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公开(公告)号:US20130325458A1
公开(公告)日:2013-12-05
申请号:US13990176
申请日:2010-11-29
申请人: Markus Buck , Timo Matheja , Achim Eichentopf
发明人: Markus Buck , Timo Matheja , Achim Eichentopf
IPC分类号: G10L21/0208
CPC分类号: G10L21/0208 , H03G3/3005 , H04R3/005 , H04R2430/01 , H04R2430/03
摘要: A system and method of signal combining that supports different speakers in a noisy environment is provided. Particularly for deviations in the noise characteristics among the channels, various embodiments ensure a smooth transition of the background noise at speaker changes. A modified noise reduction (NR) may achieve equivalent background noise characteristics for all channels by applying a dynamic, channel specific, and frequency dependent maximum attenuation. The reference characteristics for adjusting the background noise may be specified by the dominant speaker channel. In various embodiments, an automatic gain control (AGC) with a dynamic target level may ensure similar speech signal levels in all channels.
摘要翻译: 提供了在嘈杂环境中支持不同扬声器的信号组合系统和方法。 特别是对于通道之间的噪声特性的偏差,各种实施例确保扬声器变化时背景噪声的平滑过渡。 修改的噪声降低(NR)可以通过应用动态,信道特定和频率相关的最大衰减来实现所有信道的等效背景噪声特性。 用于调整背景噪声的参考特性可以由主扬声器通道指定。 在各种实施例中,具有动态目标电平的自动增益控制(AGC)可以确保所有信道中的类似语音信号电平。