公开(公告)号：US08723700B2

公开(公告)日：2014-05-13

申请号：US13325993

申请日：2011-12-14

申请人： Fuwei Ma ,  Dejun Zhang ,  Minjie Xie ,  Qing Zhang

发明人： Fuwei Ma ,  Dejun Zhang ,  Minjie Xie ,  Qing Zhang

IPC分类号： H03M7/34

CPC分类号： G10L19/113 ,  G10L19/002 ,  G10L19/04 ,  G10L19/10 ,  G10L19/12 ,  G10L2019/0016 ,  H03M7/30 ,  H03M7/40 ,  H03M7/4068

摘要： The present invention discloses a method and a device for pulse encoding, and a method and a device for pulse decoding. The method for pulse encoding includes: calculating an index value of an input pulse; selecting an adjustment threshold value according to the number of pulses, and comparing the index value of the pulse with the adjustment threshold value; if the index value is smaller than the adjustment threshold value, adopting the first number of encoding bits to encode the index value, if the index value is not smaller than the adjustment threshold value, adopting the second number of encoding bits to encode the index value plus an offset value, where the first number is smaller than the second number, the first number and the second number are both positive integers, and the offset value is greater than or equal to the adjustment threshold value.

摘要翻译： 本发明公开了一种用于脉冲编码的方法和装置，以及用于脉冲解码的方法和装置。 脉冲编码方法包括：计算输入脉冲的指标值; 根据所述脉冲数选择调整阈值，并将所述脉冲的指标值与所述调整阈值进行比较; 如果索引值小于调整阈值，则采用第一数量的编码比特来对索引值进行编码，如果索引值不小于调整阈值，则采用第二数量的编码比特来对索引值进行编码 加上偏移值，其中第一个数字小于第二个数字，第一个数字和第二个数字都是正整数，偏移量大于或等于调整阈值。

公开(公告)号：US20120086586A1

公开(公告)日：2012-04-12

申请号：US13325993

申请日：2011-12-14

申请人： Fuwei Ma ,  Dejun Zhang ,  Minjie Xie ,  Qing Zhang

发明人： Fuwei Ma ,  Dejun Zhang ,  Minjie Xie ,  Qing Zhang

IPC分类号： H03M7/30

CPC分类号： G10L19/113 ,  G10L19/002 ,  G10L19/04 ,  G10L19/10 ,  G10L19/12 ,  G10L2019/0016 ,  H03M7/30 ,  H03M7/40 ,  H03M7/4068

摘要： The present invention discloses a method and a device for pulse encoding, and a method and a device for pulse decoding. The method for pulse encoding includes: calculating an index value of an input pulse; selecting an adjustment threshold value according to the number of pulses, and comparing the index value of the pulse with the adjustment threshold value; if the index value is smaller than the adjustment threshold value, adopting the first number of encoding bits to encode the index value, if the index value is not smaller than the adjustment threshold value, adopting the second number of encoding bits to encode the index value plus an offset value, where the first number is smaller than the second number, the first number and the second number are both positive integers, and the offset value is greater than or equal to the adjustment threshold value.

摘要翻译： 本发明公开了一种用于脉冲编码的方法和装置，以及用于脉冲解码的方法和装置。 脉冲编码方法包括：计算输入脉冲的指标值; 根据所述脉冲数选择调整阈值，并将所述脉冲的指标值与所述调整阈值进行比较; 如果索引值小于调整阈值，则采用第一数量的编码比特来对索引值进行编码，如果索引值不小于调整阈值，则采用第二数量的编码比特来对索引值进行编码 加上偏移值，其中第一个数字小于第二个数字，第一个数字和第二个数字都是正整数，偏移量大于或等于调整阈值。

公开(公告)号：US07966175B2

公开(公告)日：2011-06-21

申请号：US11550682

申请日：2006-10-18

申请人： Minjie Xie

发明人： Minjie Xie

IPC分类号： G10L19/02

CPC分类号： G10L19/038

摘要： Methods, devices, and systems for coding and decoding audio are disclosed. Digital samples of an audio signal are transformed from the time domain to the frequency domain. The resulting transform coefficients are coded with a fast lattice vector quantizer. The quantizer has a high rate quantizer and a low rate quantizer. The high rate quantizer includes a scheme to truncate the lattice. The low rate quantizer includes a table based searching method. The low rate quantizer may also include a table based indexing scheme. The high rate quantizer may further include Huffman coding for the quantization indices of transform coefficients to improve the quantizing/coding efficiency.

摘要翻译： 公开了用于编码和解码音频的方法，设备和系统。 音频信号的数字样本从时域变换到频域。 所得到的变换系数用快速格子矢量量化器进行编码。 量化器具有高速率量化器和低速率量化器。 高速率量化器包括截短晶格的方案。 低速率量化器包括基于表的搜索方法。 低速率量化器还可以包括基于表的索引方案。 高速率量化器还可以包括用于变换系数的量化索引的霍夫曼编码，以提高量化/编码效率。

公开(公告)号：US07953595B2

公开(公告)日：2011-05-31

申请号：US11550629

申请日：2006-10-18

申请人： Minjie Xie ,  Peter Chu

发明人： Minjie Xie ,  Peter Chu

IPC分类号： G10L19/00

CPC分类号： G10L19/0212 ,  G10L19/022

摘要： Methods, devices, and systems for coding and decoding audio are disclosed. At least two transforms are applied on an audio signal, each with different transform periods for better resolutions at both low and high frequencies. The transform coefficients are selected and combined such that the data rate remains similar as a single transform. The transform coefficients may be coded with a fast lattice vector quantizer. The quantizer has a high rate quantizer and a low rate quantizer. The high rate quantizer includes a scheme to truncate the lattice. The low rate quantizer includes a table based searching method. The low rate quantizer may also include a table based indexing scheme. The high rate quantizer may further include Huffman coding for the quantization indices of transform coefficients to improve the quantizing/coding efficiency.

摘要翻译： 公开了用于编码和解码音频的方法，设备和系统。 在音频信号上应用至少两个变换，每个变换具有不同的变换周期，以便在低频和高频都能获得更好的分辨率。 选择和组合变换系数，使得数据速率与单个变换保持相似。 可以用快速格子矢量量化器对变换系数进行编码。 量化器具有高速率量化器和低速率量化器。 高速率量化器包括截短晶格的方案。 低速率量化器包括基于表的搜索方法。 低速率量化器还可以包括基于表的索引方案。 高速率量化器还可以包括用于变换系数的量化索引的霍夫曼编码，以提高量化/编码效率。