公开(公告)号：EP1229520A2

公开(公告)日：2002-08-07

申请号：EP01000577.5

申请日：2001-10-29

Applicant: Telogy Networks Inc.

Inventor： Li, Dunling ,  Sisli, Gokhan ,  Thomas, Daniel

IPC: G10L19/00

CPC classification number: G10L19/012

Abstract: A method to reduce the amount of bandwidth used in the transmission of digitized voice packets is described. The method is used to reduce the number of transmitted packets by suspending transmission during periods of silence or when only noise is present. The system determines if a background noise update is warranted based on human auditory perception factors instead of an artificial limiter on excessive silence insertion descriptor packets. The system searches for characteristics in the perceptual changes of background noise instead of analyzing speech for improved audio compression. The invention weighs factors affecting the perception of sound including frequency masking, temporal masking, loudness perception based on tone, and auditory perception differential based on tone.

Abstract translation: 描述了减少数字化语音分组传输中使用的带宽量的方法。 该方法用于通过在静默期间或当仅存在噪声时暂停传输来减少发送分组的数量。 系统基于人类的听觉感知因素来确定是否需要背景噪声更新，而不是在过度沉默插入描述符分组上使用人造限制器。 系统搜索背景噪声的感知变化中的特征，而不是分析语音以改进音频压缩。 本发明重影影响声音感知的因素，包括频率屏蔽，时间屏蔽，基于音调的响度感知，以及基于音调的听觉感知差异。

公开(公告)号：EP1229520A3

公开(公告)日：2004-01-21

申请号：EP01000577.5

申请日：2001-10-29

Applicant: Telogy Networks Inc.

Inventor： Li, Dunling ,  Sisli, Gokhan ,  Thomas, Daniel

IPC: G10L19/00

CPC classification number: G10L19/012

Abstract: A method to reduce the amount of bandwidth used in the transmission of digitized voice packets is described. The method is used to reduce the number of transmitted packets by suspending transmission during periods of silence or when only noise is present. The system determines if a background noise update is warranted based on human auditory perception factors instead of an artificial limiter on excessive silence insertion descriptor packets. The system searches for characteristics in the perceptual changes of background noise instead of analyzing speech for improved audio compression. The invention weighs factors affecting the perception of sound including frequency masking, temporal masking, loudness perception based on tone, and auditory perception differential based on tone.