506678

申请日：1990-04-09

Applicant: Kishan Shenoi ,  Patrick L. Hanagan ,  Helena S. Ho ,  Frank I. Yu

Inventor： Kishan Shenoi ,  Patrick L. Hanagan ,  Helena S. Ho ,  Frank I. Yu

IPC: H04J3/17

CPC classification number: H04J3/172

Abstract: Rudimentary digital speech interpolation apparatus for compressing data on a plurality of channels is disclosed, which includes circuitry for receiving data bits and control bits for each channel. The presence of silence on each channel is determined in response to the received data bits and zero bits are allocated for any silent channel in a frame structure. In addition, circuitry also allocates x bits per channel for the data bits in an non-silent channel in the frame. At least six bits per channel are also allocated for the control bits in the frame. 4N such frames are grouped to form a multi-frame.

Abstract translation: 公开了用于在多个通道上压缩数据的基本数字语音内插装置，其包括用于接收每个通道的数据位和控制位的电路。 响应于接收到的数据位确定每个信道上的静音的存在，并且为帧结构中的任何无声信道分配零位。 此外，电路还为帧中的非静音信道中的数据比特分配每个信道的x比特。 每个通道的至少六位也分配给帧中的控制位。 4N这样的帧被分组以形成多帧。

公开(公告)号：US5280532A

公开(公告)日：1994-01-18

申请号：US506452

申请日：1990-04-09

Applicant: Kishan Shenoi ,  Patrick L. Hanagan ,  Helena S. Ho ,  Frank I. Yu

Inventor： Kishan Shenoi ,  Patrick L. Hanagan ,  Helena S. Ho ,  Frank I. Yu

IPC: H04J3/00 ,  H04J3/17 ,  G10L7/08

CPC classification number: G10L19/00 ,  H04J3/172

Abstract: An N:1 data compression system for compressing data on N DS1 trunks carrying 4N channels is disclosed. Waveform encoding circuitry is coupled to the N DS1 trunks for compressing the DS1 data into x bits and producing both encoded data and control parameters, where x.ltoreq.8. The system further includes circuitry coupled to the waveform encoding circuitry for receiving the encoded data and control parameters, performing digital speech interpolation and producing data packets which may include encoded data and control parameters that are transmittable on a single DS1 trunk.

Abstract translation: 公开了一种用于压缩携带4N信道的N个DS1中继上的数据的N：1数据压缩系统。 波形编码电路耦合到N DS1中继线，用于将DS1数据压缩为x位，并产生编码数据和控制参数，其中x <= 8。 该系统还包括耦合到波形编码电路的电路，用于接收编码数据和控制参数，执行数字语音内插并产生可包括可在单个DS1中继线上传送的编码数据和控制参数的数据分组。

公开(公告)号：US5592545A

公开(公告)日：1997-01-07

申请号：US484677

申请日：1995-06-07

Applicant: Helena S. Ho ,  Michael K. Pratt ,  Pong C. Lim ,  Thomas T. Oshidari

Inventor： Helena S. Ho ,  Michael K. Pratt ,  Pong C. Lim ,  Thomas T. Oshidari

IPC: H04Q1/54 ,  H03G3/20 ,  H03G5/00 ,  H03G5/22 ,  H04M1/60 ,  H04M3/00 ,  H04M3/40 ,  H04M9/00 ,  H04Q1/56 ,  H04M7/00

CPC classification number: H04M3/40 ,  H03G5/22 ,  H04M3/002

Abstract: A telecommunications network (120) is provided with adaptive gain control (AGC) of the voice signals in network (120). Network (120)includes an input (12) for receiving a voice signal, an output (14) for receiving the voice signal, and a coupling between input (12) and output (14) including at least one switch (124) or (126). Network (120) also includes voice enhancer (10) including power averager (18) for measuring and determining the average power of an input signal. Voice enhancer (10) also includes bass band equalizer (16) to attenuate a predetermined portion of the input signal to provide an equalized input signal. From the average power of the input signal is determined a scaling factor from a gain/attenuation look-up table (28). Voice enhancer (10) also includes output scaler (30) coupled to output (14), output scaler (30) scales the equalized input signal with the scaling factor and provides the scaled signal to output (14). Voice enhancer (10) also includes bass to treble power comparator (20) for detecting tandem enhancement and voice-band data detector (22) which cause enhancer (10) to be disabled appropriately.

Abstract translation: 电信网络（120）在网络（120）中提供语音信号的自适应增益控制（AGC）。 网络（120）包括用于接收语音信号的输入（12），用于接收语音信号的输出（14）以及输入（12）和输出（14）之间的耦合，包括至少一个开关（124）或 126）。 网络（120）还包括语音增强器（10），包括用于测量和确定输入信号的平均功率的功率平均器（18）。 语音增强器（10）还包括低音段均衡器（16），以衰减输入信号的预定部分以提供均衡的输入信号。 从输入信号的平均功率确定来自增益/衰减查找表（28）的缩放因子。 语音增强器（10）还包括耦合到输出（14）的输出缩放器（30），输出缩放器（30）用缩放因子对均衡的输入信号进行缩放，并将缩放的信号提供给输出（14）。 语音增强器（10）还包括用于检测串联增强的高音功率比较器（20）的低音和使得增强器（10）被适当地禁用的语音频带数据检测器（22）。

公开(公告)号：US5471527A

公开(公告)日：1995-11-28

申请号：US161120

申请日：1993-12-02

Applicant: Helena S. Ho ,  Michael K. Pratt ,  Pong C. Lim ,  Thomas T. Oshidari

Inventor： Helena S. Ho ,  Michael K. Pratt ,  Pong C. Lim ,  Thomas T. Oshidari

IPC: H04Q1/54 ,  H03G3/20 ,  H03G5/00 ,  H03G5/22 ,  H04M1/60 ,  H04M3/00 ,  H04M3/40 ,  H04M9/00 ,  H04Q1/56 ,  H04M1/00

CPC classification number: H04M3/40 ,  H03G5/22 ,  H04M3/002

Abstract: A telecommunications network (120) is provided with adaptive gain control (AGC) of the voice signals in network (120). Network (120) includes an input (12) for receiving a voice signal, an output (14) for receiving the voice signal, and a coupling between input (12) and output (14) including at least one switch (124) or (126). Network (120) also includes voice enhancer (10) including power averager (18) for measuring and determining the average power of an input signal. Voice enhancer (10) also includes bass band equalizer (16) to attenuate a predetermined portion of the input signal to provide an equalized input signal. From the average power of the input signal is determined a scaling factor from a gain/attenuation look-up table (28). Voice enhancer (10) also includes output scaler (30) coupled to output (14), output scaler (30) scales the equalized input signal with the scaling factor and provides the scaled signal to output (14). Voice enhancer (10) also includes bass to treble power comparator (20) for detecting tandem enhancement and voice-band data detector (22) which cause enhancer (10) to be disabled appropriately.

Abstract translation: 电信网络（120）在网络（120）中提供语音信号的自适应增益控制（AGC）。 网络（120）包括用于接收语音信号的输入（12），用于接收语音信号的输出（14）以及输入（12）和输出（14）之间的耦合，包括至少一个开关（124）或 126）。 网络（120）还包括语音增强器（10），包括用于测量和确定输入信号的平均功率的功率平均器（18）。 语音增强器（10）还包括低音段均衡器（16），以衰减输入信号的预定部分以提供均衡的输入信号。 从输入信号的平均功率确定来自增益/衰减查找表（28）的缩放因子。 语音增强器（10）还包括耦合到输出（14）的输出缩放器（30），输出缩放器（30）用缩放因子对均衡的输入信号进行缩放，并将缩放的信号提供给输出（14）。 语音增强器（10）还包括用于检测串联增强的高音功率比较器（20）的低音和使得增强器（10）被适当地禁用的语音频带数据检测器（22）。