公开(公告)号：US09070371B2

公开(公告)日：2015-06-30

申请号：US13656770

申请日：2012-10-22

申请人： ITTIAM SYSTEMS (P) LIMITED

发明人： Kumar Brajbhushan ,  Naveen Cherala

IPC分类号： G10L21/00 ,  G10L21/034

CPC分类号： G10L21/034

摘要： A method and system for peak limiting of speech signals for delay sensitive voice communication is disclosed. In an embodiment, a position of a sample with highest magnitude within a current block of samples is determined. Further, a peak gain to be applied for the current block of samples to bring down the highest magnitude to a predetermined threshold value is determined. Furthermore, a gain delta by which an old gain is updated to the peak gain is computed. Then, a gain factor is computed for the current block of samples based on the position of the sample with highest magnitude and the gain delta. Subsequently, the gain factor is set to a predetermined minimum gain factor when the computed gain factor is less than the predetermined minimum gain factor. In addition, gain is applied to the current block of samples using the gain factor.

摘要翻译： 公开了用于延迟敏感语音通信的语音信号的峰值限制的方法和系统。 在一个实施例中，确定当前样本块内具有最高幅度的样本的位置。 此外，确定要将当前采样块施加的峰值增益降至最大幅度至预定阈值。 此外，计算将旧增益更新为峰值增益的增益增益。 然后，基于具有最高幅度的样本的位置和增益delta计算当前样本块的增益因子。 随后，当计算的增益因子小于预定的最小增益因子时，将增益因子设置为预定的最小增益因子。 此外，使用增益因子将增益应用于当前采样块。

公开(公告)号：US20140114654A1

公开(公告)日：2014-04-24

申请号：US13656770

申请日：2012-10-22

申请人： ITTIAM SYSTEMS (P) LIMITED

发明人： KUMAR BRAJBHUSHAN ,  Naveen Cherala

IPC分类号： G10L19/14

CPC分类号： G10L21/034

摘要： A method and system for peak limiting of speech signals for delay sensitive voice communication is disclosed. In an embodiment, a position of a sample with highest magnitude within a current block of samples is determined. Further, a peak gain to be applied for the current block of samples to bring down the highest magnitude to a predetermined threshold value is determined. Furthermore, a gain delta by which an old gain is updated to the peak gain is computed. Then, a gain factor is computed for the current block of samples based on the position of the sample with highest magnitude and the gain delta. Subsequently, the gain factor is set to a predetermined minimum gain factor when the computed gain factor is less than the predetermined minimum gain factor. In addition, gain is applied to the current block of samples using the gain factor.

摘要翻译： 公开了用于延迟敏感语音通信的语音信号的峰值限制的方法和系统。 在一个实施例中，确定当前样本块内具有最高幅度的样本的位置。 此外，确定要将当前采样块施加的峰值增益降至最大幅度至预定阈值。 此外，计算将旧增益更新为峰值增益的增益增益。 然后，基于具有最高幅度的样本的位置和增益delta计算当前样本块的增益因子。 随后，当计算的增益因子小于预定的最小增益因子时，将增益因子设置为预定的最小增益因子。 此外，使用增益因子将增益应用于当前采样块。